Reference🇪🇺 Payments in EuropeIntermediate⏱ 24 min read

🇹🇷 Payments in Turkey

BKM and the domestic TROY scheme, taksit installments that drive all of retail, FAST and KOLAS at the central bank, TR Karekod and the QR boom, the TCMB’s capped merchant fee schedule, the BDDK/TCMB split, and what it takes to accept payments from abroad

Who runs what: TCMB, BDDK, BKM

An extreme card-first market is one where cards are the default channel for retail spending, from small everyday purchases to durable goods. Turkey is one of them. Card payments there totaled TRY 24,062 billion in 2025 (BKM annual review, published January 16, 2026), up 51.9% year over year. At the end of December 2025, the card base stood at 142.1 million credit cards, 209.0 million debit cards, and 109.5 million prepaid cards (BKM statistics). It is served by 1,814,083 POS terminals and 56,514 ATMs. No other country in Europe matches this density of credit card acceptance.

Authority over Turkish payments is split among three institutions with distinct remits, and confusing them is the most common mistake foreign teams make. The TCMB (Türkiye Cumhuriyet Merkez Bankası, the central bank) operates the payment systems (EFT, FAST). Since January 1, 2020, it has licensed and supervised payment institutions and e-money institutions, and it caps merchant fees by regulation. The BDDK (Bankacılık Düzenleme ve Denetleme Kurumu, the banking regulator) oversees banks and enforces Law No. 5464 on bank cards and credit cards. It alone sets taksit terms. BKM (Bankalararası Kart Merkezi), founded in 1990 by 13 Turkish banks, runs interbank card processing (authorization, clearing, and settlement), plus the national products TROY, TR Karekod, KOLAS, and the open banking gateway.

SystemOperatorSinceOperational role
EFT (Elektronik Fon Transfer Sistemi)TCMB1992Lira RTGS system. TRY 932,110B processed in 2025, or TRY 3,700B a day, across just 3.6 million transactions: it has become a wholesale rail (TCMB, 2025 annual report)
FAST (Fonların Anlık ve Sürekli Transferi)TCMBDecember 2020Retail instant payments, 24/7, operated directly by the central bank. 5.4 billion transactions in 2025
KOLAS (Kolay Adresleme Sistemi)BKM2021National proxy registry: phone number, email, or ID → IBAN. 26 million unique customers as of December 31, 2025 (TCMB)
TROYBKM2016Domestic card scheme. 25.3% of card payment value at end-2025 (BKM, January 23, 2026)
TR KarekodBKM2020Single national QR standard, covering both card payments and FAST credit transfer payments
BKM ExpressBKM–Interbank wallet run by the card clearing house itself, accepting cards from major banks and e-money institutions
ÖHVPS / BKM GEÇİTBKM, regulated by the TCMB2023Mandatory open banking gateway. 16.4 million users, 12.3 million transactions a day, 53 participants (TCMB, March 17, 2026)
Turkish payment rails and their operators
TRY 24,062B
card payments in 2025, up 51.9% year over year
BKM annual review, January 2026
460M
cards in circulation at end-2025 (credit + debit + prepaid)
BKM card statistics, December 2025
1 814 083
POS terminals installed in Turkey as of December 2025
BKM
68 %
contactless share of card transactions in 2025, or 7.96 billion transactions
BKM, January 2026
🔑
The central bank controls the interbank card center
BKM describes itself as a company in which the TCMB is the controlling shareholder (BKM corporate website, accessed 2026). No major European market has a comparable setup: there, the card clearing house belongs to the banks or to a private operator. TROY, TR Karekod, and KOLAS are therefore public policy instruments, not industry initiatives. They spread through regulation and public procurement, not through voluntary adoption by banks and merchants. A foreign company that evaluates them as commercial options, to adopt or skip on their merits, misreads what they are.
⚠️
The BDDK/TCMB jurisdiction mistake
Plenty of English-language documentation, including material from reputable firms, still says payment institutions are licensed by the BDDK. That has been wrong since January 1, 2020. The TCMB licenses and supervises payment institutions and e-money institutions, and it publishes the registers. The BDDK still has jurisdiction over banks and over Law No. 5464 on cards, and therefore over taksit, card issuing, and bank acquiring. A license application filed with the BDDK will not be reviewed, because that regulator has no jurisdiction over the activity. The applicant has to start over with the TCMB, and the license is delayed by months.

Taksit: the mechanism that drives Turkish retail

Taksit is a credit card installment payment chosen at the point of sale, on the terminal or in the online checkout flow. It is a built-in option of the card payment flow: the authorization message carries it, and the merchant decides whether to offer it and pays for it. It differs from point-of-sale consumer loans, which require a separate application; from BNPL, which brings in a third-party lender; and from installment plans an issuer offers after the purchase. No other feature sets the Turkish market apart as sharply. For foreign providers, the difficulty lies in where it sits in the chain. The number of installments must be known at authorization, carried in the message, and picked up again at settlement.

BKM’s annual statistics show taksit’s share of card spending. Of the TRY 20,425 billion spent on credit cards in 2025, TRY 3,991 billion, or 19.5%, went through taksit, versus TRY 16,433 billion paid in a single payment (BKM, January 2026). The share is much higher online. Card e-commerce totaled TRY 6,706 billion, equal to 32.8% of credit card spending, and 34.4% of that was paid in installments. In other words, a third of Turkish card e-commerce runs through taksit.

How a taksit payment flows
Merchant
Declares, by card and by bank, which installment plans it accepts
The number of installments offered varies: it depends on the merchant agreement, the issuing bank, the current promotion, and the merchant category (MCC), which is itself restricted by the BDDK
Cardholder
Chooses the number of installments at checkout
On the terminal, the screen shows the plans available for *this* card; online, the plan grid appears once the BIN is recognized, before authentication starts
Acquirer
Sends the number of installments in the authorization request
The installment plan is part of the authorization data, not post-processing. A PSP whose data model lacks this field cannot accept taksit payments, however good it is otherwise
Issuer
Holds the full amount against the card’s credit limit
The full amount is charged immediately against the cardholder’s approved credit line, even though repayment is spread out, which triggers over-limit declines on otherwise modest purchases
Acquiring bank
Pays the merchant on the agreed schedule
A major negotiating point: depending on the contract, the merchant is paid installment by installment over the months, or upfront for a higher fee. With inflation this high, that choice matters more than the headline rate
Cardholder
Is billed monthly on successive statements
Each installment appears on a separate statement; the cardholder sees a monthly price, not a total price, and that is exactly what the merchant is paying for
  • “Peşin fiyatına taksit”, literally “taksit at the cash price”: the customer pays in N installments at no extra charge, and the merchant absorbs the entire cost. This is standard practice in Turkish retail, not an occasional promotion.
  • “Vade farkı”, the surcharge for deferred payment, applied when the merchant won’t absorb the cost and passes it on in the installment price.
  • “Ek taksit”, extra installments offered in bank promotions beyond the standard plan, funded by the bank, the merchant, or both.
  • “Taksit erteleme”, deferral of the first installment, widely used at year-end and during major retail events.
  • The number of installments is a conversion lever, not a convenience. In a market where real incomes erode every month, customers compare monthly payments. A checkout that shows only a total price loses out to a competitor that displays “12 × X TRY.”
⚠️
A checkout without taksit isn’t a degraded checkout; it is out of the market
A checkout flow built outside Turkey and deployed as is, perhaps with an in-house BNPL bolted on, offers no installment plan. Conversion then drops on mid- and high-ticket purchases. Taksit is how the country finances durable-goods consumption, and it is built into the act of paying. On appliances, furniture, or event tickets, a checkout without installments pits a lump-sum price against the monthly payments every competing merchant displays. The customer compares a total with a monthly payment one-twelfth its size, and the offer without installments looks like the most expensive one.
ℹ️
What taksit is not
Taksit is not BNPL. There is no separate application, no third-party credit scoring, and no new credit agreement per purchase. The cardholder draws on a credit card limit already granted by their bank, within a credit line underwritten in advance. Credit risk stays with the issuer, the financing cost falls on the merchant, and the regulator steers the whole system through the number of installments it allows. Categories imported from Western Europe (“split payments,” “revolving credit,” “BNPL”) therefore describe it poorly: its term is set by the regulator and its financing cost is borne by the merchant.

Taksit is an economic policy lever, and it keeps moving

A macroprudential instrument is a regulatory tool an authority uses to influence the volume and direction of credit. It targets systemic risk, not the risk of a single institution. In Turkey, the maximum number of installments is a macroprudential instrument, on a par with a policy rate or a capital ratio. Its legal basis rests on two texts: Law No. 5464 on bank cards and credit cards (published in Turkey’s official gazette, the Resmî Gazete, on March 1, 2006, No. 26095) and its implementing regulation, the Banka Kartları ve Kredi Kartları Hakkında Yönetmelik. Article 26 of that regulation does not set the terms itself. It provides that installment terms are set by decision of the BDDK board, after consultation with the Ministry of Treasury and Finance and the Ministry of Trade.

This delegation explains how fast the rule changes. Without amending the law, the regulator can tighten or loosen spending on a category of goods within days by publishing a decision in the Resmî Gazete. When domestic demand heats up or the current account deficit widens, terms get shorter; when a sector needs support, they get longer. The 2026 amendment is a case in point: it extended the allowed installment term on appliances, furniture, and school fees from 9 to 12 months.

  • Categories barred from taksit fall under the same framework and have been stable since the 2014 wave of restrictions: telecommunications, food and groceries, fuel, cosmetics, alcoholic beverages, office supplies, gift cards and vouchers not tied to a specific good or service, direct sales, jewelry in bullion form, and spending abroad.
  • Corporate credit cards (kurumsal kredi kartı) are capped by the regulation at 9 months of installments, with the exception raised to 12 months for appliances, furniture, and school fees.
  • Amount thresholds add a second layer: above a given sale price, some categories drop from a long plan to a short one, so the rule depends on the transaction amount, not just the MCC.
  • The MCC determines eligibility. A miscategorized merchant will be denied plans it is entitled to, or will offer plans it has no right to grant, which exposes its acquirer.
March 1, 2006
Law No. 5464 on cards
Published in Resmî Gazete No. 26095, this law still governs card issuing, acquiring, and taksit today. The BDDK enforces it.
February 2014
The big wave of sector bans
Taksit is banned for telecommunications, food, groceries, fuel, and jewelry. The measure targets the current account deficit, not consumer protection.
January 11, 2019
Broader power to set installment terms
An amendment to the regulation (Resmî Gazete No. 30652) broadens the BDDK board’s power to set installment terms.
March 28, 2020
Minimum payments and installment plans adjusted
A further amendment (Resmî Gazete No. 31082) changes minimum repayment amounts and installment rules.
2026
Back to 12 months for three categories
The allowed installment term on appliances, furniture, and school fees rises from 9 to 12 months, including on corporate cards.
⚠️
Never hardcode the taksit grid
The most common and most expensive architecture mistake in this market is hardcoding the sector grid in application code. The grid can be changed by administrative decision, with almost immediate effect, and it has reversed direction several times in a decade. Standard practice is to keep it in a versioned, dated configuration table, reconciled regularly against the official “Kredi Kartı Taksit Sınırları ve Yasakları” list published by the BDDK. Getting it wrong leads to two mirror-image failures. A plan that has become illegal but is still offered exposes the acquirer that accepts it. A relaxation that isn’t picked up hands the resulting conversion, for several weeks, to acquirers that have already implemented it.

What acceptance costs: fees capped by the central bank

The merchant discount rate (MDR) is the fee the acquiring bank keeps on each card payment. It is expressed as a percentage of the sale and, in most markets, is set solely by contract between acquirer and merchant. Turkey departs from that model: the central bank regulates the MDR. Each month, the TCMB publishes a document titled “Üye İşyerlerine Uygulanacak Azami Komisyon Oranları” (maximum commission rates for merchants). It sets the maximum rates for card payments. These caps are indexed to a reference rate calculated using the method in Communiqué No. 2020/4 on fees chargeable to business customers. Banks remain free to charge less: “bankalar bu oranları aşmamak üzere… serbestçe belirleyebilecektir” (banks may set them freely, provided they do not exceed these rates).

ItemLimitReach
Monthly reference rate3,11 %Calculation base, published monthly; unchanged since the period starting November 1, 2023
Annual compound reference rate45,15 %The same reference rate, annualized
Credit card, single payment (taksitsiz)3,56 %Maximum rate for a payment without installments
Credit card, per additional installment+1,780 %Maximum add-on per installment beyond a single payment
Debit card issued in Turkey1,04 %In effect since November 1, 2025; also applies to prepaid cards and account-to-account merchant payments
Foreign-issued card1,90 %Single cap, regardless of card scheme
Merchant fee caps, August 1–31, 2026 (TCMB)
Calculating the fee cap on a taksit payment (TCMB schedule, August 2026)
cap(N) = 3.56%  +  (N - 1) x 1.780%       N = number of installments

  N = 1  (no taksit)    ->   3.56%
  N = 3                 ->   3.56 + 2 x 1.780  =   7.12%
  N = 6                 ->   3.56 + 5 x 1.780  =  12.46%
  N = 9                 ->   3.56 + 8 x 1.780  =  17.80%
  N = 12                ->   3.56 + 11 x 1.780 =  23.14%

Domestic debit card .......................  1.04%  (fixed cap)
Foreign-issued card .......................  1.90%  (fixed cap)

BSMV (banking transaction tax) ............  added on top of the fee;
                                             it is NOT included in
                                             the caps above.

Example: 12 installments at the cap, 5% BSMV on the fee
         23.14% x 1.05 = 24.30% of the amount collected.
🔑
Taksit that’s free for the customer is never free for the merchant
The formula above puts a number on “peşin fiyatına taksit.” When the customer gets 12 installments at no extra cost, the bank can keep up to 23.14% of the sale price at the regulatory cap, before BSMV. Negotiated rates are lower, often much lower for high volumes, but the order of magnitude is in a different league from a European card fee. Margin modeling in Turkey therefore starts from the installment mix, not from an average fee rate. Each additional installment raises the applicable cap, so the number of installments sold drives acceptance costs far more than the scheme or card type does.
ℹ️
Three contract points to watch
(1) BSMV, the tax on banking and insurance transactions, comes on top of the fee. The TCMB states explicitly that its caps exclude tax. (2) The reference rate can be revised every month. A contract that locks in a fixed percentage stops matching the cap in force as soon as the reference rate changes, in either direction, while a clause indexed to that rate tracks it. (3) The settlement schedule matters as much as the rate. Being paid installment by installment over 12 months, in an economy with double-digit inflation, turns a nominal fee into a far higher real cost. In a Turkish acquiring negotiation, the value date comes before the rate.

Two gaps between caps directly affect acceptance margins. Domestic debit cards, capped at 1.04%, cost nearly three and a half times less than a single-payment credit card transaction. A merchant whose checkout steers customers who don’t need installments toward debit cuts its acceptance costs accordingly. Foreign-issued cards are capped at 1.90%. That cap limits the cost of inbound payments, and therefore the cost for Turkish merchants that depend on tourism and for acquiring offers built around those flows.

FAST: instant payments run by the central bank

FAST (Fonların Anlık ve Sürekli Transferi) is Turkey’s instant payment rail. It went live on December 18, 2020 and opened to customers on January 8, 2021. The TCMB operates it directly, as it does EFT. No bank consortium or private infrastructure is involved in running it. Its growth ranks among the fastest seen on any instant payment rail worldwide, and it has reshuffled the roles of Turkey’s two credit transfer systems. Retail payments have moved to FAST, while EFT now handles large-value payments, treasury, and interbank transfers.

5.4B
FAST transactions in 2025, totaling TRY 43,230 billion
TCMB, 2025 annual report
49
FAST participants as of December 31, 2025, up from 42 a year earlier
TCMB, 2025 annual report
28.7M
transactions on September 15, 2025 alone, an all-time high
TCMB, 2025 annual report
26M
unique customers registered in the KOLAS proxy registry as of December 31, 2025
TCMB, 2025 annual report
CriterionEFTFAST
Launched1992December 2020
AvailabilityInterbank business hours24/7
Volume, 2025TRY 932,110B across 3.6 million transactionsTRY 43,230B across 5.4 billion transactions
Daily average, 2025TRY 3,700B, ~14,600 messages~15 million transactions
Participants6949, including nonbanks
AddressingIBANIBAN or KOLAS alias (phone, email, ID)
Main useLarge-value payments, treasury, interbankRetail, P2P, merchant payments
EFT and FAST: two rails, two uses
🔑
Nonbanks connect directly, a rare opening
Payment institutions and e-money institutions licensed by the TCMB connect to FAST directly, with no sponsor bank. That is why a wallet such as Papara or Paycell can offer its customers end-to-end instant transfers and a KOLAS address, just like a bank. For a foreign provider, this shapes the access model: a local license gives direct access to the national rail, with no dependence on a sponsor bank. The reverse also holds. A nonbank provider can reach FAST only once licensed, and no contractual arrangement substitutes for the license.
  • Per-transaction limit: TRY 100,000, raised by the TCMB in April 2024. There is no system-wide cumulative daily limit: each bank sets its own, so the customer experience varies from one institution to the next.
  • TRY 250,000 for merchant payments made via FAST-TR Karekod with dynamic authentication, since April 4, 2024, a limit designed specifically for merchant acceptance.
  • Ödeme İste (“request a payment”), FAST’s request-to-pay layer, launched on January 18, 2025. Initially aimed at person-to-person payments, it was extended in its second version to merchant payments and e-commerce, with partial payment, early payment, and due-date deferral (TCMB, 2025 annual report).
  • Mandatory open banking: payment data-sharing services (ÖHVPS) must go through the BKM GEÇİT gateway. Version 2.0.0, announced by the TCMB on March 17, 2026, extends account information to card data and card transactions and adds initiation of future-dated and recurring payments. At that point the ecosystem had 16.4 million users, 12.3 million daily transactions, and 53 participants.
ℹ️
One mandated API
Under the EU’s PSD2, each bank publishes its own interfaces, and an aggregator has to integrate with every institution it wants to reach. Turkey made it mandatory to go through a single central gateway operated by BKM. Integration costs for an aggregator or a payment initiation provider are therefore structurally lower: one integration reaches every participant, with no bank-by-bank connections. This centralization reflects the logic of the whole market: one mandated national infrastructure rather than N competing implementations.

TR Karekod: the national QR standard and its adoption curve

TR Karekod is Turkey’s national QR standard, defined by BKM and rolled out from 2020. What sets it apart is its dual nature: the same code can trigger a card payment or a FAST credit transfer. In other markets, several proprietary wallet QR codes coexist without interoperability, so merchants have to display one code per accepted wallet. Turkey mandated a single format, interoperable across banks and rails and operated by the interbank card center itself.

PeriodQR (transactions)QR (value)Mobile contactless (transactions)Mobile contactless (value)
2024 (full year)131 465 027TRY 81,570M62 189 846TRY 21,142M
2025 (full year)601 113 823TRY 387,651M65 882 144TRY 31,077M
H1 2026532 489 962TRY 430,646M35 883 386TRY 20,533M
QR code (karekod) payments and mobile contactless payments in Turkey

The table tracks the two mobile initiation methods. The number of QR transactions more than quadrupled between 2024 and 2025, and H1 2026 alone already exceeds all of 2025 by value. Over the same period, mobile contactless payments, which BKM reports separately, plateaued and then declined. In Turkey, QR is an extra initiation layer on top of an already dense acceptance network. With 1.8 million POS terminals in the country, it does not play the catch-up role it plays in markets short on terminals.

90 %
of POS terminals in Turkey support card payments via TR Karekod
TCMB, 2025 annual report
> 41 %
of POS terminals also accept FAST TR Karekod credit transfer payments
TCMB, 2025 annual report
4.6×
growth in QR transaction count, 2024 to 2025
Calculated from BKM statistics
TRY 250,000
limit per FAST-TR Karekod merchant payment with dynamic authentication, since April 4, 2024
TCMB
🔑
Turkish QR is not a wallet but a layer
In China and Southeast Asia, QR payments run through a dominant app with a household-name brand. No app plays that role in Turkey. TR Karekod is a format, not a consumer brand. Banking apps, e-money wallets, and BKM Express all read it. To accept Turkish QR payments, a merchant implements a standard rather than signing a commercial agreement with a wallet provider. Competitors differ on the underlying rail they choose (card or FAST), and therefore on cost, not on compatibility.
🏦
BKM Express
An interbank wallet operated by BKM. Cardholders register their cards once and pay online or in store, with person-to-person transfers. BKM Express accepts cards from the major Turkish banks and from e-money institutions. A wallet run by the card clearing house itself remains extremely rare.
💳
Papara
Turkey’s largest e-money wallet by number of accounts, with about 22 million users, by its own count (Papara, as reported in the Turkish press, 2025). Personal account number, prepaid card, free transfers between members, bill payments. A mass-market substitute for a bank account.
📱
Paycell
A wallet backed by mobile operator Turkcell (Turkcell Ödeme ve Elektronik Para Hizmetleri A.Ş., licensed by the TCMB), launched in 2017: payments charged to the phone bill, prepaid card, merchant acceptance. Turkish-style mobile money, run by a telecom company but under a central bank e-money license.
🅰️
Tosla
The Akbank group’s e-money arm (Aköde), launched in 2019, with more than 5 million users claimed (2024). It illustrates the Turkish model in which banks set up their own e-money institutions rather than cede the field to independent fintechs.

TROY: Europe’s fastest-growing domestic scheme

TROY is Turkey’s domestic card scheme, launched by BKM in 2016. For its first few years, it remained a modest sovereignty project, limited to a handful of state-owned issuers. That changed in 2024. Its growth since then is the fastest seen for any domestic scheme in Europe, and it changes the business conditions for every acquirer operating in the country.

90M
TROY-branded cards at end-2025, up 80% year over year (50 million at end-2024)
BKM press release, January 23, 2026
TRY 4,800B
volume processed by TROY in 2025, up 125%
BKM press release, January 23, 2026
25,3 %
market share BY VALUE at end-2025, up from 18.3% at end-2024
BKM press releases, January 2025 and January 2026
30 %
market share target announced by BKM
BKM

About 25 of every 100 lira paid by card in Turkey now go through TROY. This growth stems from a public policy of replacing the international schemes, backed by a mandate on the public sector and by issuance at the big banks. It does not reflect cardholder preference. The momentum is managed from the top: sustaining it depends on public procurement and issuing mandates, not on changing payment habits.

  • International acceptance through reciprocity agreements. TROY has not built a global network. It relies on agreements with Discover Financial Services, including Diners Club and PULSE, and on a mutual recognition agreement signed with China UnionPay in November 2025. A card works abroad only if the relevant logo actually appears on it, which is not true of every TROY card.
  • Co-badging is the norm, not the exception. A large share of cards carry TROY alongside an international brand, which shifts the question from scheme choice to routing: which brand is used at authorization, under what rule, and with what effect on acceptance costs.
  • An acquirer that doesn’t accept TROY turns away a quarter of the market by value. This is no longer an optional coverage extension; it is a prerequisite for doing business. Any go-to-market roadmap for Turkey must put TROY certification on par with Visa and Mastercard, not in a later phase.
  • Foreign-issued cards are capped at a 1.90% fee by the TCMB, across all schemes. The cost gap between the international brands and TROY therefore plays out in domestic issuing, not in inbound payments.
⚠️
Don’t treat TROY as a second-tier scheme
TROY is sometimes lumped in with residual domestic schemes, alongside old European national networks that are being phased out, and its certification gets pushed to a later phase. BKM’s figures contradict that view: 80% more cards and 125% more volume in one year. Its market share by value rose from 18.3% to 25.3% in 12 months, against a public target of 30%. An acquirer that enters the market without TROY forgoes a quarter of card payment value, and no pricing discount wins that share back. A transaction presented on a brand the acquirer doesn’t accept is declined before cost even enters the picture.

Inflation, credit, and risk: reading a Turkish P&L

Turkey’s monetary regime combines double-digit inflation with a high policy rate, and both drive the economics of acceptance. Annual consumer price inflation was 30.89% in December 2025, with prices up 0.89% on the month. The 12-month average was 34.88% (TÜİK, Turkey’s statistics office, January 5, 2026). The TCMB kept its policy rate (the one-week repo rate) at 37% at its Monetary Policy Committee meeting on July 23, 2026. The overnight lending rate stood at 40% and the overnight borrowing rate at 35.5%.

30,89 %
annual inflation in December 2025 (34.88% 12-month average)
TÜİK, January 5, 2026
37 %
policy rate (one-week repo) held on July 23, 2026
TCMB, Monetary Policy Committee
3.11%/month
reference rate used as the base for fee caps and card interest rate caps, or 45.15% compounded annually
TCMB, August 2026 schedule
+51,9 %
nominal growth in card payments in 2025, versus inflation of 30.89%
BKM / TÜİK
🔑
Deflate any Turkish nominal growth figure before reading it
Payment volume up 51.9% in an economy where prices rose 30.89% means real growth of about 16%. That is still remarkable, but it is not what the headline number suggests. The same adjustment applies to sales targets, multi-year plans, and volume clauses. A three-year contract denominated in TRY with no indexation mechanism loses real value at the rate of inflation, at the creditor’s expense. The first thing to check in a Turkish acquiring agreement is whether it includes indexation, and on what formula.

Inflation also explains why taksit looms so large. For a cardholder, spreading a purchase over 12 months in an economy with 30% inflation means repaying in devalued currency a price locked in today. With no surcharge, taksit becomes credit at a negative real rate. The merchant bears the other side. It finances that credit either through a higher fee or by waiting 12 months to be paid in full, and at this level of inflation the second option costs even more. The Turkish merchant’s key trade-off is the value date, not the fee rate.

  • The settlement schedule outweighs the rate. Between a higher fee with immediate settlement and a low fee with settlement spread over the installment plan, the math almost always favors getting paid fast. Model it explicitly, with the inflation rate as an input.
  • Merchant cash flow is structurally tight. A payments company that provides financing (merchant cash advances, discounting of future installments) offers Turkish merchants far more value than a few basis points off the fee.
  • The card limit is the real constraint on conversion. Because taksit immediately ties up the full amount against the approved credit line, over-limit declines hit purchases that would look unremarkable elsewhere. This shows up in response codes, provided you collect the raw codes.
  • The prepaid card base is shrinking: from 109.5 million in December 2025 to 99.7 million in June 2026 (BKM), while credit and debit cards keep growing. The decline coincides with the TCMB’s cleanup of the e-money institution register.
ℹ️
The reference rate is the regulatory benchmark to watch
The monthly reference rate of 3.11% published by the TCMB (45.15% compounded annually) anchors the entire cap system. It is used to calculate both the maximum interest rates on credit cards and the maximum merchant fees. Changes in acceptance costs therefore show up in this rate, not in the policy rate, which is a separate benchmark. It held steady at this level throughout the period from November 2023 to August 2026.

Accepting payments from abroad: licensing, currency, and what breaks

Accepting payments from abroad means a merchant or provider based outside Turkey accepting payments from Turkish customers. The target market is large and growing fast. Turkish e-commerce reached TRY 4,567 billion in 2025, up 52.2%, across 5.94 billion transactions. That is $115.43 billion, 6.9% of GDP, and 19.3% of all commerce (Ministry of Trade, ETBİS report presentation, May 2026). Online retail accounts for TRY 2,460 billion of that, up 51.8%. But access to this market requires a local license, and there is no practical way around it.

The regime for nonbank providers is set out in Law No. 6493 of 2013 on payment and securities settlement systems, payment services, and e-money institutions. Since January 1, 2020, the TCMB has handled licensing and supervision and publishes the registers. They listed 20 licensed payment institutions and 55 licensed e-money institutions, against 14 revoked e-money licenses and 10 revoked payment institution licenses (TCMB public registers, accessed September 2026). The revocations hit established companies. ininal, a pioneer of Turkish prepaid cards, is among them: its revocation was reported at the end of 2025, along with those of PayFix and Aypara.

RouteWhat it requiresWhat it enablesFriction point
Licensed Turkish PSP (iyzico, PayTR, Param…)A local merchant agreement; the PSP holds the licenseFast time to market, managed taksit grid, TROY acceptance, TR Karekod, walletsThe merchant depends on its PSP’s taksit configuration and settlement schedule
Direct relationship with a Turkish acquiring bankTurkish entity, merchant agreement, often a security depositDirect negotiation of fees and, above all, the settlement scheduleOne relationship per bank, so N integrations and N taksit grids to maintain
Own TCMB license (payment institution or e-money institution)Company under Turkish law, capital, governance, compliance framework, TCMB reviewDirect FAST participation, KOLAS address, BKM GEÇİT accessLengthy review, ongoing requirements, real revocations (11 so far)
Marketplace collecting payments for third partiesMust use a licensed institution to collect funds on behalf of third partiesCommon, well-established model in this marketCollecting funds for third parties is a regulated activity; doing it without a license is not a contractual detail
Four ways into the Turkish market, and what each involves
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Contracts between residents must be in Turkish lira
Article 4/g of Decree No. 32 on the Protection of the Value of the Turkish Currency covers persons resident in Turkey. Except in cases defined by the ministry, it bars them from agreeing among themselves on prices or payment obligations in foreign currency or indexed to a foreign currency. The rule covers sales of movable and immovable property, leases, financial leasing, and employment, service, and construction contracts. A transitional provision even required existing contracts to be converted into TRY. By default, then, the Turkish subsidiary of a foreign group cannot bill a Turkish customer in euros or dollars. Before signing, check the pricing structure, the merchant agreement, and any local service agreement against this decree and its exceptions.
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Crypto-assets are banned as a payment method
The regulation titled Ödemelerde Kripto Varlıkların Kullanılmamasına Dair Yönetmelik was published in the Resmî Gazete on April 16, 2021 (No. 31456) and took effect on April 30, 2021. It bans the use of crypto-assets in payments, as well as business models that would use them to provide payment services or issue e-money. It also bars payment institutions and e-money institutions from intermediating fund transfers to or from crypto-asset platforms. Holding crypto-assets as an investment remains legal; accepting payment in stablecoins does not. Widespread use of the dollar as a substitute currency keeps demand for this kind of settlement alive. The line is regularly tested, but it has not moved.
  • The PSP landscape is concentrated and local. iyzico, founded in Istanbul in 2013, was acquired by PayU (part of Naspers/Prosus) for $165 million in a deal announced in June 2019 and closed in December 2019. PayTR and Param round out the trio of domestic infrastructure providers. None of them is interchangeable with a Western PSP: their value lies precisely in managing the taksit grid, bank promotions, and settlement schedules.
  • Verify the license before signing. The TCMB publishes its registers, including the list of revoked licenses. Contracting with an institution whose license has been revoked puts collected funds directly at risk. Repeat the check periodically, not just once at onboarding.
  • Require raw response codes. In a market where taksit maxes out card limits, the breakdown of declines into over-limit, issuer, and technical declines drives the retry strategy. PSPs’ aggregated labels are not enough.
  • Plan TROY certification from phase one, on par with Visa and Mastercard, not as a later coverage extension.
  • Treat taksit configuration as live data, aligned with the BDDK’s official list, versioned and with effective dates, since administrative decisions take effect when published in the Resmî Gazete.
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Key takeaways for practitioners
Turkey is an integrated, state-managed system: the central bank controls the interbank card center, operates the instant payment rail, caps merchant fees, and mandates the open banking gateway, while the banking regulator steers consumption through the number of installments it allows. This is not a European card market with a few local quirks, because Turkey’s specificities stem from a single overarching public policy. A setup designed elsewhere and ported without adaptation therefore hits regulatory obstacles before commercial ones. Entering this market means accepting TROY, mastering the taksit grid, negotiating the value date before the rate, and obtaining, or renting, the license that gives access to the national rails.