Accepting payments in China. 6 chapters and a final quiz.

Chapter 1. Choosing the collection route.

The provider doesn’t come first. Neither does the API. The first decision in a China project is the customs and legal route the sale will take. Everything else follows from it: who can collect the payment, which taxes apply, which limits constrain your customer, and which data has to go to customs. A team that picks its PSP before settling this question ends up rebuilding the entire project three months later.

The cross-border retail regime rests on two texts. Know them by number, and cite them to any partner who tells you otherwise. Notice 财关税〔2016〕18号, in force since April 8, 2016, sets the tax treatment: customs duty provisionally at 0%, no more de minimis threshold, and import VAT and consumption tax collected at 70% of the amount legally due. It defines the customs value as the actual transaction price, freight and insurance included, in the words “实际交易价格（包括货物零售价格、运费和保险费）.” Notice 财关税〔2018〕49号 has applied since January 1, 2019. It raised the limits from RMB 2,000 to RMB 5,000 per transaction and from RMB 20,000 to RMB 26,000 per person per year.

Chapter 2. Choosing a cross-border acquirer.

There is no merchant self-onboarding from abroad, and that is the project’s first surprise. You don’t open an Alipay account the way you open a Stripe account. You contract with a licensed institution, or with an intermediary that relies on one. China’s cross-border acquiring market has four types of players, and they don’t serve the same needs.

Due diligence in five checks, with the legal basis for each

• The payment license. Ask for the payment institution license number issued by the PBoC, and check that the authorized scope explicitly covers online payments. An intermediary that pays you out of its own bank account is not an acquirer: it is a frozen-funds risk.
• The foreign exchange registration. Article 3 of the 《支付机构外汇业务管理办法》, SAFE circular 汇发〔2019〕13号 of April 29, 2019, requires the institution to complete 名录登记 with the local SAFE branch: registration in the directory of companies with foreign currency receipts and payments from trade. Without that registration, no cross-border flow can be settled legally.
• The authorized scope. Article 2 of the same text limits the activity to “small-value, fast, and convenient electronic payment services for current account transactions,” including buying and selling foreign currency on the client’s behalf. Your flows must fit that definition. A large B2B subscription or a financial service doesn’t necessarily fit.
• The per-transaction cap. Article 24 states that a transaction should not, in principle, exceed the equivalent of $50,000. Above that, the institution must apply to amend its registration. If your average order value comes anywhere near that figure, it belongs in a contract clause, not a footnote.
• The aggregator’s registration. Outsourced acquiring service providers (收单外包服务机构) must be listed in the register kept by the Payment & Clearing Association of China (中国支付清算协会). The check takes thirty seconds and weeds out most dubious players.

Chapter 3. Connecting Alipay and WeChat Pay: channel, identifiers, units.

In China, the channel you choose determines the entity requirements, not the other way around. You don’t decide to “go with a mini-program” and then discover you need a Chinese company. You first look at what you can open, then design the customer journey. Here is the grid, product by product, with what each option really implies.

The identifiers to obtain, in order

• The merchant account and its ID at the operator (the mchid for WeChat Pay). If you go through a provider, you will probably be a sub-merchant under its account. Check who holds the account, because the account holder owns the history.
• The channel’s app ID (the appid of a mini-program, official account, or app). A merchant has one appid per channel, and each one must be linked to the merchant account before the first call. Forgetting this is the classic day-one testing mistake.
• The merchant certificate and its private key, plus the symmetric APIv3 key. Without them, you can’t sign requests or decrypt notifications.
• The user ID within the channel (openid in a mini-program or official account). In-app payment won’t trigger without it, and you get it at authentication, not at payment.
• The declared URLs: payment domain, return URL, notification URL. Any undeclared URL will make the call fail in production, even if it worked in testing.

POST /v3/pay/transactions/jsapi HTTP/1.1
Host: api.mch.weixin.qq.com
Content-Type: application/json
Accept: application/json
Authorization: WECHATPAY2-SHA256-RSA2048 mchid="...",nonce_str="...",
               signature="...",timestamp="...",serial_no="..."

{
  "appid": "wx...",              // channel, NOT the merchant account
  "mchid": "16...",              // merchant account
  "description": "Commande 20260801-0042",
  "out_trade_no": "20260801-0042",   // YOUR reference, unique and safe to replay
  "notify_url": "https://.../wechat/notify",
  "amount": { "total": 30000, "currency": "CNY" },   // 30000 FEN = RMB 300.00
  "payer": { "openid": "o..." }      // user ID WITHIN the channel
}

THREE TRAPS IN THESE TEN LINES
  1. amount.total is in FEN (hundredths of a yuan). Alipay works in
     decimal yuan. A gateway serving both without explicit conversion
     is off by a factor of 100, in one direction or the other.
  2. out_trade_no is the ONLY key you control. It must be idempotent:
     replaying the same reference must never create a second payment,
     and it is the key reconciliation will run on.
  3. Notifications are encrypted with AES-256-GCM using the APIv3 key.
     An endpoint that returns 200 without decrypting the payload and
     verifying the signature accepts any POST from the internet.

The mini-program: best conversion, highest barrier to entry

The mini-program is the best-performing channel on the market because the user never leaves the app. No browser redirect, no failed return, and the user ID is already there. Its barrier is administrative, not technical. Since MIIT notification 工信部信管〔2023〕105号 of July 21, 2023, every mini-program distributed in China must be registered (备案), just like mobile apps. Apps already in service had to complete registration by March 2024. The telecom authorities ran checks from April to June 2024 and can penalize unregistered apps.

Chapter 4. Cards, UnionPay, and the anatomy of a rejection.

Three distinct questions routinely get lumped together under the word “card.” The first is issuing an RMB card under the merchant’s brand. The second is a foreign visitor paying with a foreign card at a merchant based in China. The third is a Chinese customer paying with a Chinese card on a foreign website. The answers involve different players and different obstacles.

Anatomy of a rejection: the six documented causes

• The order exceeds RMB 5,000. Above the per-transaction limit, the cross-border retail regime no longer applies on its normal terms. Notice 财关税〔2018〕49号 provides for full-rate taxation of a single item that exceeds the limit, within the annual quota. The fix: know this before checkout, and tell the customer.
• The RMB 26,000 annual quota is used up. The quota belongs to the person, not to your store: your customer may have used it elsewhere, and you have no visibility into that. The fix: an explicit failure message and a fallback to the general regime.
• The payer isn’t the buyer. Announcement 海关总署公告2018年第194号 requires verification that the consumer’s identity is genuine. Absent authentication by an authorized body, “订购人与支付人应当为同一人” (the buyer and the payer must be the same person). A payment made by a spouse blocks customs clearance.
• The product isn’t on the positive list. Outside the 《跨境电子商务零售进口商品清单》, the cross-border retail regime is closed, whatever the payment method.
• The amount exceeds the payment institution’s cap. Article 24 of 汇发〔2019〕13号 sets a default cap equivalent to $50,000 per transaction; above it, the institution must have amended its registration.
• The three flows don’t match. The order, payment record, and waybill must be transmitted in real time and must reconcile. Any mismatch in amount, name, or reference among the three holds the goods at customs, even if the payment went through.

Chapter 5. Calculating the full cost of an order.

China has a feature that is rare for anyone coming from a market with negotiated interchange: half the cost of a card payment is set by the state, so it can be calculated in advance and is the same for everyone. Joint notice 发改价格〔2016〕557号 from the National Development and Reform Commission (NDRC) and the PBoC, in force since September 6, 2016, caps the issuing fee and the network fee, and leaves only the acquiring fee to the market. You don’t negotiate interchange in China. You calculate the base, then negotiate the one open line.

ORDER — 跨境电子商务零售进口 REGIME
  Retail price of the goods ..........................  2,800.00 RMB
  International freight ..............................    150.00 RMB
  Insurance ..........................................     50.00 RMB
  --------------------------------------------------------------
  Customs value (完税价格, cai guan shui 2016/18) ..  3,000.00 RMB
     -> 3,000 < 5,000: per-transaction limit met
     -> customer's annual quota: 3,000 / 26,000 RMB used

  Customs duty              0%        x 3,000.00 .....      0.00 RMB
  Import VAT  13% x 70% = 9.1%        x 3,000.00 .....    273.00 RMB
  Consumption tax           n/a ......................      0.00 RMB
  --------------------------------------------------------------
  TAXES DUE ..........................................    273.00 RMB
  Taxpayer: the CUSTOMER (an individual).
  Collector: the e-commerce company, the platform, or the logistics provider.

THE SAME ORDER UNDER THE GENERAL IMPORT REGIME
  Full 13% import VAT                 x 3,000.00 .....    390.00 RMB
  + customs duty per tariff heading ..................       n/a
  --------------------------------------------------------------
  MINIMUM SAVING UNDER CROSS-BORDER RETAIL ...........    117.00 RMB

SOURCES
  0% duty, 70% of VAT/consumption tax : 财关税〔2016〕18号, 2016-04-08
  RMB 5,000 / 26,000 limits          : 财关税〔2018〕49号, 2019-01-01
  standard VAT rate of 13%           : MoF/SAT/GACC announcement No. 39 of 2019,
                                       in force since 2019-04-01

That leaves the line nobody shows you: the FX margin. In cross-border sales, your customer pays in RMB and you are settled in foreign currency. In between, someone buys that currency. At WeChat Pay, conversion is triggered at T+1 once the merchant’s sales reach the equivalent of $800, with 16 settlement currencies available (WeChat Pay international merchants page, accessed in 2026). A 1% spread over the reference rate on $5 million in annual sales outweighs the entire fee negotiation. And it appears on no rate card.

Chapter 6. Repatriating funds and data, and keeping to the timeline.

Two things cross the Chinese border in your project, and two different authorities govern them. Funds fall under SAFE; personal data falls under the CAC. A project that has only worked through the first gets stopped by the second, usually at the architecture review, which is too late.

• The payment is collected in RMB by the payment institution, which has cleared it through the domestic system. Nothing is specific to cross-border at this stage.
• The institution must be registered in the 名录 with the local SAFE branch (汇发〔2019〕13号, Art. 3), and the transaction must fall within the scope of small-value current account transactions defined in Article 2.
• Conversion runs on a tight deadline. Article 25 requires the institution to buy or sell the foreign currency within T+1 business day. That is why your payout is triggered by a threshold, not on demand.
• Balance of payments reporting is done transaction by transaction. Article 37 requires 逐笔还原, a transaction-by-transaction reconstruction using the original payment data. Your order references therefore double as reporting records: never make them random.
• The transfer arrives net of fees, in foreign currency, in your account outside China. Reconcile against the operator’s statement, never against the credited amount alone.

Data follows the funds, but under different rules

e-CNY: what a foreign merchant should do about it today

The e-CNY (数字人民币), the central bank digital currency issued by the PBoC, has been in pilot since 2019 and still hasn’t officially launched. It is distributed through a two-tier model by licensed operating institutions, which numbered 22 in early 2026 after twelve more banks were approved. For a merchant, the practical answer is both disappointing and reassuring: there is nothing specific to build. Acceptance runs through the same terminals and QR codes as everything else, thanks to the interoperability the PBoC has mandated since 2021. The only useful step today is to write e-CNY acceptance into your acquiring contract and check that your provider reports it in a separate reconciliation file. The shift on January 1, 2026, which reclassified wallet balances held by commercial banks as deposits, now gives issuers a reason to push it.