When a B2B payment is “almost correct,” it’s often the bank-identification details that cause the problem—missing digits, the wrong code type, or a branch mismatch. If your business sends funds to or from Bank of China and a U.S. clearing network is part of the route, understanding the ABA (routing) number can help you reduce payment delays, returns, and back-and-forth with beneficiaries.

Below is a practical guide for finance teams handling supplier payouts, marketplace settlements, overseas services, or cross-border operations.

Why these numbers matter in day-to-day business payments For businesses, bank codes aren’t trivia—they’re operational. The right identifier: Routes the payment to the correct bank/branch- Prevents rejections in ACH or wire processing Shortens reconciliation time when you’re matching incoming/outgoing transfers

This becomes especially relevant when you’re paying an overseas vendor who provides a Bank of China receiving account (or when your own Bank of China account is receiving U.S.-origin funds).

ABA number vs. routing number: what’s the difference? These terms are often used interchangeably, but the meaning depends on context.

ABA number (U.S. routing number) A 9-digit U.S. bank identifier used in U.S. payment rails. Commonly required for ACH transfers, direct deposits, and many U.S. domestic wires.

“Routing number” as a broader label In the U.S., “routing number” typically refers to the ABA routing number. In international conversations, people sometimes say “routing number” when they actually mean another bank code (for example, SWIFT/BIC or an in-country clearing code).

Key takeaway: If the payment touches U.S. domestic rails, you’re generally looking for a 9-digit ABA routing number. For cross-border wires, you’ll usually need SWIFT/BIC, and sometimes additional destination details depending on the corridor.

When you’ll use these details with Bank of China Here are common scenarios where businesses run into ABA/routing requirements:

1) U.S. domestic payments (ACH, payroll-like flows) If you’re making or receiving a U.S.-based transfer connected to a Bank of China account held within the U.S. banking system, the payer bank may request the ABA routing number.

Typical use cases include: Vendor payments through ACH- Recurring debits/credits tied to U.S. settlement Transfers between U.S. financial institutions

2) International wire transfers For cross-border wires, the routing information usually shifts: SWIFT/BIC identifies the bank in the global wire network. An ABA routing number may still be requested if the transfer is routed through the U.S. (or if an intermediary/beneficiary bank requires it).

Practical example: a U.S. buyer paying an Asia-based supplier may be asked for SWIFT/BIC, while the sending bank’s compliance or wire form might also prompt for a routing number depending on the path the payment takes.

How to find the correct ABA/routing number (without guesswork) Because bank details can vary by branch, country, and payment method, rely on the source that matches the exact account you’re paying.

Use these options:

1. Bank-issued checks (for U.S. accounts) If the account is a U.S.-based checking account, the 9-digit routing number is commonly printed on the bottom of the check.

2. Account statements or official account documentation Statements sometimes list routing details used for ACH/wires, or direct you to the correct instruction set.

3. Bank-provided wire/ACH instructions Many businesses request a beneficiary’s standardized “payment instructions” document that includes the exact routing fields needed.

4. Confirm with the bank or the beneficiary When in doubt—especially for higher-value supplier payments—confirm the routing details through an authenticated channel (not just an email thread).

A quick checklist before you hit “send” To reduce failed transfers and support tickets, confirm: Payment type: ACH vs. domestic wire vs. international wire Receiving bank location: U.S. account vs. non-U.S. account Correct codes: ABA routing number (9 digits) and/or SWIFT/BIC- Beneficiary name and account number: matches bank records Intermediary bank details (if provided): required for some corridors

FAQs for finance teams

Is an ABA number used outside the United States? Generally, no. ABA routing numbers are designed for U.S. payment systems. Other countries use different banking codes (and cross-border wires often use SWIFT/BIC).

How do I verify I have the right routing number? Use bank-issued documentation (statements, official payment instructions, or U.S. checks) or confirm through the bank/beneficiary via a trusted process.

Do international wires always need a routing number? Not always. International wires typically rely on SWIFT/BIC, but depending on the route, intermediary banks, or the sending bank’s form requirements, you may be asked for additional identifiers.

Reducing bank-detail complexity in cross-border operations Even when you understand routing formats, collecting and validating bank codes across multiple countries can become an operational burden—especially if you’re paying many suppliers, contractors, or overseas teams.

A global payments platform like DogPay is designed to streamline cross-border business payouts and collections so your team can spend less time chasing bank details and more time executing payments, reconciling transactions, and managing cash flow. Common business use cases include: International supplier payments- Ad and platform spend (e.g., paying for major digital channels) Cross-border payroll and contractor payouts ## Closing: choose the right identifier for the payment route If