KYC (Know Your Customer)

Also called Know Your Customer, CIP, customer identification program

The identity verification your acquirer must perform on your business and its owners before you can accept cards.

What it is

KYC is the identity layer of anti-money-laundering compliance. For a merchant account it means the acquirer must establish who you are, who owns the business, and that the business is what it claims to be, before funds flow. It is not a payments industry preference; it flows from the Bank Secrecy Act framework and reaches merchants through the sponsor bank and acquirer. In practice a merchant experiences KYC as the identity portion of underwriting: legal entity name matching the IRS documentation exactly, formation documents, EIN, government-issued identification and date of birth and Social Security number for each beneficial owner at or above 25 percent ownership, physical address verification, a bank account in the legal entity name, and sanctions screening on the business and the individuals. Beneficial ownership at the 25 percent threshold comes from the customer due diligence framework that applies to banks. Separately, the Corporate Transparency Act created a beneficial ownership information reporting regime administered by FinCEN whose scope changed materially during 2025; because that framework has been in flux, any statement about what your company must file directly with FinCEN should be verified against FinCEN's current guidance and with your own counsel rather than taken from a payments article. Ongoing KYC does not stop at boarding. Acquirers are expected to refresh information, monitor for changes in ownership or business model, and re-screen periodically.

Why it matters to your business

The single most common cause of a delayed approval is a name mismatch. Your legal entity name must match your IRS documentation character for character, your bank account must be in that name, and your ownership must total 100 percent with every owner at or above 25 percent disclosed. Getting those three right converts a two-week approval into a two-day one. Also: never send identity documents by unencrypted email to a salesperson. Ask for a secure upload link. If the answer is just text me a photo of your license, that tells you what you need to know about how the rest of your file will be handled. This is education, not legal advice; ownership reporting obligations are a legal question for your own counsel.

Where it gets contested

The friction argument is real: KYC is the largest single cause of slow merchant boarding, and instant-approval platforms compete precisely by deferring it. Deferring it does not remove it, it moves it after the money starts moving, which is why aggregator merchants experience identity verification as a surprise funding hold rather than as paperwork. A second and less-discussed issue is data handling. The merchant hands over identity documents, ownership detail and Social Security numbers to a salesperson, an ISO, a gateway and an acquirer. The security obligations on that chain vary considerably, and merchants rarely ask how those documents are transmitted or stored. The unresolved piece is the beneficial ownership reporting regime, which changed in 2025 in ways that generated substantial confusion, and which sits alongside, not instead of, the bank-side customer due diligence obligations. Anyone who tells you confidently what your company must file should be asked when they last checked.

How to check it yourself

Put your IRS EIN letter, your Sunbiz registration and your bank account statement side by side and confirm the legal name is identical on all three. Any variation, including a missing LLC or an ampersand instead of the word and, will slow or stop your approval.

Receipts

Claims above that are checkable, with where to check them. Published so you do not have to take anyone's word for it.

Ownership and identity verification, formation documents, EIN and personal credit are core underwriting checks
paymentcloudinc.com ↗
FinCEN administers the federal anti-money-laundering and beneficial ownership frameworks
fincen.gov ↗
FinCEN guidance on the payment processor exemption illustrates how the BSA framework classifies payments participants
fincen.gov ↗