What a B2B payment gateway does

A B2B payment gateway is software that connects your business to your customers' bank accounts so they can pay you directly—without you handling their card numbers or bank details. When another business sends you a payment through the gateway, it moves money from their account to yours, records the transaction, and gives both of you a receipt.

The difference between B2B and regular payment processing is what happens after the money arrives. A B2B gateway is built to handle the way businesses actually pay each other: larger amounts, longer payment terms (like net-30 or net-60), multiple approvals before payment, and detailed invoices tied to specific orders. A standard card processor is built for quick, one-time purchases.

The gateway sits between your business and the customer's bank, translating payment requests into language their bank understands and moving the money when both sides agree. You don't touch their financial information—the gateway does, and it encrypts everything so neither you nor anyone else can read it.

Key Takeaways

  • A B2B payment gateway lets other businesses pay you through bank transfers, virtual cards, or payment platforms without you seeing their account details.
  • B2B gateways handle larger payments and longer payment terms than card processors, and they tie payments to specific invoices so both sides know what the money is for.
  • The gateway encrypts all financial information and moves it directly between banks, so your business never stores or touches customer bank details.
  • Most B2B gateways charge a percentage of each transaction or a flat fee per payment, and some charge monthly for access to their platform.
  • Setting up a B2B gateway requires you to connect your business bank account and verify your company's identity, a process that usually takes a few days to a week.

How money moves through a B2B payment gateway

When a customer decides to pay you, they log into the gateway (or you send them a payment link), enter the amount and invoice number, and choose their payment method—usually a bank transfer, a virtual card issued by their company, or a payment platform their accounting team uses. They don't enter their real card or account number; instead, they authenticate through their bank or payment platform, which tells the gateway "yes, this person is authorized to send this money."

The gateway then sends a request to the customer's bank asking them to move the money. Their bank checks that the account has the funds and that the person requesting the transfer is authorized. Once approved, the money moves into your business bank account, usually within one to three business days depending on the banks involved.

Throughout this process, the gateway records every step: who paid, how much, when, what invoice it was for, and what method they used. Both you and the customer get a record they can use for accounting. If there's a dispute later—the customer says they already paid, or you say you never received it—the gateway's record is the proof.

Payment methods B2B gateways accept

Most B2B gateways accept bank transfers (also called ACH transfers in the United States), which move money directly from one business bank account to another. This is the slowest method—usually two to three business days—but it's the cheapest for the customer and the most common way businesses pay each other.

Many gateways also accept virtual cards, which are temporary card numbers that a customer's company issues to their employees or vendors. The virtual card works like a regular credit card but is tied to a specific invoice or purchase order, so the customer's accounting team can track exactly what it paid for. Virtual cards move faster than bank transfers, sometimes within hours.

Some gateways connect to payment platforms like PayPal, Stripe, or Square, so a customer can pay through an account they already have. Others accept wire transfers for very large payments, though these usually cost more and take longer. A few accept checks or purchase orders, though these require manual processing on your end.

Why businesses use B2B gateways instead of asking for checks or wire transfers

A check takes a week or more to arrive, clear, and deposit. A wire transfer costs the customer $15 to $50 and requires them to call their bank or log into online banking to set it up. A B2B gateway lets them pay in seconds from their accounting software, and the money arrives in two to three days without extra fees.

For you, a gateway means you're not managing dozens of different payment methods—some customers sending checks, others wiring money, others paying by card. Everything flows through one system, and your accounting software can pull the records automatically. You also get paid faster because the gateway pushes the money to your account as soon as the customer's bank approves it, rather than waiting for a check to arrive in the mail.

A gateway also reduces the chance of payment errors. When a customer enters an invoice number before paying, the gateway can check that the amount matches what you're owed. If they try to pay the wrong amount, the system can flag it before the money moves. With a check, you don't know there's a problem until you open the envelope.

Costs of using a B2B payment gateway

Most B2B gateways charge a percentage of each transaction—typically 1% to 3%—or a flat fee per payment, usually $0.50 to $2.00. Some charge both: a percentage plus a small flat fee. A few charge a monthly subscription ($50 to $500 depending on the platform) instead of or in addition to per-transaction fees.

The cost structure depends on the payment method. Bank transfers usually cost less (0.5% to 1%) because they're cheaper for the gateway to process. Virtual cards and credit cards cost more (2% to 3%) because the card networks charge the gateway a fee. Wire transfers often have a flat fee of $5 to $15 on top of the percentage.

Some gateways offer volume discounts: if you process more than a certain amount per month, your percentage drops. Others charge different rates depending on whether the customer is in the same country as you or paying from abroad. Before you choose a gateway, ask for a clear breakdown of what each payment method costs and whether discounts explore to your expected volume.

Setting up a B2B payment gateway for your business

To start using a B2B gateway, you'll need to create an account, verify your business identity, and connect your bank account. The gateway will ask for your business name, address, tax ID (usually an EIN in the United States), and the names and titles of the owners or authorized signers. They'll check this information against public records to confirm you're a real business.

Next, you'll connect your business bank account by providing the account number and routing number. Some gateways verify this by sending two small deposits to your account (usually $0.01 to $0.99 each) and asking you to confirm the amounts. This proves you control the account. The whole process usually takes three to seven business days.

Once you're set up, you can create invoices in the gateway, send payment links to customers, or integrate the gateway into your accounting software so payments flow in automatically. Most gateways provide an API (a technical connection) so your software can talk to theirs without you having to log in and check manually.

Choosing between different B2B gateways

The right gateway depends on who your customers are and how they prefer to pay. If most of your customers are large companies with accounting departments, look for a gateway that accepts virtual cards and integrates with accounting software like QuickBooks or NetSuite. If you work with small businesses or startups, a gateway that emphasizes ease of use and low fees per transaction might be better.

Check whether the gateway supports the payment methods your customers actually use. If your customers are mostly in Europe, make sure the gateway handles SEPA transfers (the European equivalent of ACH). If you have international customers, confirm the gateway can accept payments in their currencies and won't charge you a steep conversion fee.

Look at the reporting and integration features. Can you read transaction history as a spreadsheet? Does it connect to your accounting software? Can you set up automatic reconciliation so payments match to invoices without manual work? These features save you time and reduce errors, which can be worth paying a slightly higher fee.

Frequently Asked Questions

Do I need a B2B gateway if I already accept credit cards?

Not necessarily, but they serve different purposes. Credit card processors are built for quick, one-time purchases and charge higher fees (2% to 3%). B2B gateways are built for larger payments with longer terms and usually cost less. Many businesses use both: a card processor for customers who want to pay by card, and a B2B gateway for customers who want to pay by bank transfer or virtual card.

What happens if a customer disputes a payment?

The gateway's record of the transaction—who paid, when, how much, and what invoice it was for—is your proof that the payment happened. If the customer's bank reverses the payment by mistake, you can show the gateway record to their bank and ask them to reverse the reversal. If the customer claims they never authorized the payment, the gateway's authentication record (showing they logged in and confirmed the amount) protects you.

Can I use a B2B gateway if I'm a sole proprietor or freelancer?

Yes, though some gateways have minimum transaction volumes or require you to be registered as a business entity. Many accept sole proprietors and freelancers, especially if you have a business tax ID. Check the gateway's requirements before you sign up—some ask for proof of business registration, while others only need your Social Security number and a business address.

How long does it take for money to show up in my account?

Bank transfers usually take two to three business days. Virtual card payments often arrive within one business day. Wire transfers can arrive the same day if both banks process them quickly, but this is not may provide. The gateway will tell you the expected timeline for each payment method when you set up your account.

What if my customer's bank rejects the payment?

The gateway will notify both you and the customer that the payment failed and usually explain why—insufficient funds, account closed, or a security block from the customer's bank. The customer can then fix the problem (add funds, update their account information) and try again. No money moves until the customer's bank approves it, so you're not at risk.