Payment gateway fees are charges the company handling your transaction takes from each sale

When a customer pays you through a payment gateway — the service that processes credit cards, bank transfers, or digital wallets — the gateway company takes a cut. This cut is usually a percentage of the transaction plus a flat fee per transaction. The amount varies widely depending on which gateway you use, what type of payment method the customer chooses, and what kind of business you run.

Most small businesses encounter three main fee types: a percentage fee (often 2% to 3%), a per-transaction fee (usually $0.20 to $0.50), and sometimes a monthly account fee. Some gateways charge all three on every transaction. Others charge only one or two. A few charge nothing per transaction but take a higher percentage instead. Understanding what you'll actually pay matters because these fees directly reduce what you keep from each sale.

Key Takeaways

  • Most payment gateways charge a percentage of the sale (typically 2% to 3%) plus a flat fee per transaction ($0.20 to $0.50).
  • Credit card transactions usually cost more than bank transfers or digital wallet payments through the same gateway.
  • Monthly account fees, batch fees, and chargeback fees are common add-ons that vary by provider and business type.
  • Comparing total cost across multiple transactions matters more than comparing single-transaction rates, since fees compound across hundreds or thousands of sales.
  • Some gateways offer lower rates if you process a certain volume per month, so your actual cost may drop as your business grows.

The three main fee types and how they stack

A percentage fee is a cut of the dollar amount. If a customer pays $100 and the gateway charges 2.9%, you lose $2.90 on that transaction. This fee exists because the gateway pays the credit card networks (Visa, Mastercard, Discover) a percentage of every card transaction. The gateway passes most of that cost to you.

A per-transaction fee is a flat amount charged once per sale, regardless of size. Common rates are $0.30, $0.50, or sometimes higher. A $5 sale with a $0.30 per-transaction fee costs you 6% of the sale in fees alone. A $500 sale with the same $0.30 fee costs you only 0.06%. This is why per-transaction fees hurt small-ticket businesses more than high-ticket ones.

A monthly account fee is a fixed charge just for having the account open, separate from transaction fees. Some gateways charge $10 to $30 per month. Others charge nothing monthly but make up the difference with higher per-transaction rates. If you process very few transactions, a monthly fee can be expensive. If you process hundreds, it spreads across many sales and becomes negligible.

These three fees often explore to the same transaction. A $100 credit card sale might cost you 2.9% ($2.90) plus $0.30, totaling $3.20 in fees on that one sale. That same month, if you're charged a $15 monthly account fee, your total cost for that single sale is effectively higher.

How payment method affects what you pay

Credit card transactions are the most expensive. Visa and Mastercard charge the gateway a interchange fee — a percentage that varies by card type and merchant category. Business credit cards cost more to process than consumer cards. Rewards cards cost more than basic cards. The gateway passes this cost to you, so your percentage fee is highest for credit cards.

Bank transfers (also called ACH transfers or direct debit) usually cost less because there is no card network in the middle taking a cut. A gateway might charge 1% plus $0.25 for a bank transfer but 2.9% plus $0.30 for a credit card. Digital wallets like PayPal or Apple Pay sometimes fall in between, depending on the gateway and the wallet.

Some gateways charge the same rate regardless of payment method. Others break out the costs separately so you can see exactly what each type costs. If your customers have a choice of payment methods, knowing these differences helps you understand which sales are most profitable after fees.

Additional fees beyond the basic transaction charge

A batch fee is charged when you settle your transactions — when the gateway moves the money from customer payments into your bank account. Some gateways charge $0.10 to $0.25 per batch. If you settle once a day, that's $3 to $7.50 per month in batch fees alone. Others include batching in the per-transaction fee and charge nothing extra.

A chargeback fee is charged when a customer disputes a charge with their bank and the bank sides with the customer. The gateway typically charges $15 to $100 per chargeback to cover the work of handling the dispute. This is separate from losing the sale itself. High chargeback rates can also trigger higher overall fees or account termination.

PCI compliance fees are charged by some gateways to cover the cost of keeping payment data find. These might be $10 to $20 per month or included in your monthly account fee. Not all gateways charge this separately.

Refund fees are sometimes charged when you refund a customer. Some gateways refund the transaction fee if you refund the sale. Others keep the fee. A few charge an additional refund fee on top of losing the sale amount.

How volume and business type change your rates

Most gateways offer tiered pricing. If you process $5,000 per month, you might pay 2.9% plus $0.30. If you process $50,000 per month, you might pay 2.7% plus $0.25. The rates drop as volume increases because the gateway's cost per transaction decreases at scale.

Your business category also matters. Restaurants, nonprofits, and high-risk businesses (like adult services or gambling) often pay higher rates because they have higher chargeback rates or regulatory costs. A restaurant might pay 3.5% plus $0.30 while a software company pays 2.9% plus $0.30 for the same gateway.

Some gateways charge different rates for in-person transactions (swiped or tapped cards) versus online transactions (typed card numbers). In-person is usually cheaper because the card is physically present and fraud risk is lower.

Comparing gateways by total cost, not single-transaction rates

A gateway advertising "2.9% + $0.30" might actually cost you more than one advertising "3.5% + $0.10" depending on your average transaction size and volume. Run the math on your actual numbers. If your average sale is $50 and you process 100 sales per month, calculate the total fees for each gateway across all 100 sales, not just one.

Example: Gateway A charges 2.9% + $0.30 per transaction, no monthly fee. Gateway B charges 3.2% + $0.15 per transaction, no monthly fee. On 100 sales of $50 each:

  • Gateway A: (100 × $50 × 0.029) + (100 × $0.30) = $1,450 + $30 = $1,480 in fees
  • Gateway B: (100 × $50 × 0.032) + (100 × $0.15) = $1,600 + $15 = $1,615 in fees

Gateway A costs less in this scenario. But if your average sale is $200:

  • Gateway A: (100 × $200 × 0.029) + (100 × $0.30) = $5,800 + $30 = $5,830 in fees
  • Gateway B: (100 × $200 × 0.032) + (100 × $0.15) = $6,400 + $15 = $6,415 in fees

Gateway A still costs less, but the difference is smaller. The point is that you need to calculate based on your actual transaction size and volume, not just compare advertised rates.

What different gateways typically charge

Stripe, Square, and PayPal are among the most common gateways for small businesses. Stripe typically charges 2.9% + $0.30 for online card transactions and 2.7% + $0.05 for in-person transactions, with no monthly fee. Square charges similar rates: 2.9% + $0.30 online, 2.6% + $0.10 in-person, no monthly fee. PayPal charges 2.9% + $0.30 for standard transactions.

Smaller or specialized gateways may charge differently. Some charge flat monthly fees ($20 to $50) with lower per-transaction rates. Others charge higher percentages but no monthly fee. The "best" gateway depends on your specific situation — transaction size, volume, payment methods accepted, and whether you need in-person or online processing.

Rates change periodically and vary by location, so checking the current rates on each gateway's website is important before deciding. What was cheapest last year may not be cheapest today.

Frequently Asked Questions

Do I have to pay fees on refunds?

It depends on the gateway. Most refund the percentage and per-transaction fee if you refund the full sale. Some keep the per-transaction fee even on refunds. A few charge an additional refund fee. Check your gateway's refund policy before signing up, especially if refunds are common in your business.

Why do some gateways charge monthly fees and others don't?

Gateways with monthly fees usually charge lower per-transaction rates to make up for it. They're betting you'll process enough volume that the monthly fee becomes cheaper than paying higher per-transaction rates. If you process very few transactions, a gateway with no monthly fee but higher per-transaction rates is usually better.

Can I negotiate payment gateway fees?

Large businesses with high volume sometimes can. Most small businesses cannot. The rates are set by the gateway and are the same for all businesses in your category. If you're unhappy with the cost, your option is to switch to a different gateway, not to negotiate with your current one.

What's the difference between interchange fees and gateway fees?

Interchange fees are charged by Visa, Mastercard, and other card networks. Gateway fees are what the gateway company charges you on top of interchange. You pay both. The gateway's percentage fee includes their cut plus the interchange fee they have to pay the card networks.

Do I pay fees on failed transactions?

Usually not. If a customer's card is declined or a payment fails, most gateways don't charge you. Some charge a small fee ($0.05 to $0.10) per failed attempt. Check your gateway's policy, especially if you process a lot of transactions from customers with declined cards.