How Payment Processing Fees Affect Your Profit Margins?

27 October, 2026

Payment processing fees can significantly eat into your profit margins. But how? Suppose a customer buys a $100 product from your store and pays by credit or debit card or directly from their bank. You receive the payment, but the full $100 does not necessarily make it into your account. A portion goes toward processing the transaction. The amount might seem small on a $100 sale, but just multiply that cost across hundreds or thousands of transactions, and it becomes a business expense worth paying attention to.

This is where payment processing fees start affecting your profit margins. The more you sell, the more those fees add up. In 2025, credit and debit card transactions made up 68% of total payment volume, with credit cards accounting for 43% alone. In 2025, credit and debit card transactions made up 68% of total payment volume, with credit cards accounting for 43% alone.

Card payments make up such a large share of everyday transactions that merchants need to know how much revenue they keep and how payment processing costs affect their profit margins.

What are Payment Processing Fees?

Payment processing fees apply when a customer makes a payment by credit or debit card to your business. These fees are charged for processing the transaction and transferring the payment from the customer’s bank to the business bank account.

How much you pay depends on your payment provider, card network, transaction type, and pricing structure. You may see a percentage of the transaction amount, a fixed fee per transaction, or a combination of both.

How Do These Fees Affect Your Profit Margin

Don’t look at just one transaction. Consider your total payment volume each month, and you’ll get a clearer picture of how much payment processing fees are affecting your profits.

This matters even more for businesses with tight profit margins. If most of your revenue already goes toward inventory, wages, rent, shipping, and other operating expenses, you’ll be left with less money to cover those costs and keep as profit.

For example, suppose your business generates $50,000 in monthly sales and earns $10,000 in profit after covering its other expenses. That gives you a 20% profit margin. If you then pay $1,350 in payment processing fees that haven’t already been included in your expenses, your profit drops to $8,650 and your margin falls to 17.3%. Your sales haven’t changed, but you’re keeping less of the money you earn.

The impact of these costs is significant enough that they have received attention at the federal level in Canada. In 2024, changes to domestic consumer credit interchange rates were introduced for qualifying small businesses. The Government of Canada estimated that the changes would save eligible small businesses approximately $1 billion over five years.

Your payment provider may give you an estimated processing rate, but that may not be the full cost you pay. Your pricing plan can include fixed transaction fees, monthly charges, or other account-related fees. Look at your total payment processing spend to get a clearer picture of how much these costs take from your profit margins.

How Payment Volume Affects Processing Costs

These costs can also change as your payment volume grows. Let’s say your business processes $20,000 in card payments each month at a 2.5% rate. That works out to $500 in monthly fees. If your monthly card sales grow to $100,000, the same rate means $2,500 in fees.

The rate has not changed, but your monthly processing expenses have increased fivefold because your payment volume has grown.

The rate itself also matters. If your business processes $100,000 in card payments each month and your processing rate rises from 2.5% to 2.7%, your monthly cost increases from $2,500 to $2,700. That 0.2 percentage-point increase adds $200 per month, or $2,400 over a year, assuring your monthly payment volume stays the same.

To understand the actual impact on your business, compare your total processing fees with your total card payment volume. Check the percentage-based charges, per-transaction fees, and monthly account fees on your statements. This clears what you’re paying and whether your current processing arrangement is eating your profit margins more than expected.

How to Calculate Your Effective Payment Processing Rate

As mentioned above, the processing rate your provider quotes does not always show the full cost of accepting card payments. To know what you’re actually paying, calculate your effective payment processing rate using your total processing fees and total card payment volume for the same period.

Use this formula:

Effective Processing Rate = (Total Processing Fees / Total Card Payment Volume) * 100

Let’s say your $50,000 business processes card payments every month and pays $1,350 in total processing fees.

Total card payment volume = $50,000
Total processing fees = $1,350
Effective processing rate = 2.7%

Divide total processing fees $1,350 by total card payment volume $50,000 and multiply the result by 100.

$1,350 ÷ $50,000 = 0.027
0.027 × 100 = 2.7%

Your effective processing rate is 2.7%.

Now you have a cleared view of how much you’re spending on payment processing relative to your card sales. For an accurate calculation, include the processing-related charges on your statement, such as transaction fees and monthly processing fees. Make sure you use the same billing period for both figures.

Review this rate each month to help you compare statements or evaluate another provider’s pricing. Just make sure you’re comparing the same types of fees and services, since the quote rate alone does not tell you the full cost of a payment processing plan.

How to Reduce Payment Processing Costs

A few changes to your payment setup and pricing plan could help you keep more of your revenue.

Review Your Monthly Statements

Check your monthly statements to see how much transaction fees, monthly account fees, and other processing-related costs you’re paying. Then compare these expenses with your card payment volume to see how much you’re paying overall. If a charge is unclear, ask your provider to explain what it covers.

Compare Payment Processing Providers

Don’t compare providers based on their advertised transaction rates alone. Check the full pricing structure, which could include percentage-based fees, fixed transaction charges, monthly fees, contract terms, and any additional costs. Don’t get trapped into a lower advertised rate as it doesn’t always mean you’ll pay less overall.

Choose the Right Pricing Plan for Your Business

As your business grows, you need to tailor your pricing plan according to your monthly transaction volume, average transaction value, and the types of payments your customer uses. Also, review your current plan regularly to make sure the fees still make sense for your business.

Understand Your Surcharge Options

In Canada, eligible businesses can apply for a credit card surcharge program under applicable network rules and provincial requirements. However, surcharging is not available exclusively for credit card transactions. Businesses must follow the relevant disclosure and other requirements. Before introducing a surcharge, confirm the rules that apply to your business and explain any charge clearly to customers.

How to Confirm Your Eligibility for Surcharge Programs

Check your card network’s surcharge rules and requirements.
Confirm the provincial or territorial regulations that apply to your business.
Contact your payment provider to verify eligibility.
Check the disclosure, notice, and customer communication requirements.
Confirm which credit cards and payment methods qualify before applying a surcharge.

Review Your Processing Costs

Compare your effective processing rate month to month, particularly after a pricing change or an increase in sales. This way, you can spot changes early and get useful information when discussing fees with your provider.

Keep More of What Your Business Earns

Payment processing fees is another expense your business has to deal with for processing transactions. While you can’t completely avoid these costs, you can review your pricing plan, compare providers, and look for ways to reduce this expense and keep more of what you earn. Always keep reviewing your processing expenses to understand how much revenue you’re actually keeping and whether you need to switch to a different pricing plan.

If you want to review your payment processing options, Obvio Solutions offers payment solutions for Canadian businesses, including Clover payment systems and surcharge programs for eligible merchants. We’ll take a look at your payment processing expenses and help you understand your options for managing these costs.

Frequently Asked Questions

Are payment processing fees tax deductible in Canada?

Yes, payment processing fees are deductible in Canada. To claim that, keep your payment processor statements and transaction records, and report the eligible fees as business expenses when filing your taxes. These deductions lower your taxable business income, which could reduce the amount of income tax you owe.

Is there a different processing fee for credit and debit cards?

Yes, the fee structure of credit and debit cards is different. There are various factors affecting this such as the card network, payment provider, transaction type, and your pricing agreement. Check your processing statement to see how each payment method affects your costs.

Can a business pass payment processing fees on to customers in Canada?

In some cases, you can apply surcharges to eligible credit card transactions. But you must follow the card network’s rules, inform customers about the fee, and comply with the laws that apply in their province or territory. Debit card payments cannot be surcharged. Check the applicable rules before adding a surcharge to customer payments.