What Happens to Processing Fees When You Refund a Customer?
Understand retained original fees, any separate refund charges and how to budget for refunds without double counting processing costs.
The short answer
Returning a customer’s money does not necessarily return the processing fee you paid on the sale. Check whether the original fee is retained, whether a separate refund charge applies and how partial refunds are treated. Keep the customer refund amount separate from the provider’s fees when calculating costs.
In this guide
Separate the refund from the fees
| Amount | What it means |
|---|---|
| Customer refund | The money returned to the customer; it reverses some or all of the sale. |
| Retained processing fee | The original payment fee that the provider does not credit back. |
| Separate refund fee | An additional fee for processing the refund, if your agreement includes one. |
Square’s UK refund guidance states that the original processing fees are not returned. Stripe also explains that original processing and currency-conversion fees are not returned and that a refund charge can depend on the fee schedule. These examples do not establish identical terms for every provider.
Worked example: a full refund
Fictional tariff. A customer pays £100. Processing costs 2%, so £98 remains after that fee. You later refund the full £100. Assume the provider retains the £2 processing fee and charges nothing extra for the refund.
Across the sale and refund, the business has a £2 net cash cost, before stock handling, delivery or staff time. The £100 returned is not another £100 processing fee.
For a partial refund, establish how much of the original fee, if any, is credited. Do not simply calculate a new percentage on the smaller retained sale unless the provider’s refund rules actually do that.
Worked example: refunds in a monthly budget
Fictional month. Gross card sales are £10,000, charged at 2%, giving £200 processing fees. Customers receive £1,000 in refunds. Assume no original fees are returned and no separate refund fee is charged.
| Measure | Amount |
|---|---|
| Gross card sales | £10,000 |
| Customer refunds | £1,000 |
| Sales after refunds | £9,000 |
| Processing fees | £200 |
| Fees as a share of sales after refunds | About 2.22% |
The £20 originally charged on the refunded £1,000 is already inside the £200. Adding it again would double count the same fee. If separate refund-event fees apply, add only those additional charges.
Questions to put to your provider
- Are any original percentage or fixed fees returned after a full or partial refund?
- Is there a separate refund fee, and does it differ by channel or payment method?
- What happens to currency-conversion charges?
- Which balance funds the refund, and what happens if it is insufficient?
- What timing and account-access conditions apply, including after account closure?
Keep the refund report and fee adjustments together when reconciling a statement. A refund issued this month may relate to a sale charged in an earlier period, so a single month’s fee-to-sales ratio can be misleading.
Compare providers using the same refund pattern
Price the same gross sales, payment counts and expected refund activity under both offers. If you model processing on gross sales and the original fees are retained, those retained fees are already included. Add a separate allowance only for extra refund charges or adjustments the model has not captured.
Keep the cost comparison separate from decisions about a customer’s refund entitlement. The calculator helps organise provider costs; it does not determine consumer rights or reproduce every provider’s refund accounting. For businesses with high returns, retain a supporting refund worksheet with the comparison.
Common questions
Does a free refund mean the original processing was free?
Not necessarily. It can mean there is no additional refund fee while the original payment fee is retained. Check both parts.
Can I estimate processing from sales after refunds?
Only if that matches the provider’s charging rules. Where original fees remain payable, calculating only on net sales can understate the bill.
Put your own figures to work.
Use the free calculator to organise your costs and keep a report. If something is unclear, you can ask for a free initial review.
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Sources and how to use this guide
Primary references checked on 15 October 2026:
Worked examples are original fictional scenarios, not customer results, market averages or provider quotations. Unless stated otherwise, they use a consistent VAT basis and include only the costs listed. Provider prices, eligibility and terms can change. Check your written agreement before deciding.
Our guides explain costs and comparison methods. They do not rank the whole market or claim hands-on product testing. Source links are references, not a claim of partnership. Read the calculation method and limitations, or about the service.
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