How do refunds affect processing fees?

Fees are often charged on gross sales including orders that later refund. Refunded volume still incurred fees on the original charge, so part of your fee spend does not return with the refund.

What does this calculator estimate?

It estimates refunded sales from your sales volume and refund rate, then multiplies by your fee rate to approximate fee loss attributable to refunded orders.

Can sales volume be negative?

No. Enter a zero or positive sales figure; negative sales are rejected.

Refund Fee Impact Calculator

Calculate

Sales volume (£)

Refund rate (%)

Fee rate (%)

Results are estimates for informational purposes only and may be rounded.

Tip: Press Enter to calculate.

Estimate how refunds affect fees and net revenue. Enter sales, refund rate and fee rate to see the expected fee loss on refunded orders.

Use this calculator when you need a fast, reliable answer without opening a spreadsheet. Enter your figures below and press Calculate. PercentNinja shows the key outputs you typically need for pricing decisions, VAT checks, ecommerce payouts or ad reporting.

When to use this

Comparing payment processors and marketplace fees
Estimating net payout before you ship an order
Protecting your margin by understanding fee impact

Worked examples

Example 1

Question: Sales £10,000, refunds 3%, fee 5%.

Refunded = 10,000×0.03 = £300
Fee loss = 300×0.05 = £15

Example 2

Question: Sales £2,500, refunds 8%, fee 2.9%.

Refunded = £200
Fee loss = 200×0.029 = £5.80

Refund Fee Impact Calculator

Calculate

When to use this

Worked examples

Example 1

Example 2

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