Payment Processing Fee Calculator
Calculate transaction processing fees, net payout amounts, and invoice gross-up requirements.
Currency Notice: Currency selection changes how amounts are displayed; it does not convert exchange rates.
Fee Notice: Results are estimates based on the fee assumptions you enter. Actual processing fees may vary by provider, plan, transaction type, currency, taxes, or other applicable interchange charges.
Net Payout Breakdown
Estimated net deposit after all percentage and fixed processor fees.
Understanding Payment Processing Fees
Merchant payment processors and gateways typically charge a two-part fee structure on every transaction: a variable percentage fee (covering card brand interchange, risk, and processing) plus a fixed flat fee per swipe or checkout.
Net = Amount − (Amount × Rate + Fixed)Calculates actual bank deposits received after fee deductions.
Gross = (Desired Net + Fixed) ÷ (1 − Rate)Calculates what to bill a client to retain your full required net sum.
Effective Fee Rate & Impact of Transaction Size
Because fixed per-transaction fees (e.g. $0.30) remain flat regardless of amount, your effective fee percentage changes based on the invoice value:
| Transaction Amount | Assumed Rate (2.9% + $0.30) | Total Fee | Effective Fee Rate |
|---|---|---|---|
| $5.00 | $0.15 + $0.30 | $0.45 | 8.90% |
| $100.00 | $2.90 + $0.30 | $3.20 | 3.20% |
| $1,000.00 | $29.00 + $0.30 | $29.30 | 2.93% |
Step-by-Step Worked Example (Gross-Up)
Goal: You need to receive exactly $1,000.00 net on an invoice with 2.9% + $0.30 processing fees
- 1. Desired Net + Fixed Fee = $1,000.00 + $0.30 = $1,000.30
- 2. Denominator = 1 − 0.029 = 0.971
- 3. Required Gross Invoice = $1,000.30 ÷ 0.971 = $1,030.18
- 4. Processor Fee Deducted = ($1,030.18 × 2.9%) + $0.30 = $30.18
- 5. Exact Net Deposited = $1,030.18 − $30.18 = $1,000.00
Frequently Asked Questions
What is the difference between percentage fees and fixed fees in payment processing?▼
Percentage fees (e.g. 2.9%) scale with the transaction total to cover card network interchange, platform servicing, and fraud risk. Fixed fees (e.g. $0.30) cover flat authorization and payment gateway transmission costs per transaction.
What is invoice gross-up and when should I use it?▼
Invoice gross-up calculates the exact higher amount you must bill a client so that after percentage and fixed fees are deducted by the processor, your net bank deposit exactly equals your required billing amount.
How does transaction size affect the effective fee rate?▼
Because of fixed flat fees (like $0.30), smaller transactions experience a significantly higher effective percentage fee (e.g., a $2 charge with $0.36 in total fees has an effective rate of 18%) compared to larger transactions.
Are merchant processing fees tax-deductible?▼
In many jurisdictions, payment processing and transaction fees paid to merchant gateways are treated as ordinary business operating expenses and may be deductible. Tax treatment varies by country, business structure, and local rules, so confirm the specifics with a qualified tax professional.
Related Financial Tools
Explore complementary calculators for pricing, margins, and cost analysis.
Pricing Calculator
Calculate target selling price from unit costs, target profit margins, and platform transaction fees.
Freelancer Hourly Rate Calculator
Calculate required hourly, daily, and monthly billing rates based on income targets, overhead, and utilization.