Square Fee Calculator
Square processing fees monthly.
Calculate Square payment processing fees by entering your monthly volume, transaction mix, and card-present vs. card-not-present rates.
What this tool does
This calculator models total monthly payment processing fees based on your transaction activity and Square's fee structure. It combines percentage-based charges on card volume with fixed per-transaction costs, accounting separately for card-present transactions (typically lower-rate, such as in-person payments) and card-not-present transactions (typically higher-rate, such as online or phone payments). The result shows your estimated monthly fee total given your monthly volume, average transaction size, and the split between these two transaction types. Monthly volume and average transaction size are the primary drivers of the output. The calculation assumes fees apply uniformly across all transactions in each category and does not model promotional rates, contract variations, or other special conditions. This tool is for illustration purposes and reflects fees based only on the inputs you provide.
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Formula Used
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Disclaimer
Results are estimates for educational purposes only. They do not constitute financial advice. Consult a qualified professional before making financial decisions.
Square charges different rates for card-present (in-person tapped/swiped cards) and card-not-present (online, invoice, keyed-in) transactions. Card-present is cheaper at around 1.75% because fraud risk is lower; card-not-present sits at 2.9-3.5% plus a fixed per-transaction fee for some card types. Your effective rate is the blended average weighted by your channel mix.
50,000 monthly volume split 50/50 between in-person and online at 1.75% and 2.9% rates = 875 + 1,450 = 2,325 monthly fees. Effective rate 4.65% - that's high because the blend includes the more expensive online share. Mostly in-person businesses pay closer to 2% effective; mostly online around 3%.
Volume discounts exist but only for larger businesses (200k+/month typically qualifies for Square's custom rates). At smaller scale, the standard rates apply without negotiation. For high-volume card-not-present businesses, alternative processors (Stripe at 2.9% + 20p, Adyen at 1.5-2.5% custom) often beat Square on total cost once hardware savings are factored.
A worked example
Try the defaults: monthly card volume of 50,000, avg transaction size of 45, card-present of 50%, card-present rate of 1.75%. The tool returns 1,162.50. You can adjust any input and the result updates as you type — no submit button, no reload. That's the real power here: seeing how sensitive the output is to one or two assumptions.
What moves the number most
The result responds to Monthly Card Volume, Avg Transaction Size, Card-Present %, Card-Present Rate %, and Card-Not-Present Rate %.
The formula behind this
Card present fees = CP volume × CP rate %. Card not present fees = CNP volume × CNP rate %. Effective rate = total fees ÷ volume × 100. Everything the calculator does is shown in the formula box below, so you can check the math against your own spreadsheet if you want.
Using this as a check-in
Re-run this every three months. A single reading tells you where you stand; four readings tell you whether things are improving. The trend matters more than any individual snapshot.
What this doesn't capture
The score is a composite of the inputs you provide. Life context — job security, family obligations, health, housing — doesn't appear in the math but shapes the real picture. Use the number as a prompt, not a verdict.
££50,000 volume × 50% CP at 1.75% + CNP at 2.9% = 1,162.50.
Inputs
This example uses typical values for illustration. Adjust the inputs above to match a specific situation and see how the result changes.
Sources & Methodology
Methodology
This calculator computes your monthly processing fees by applying two separate fee structures to different transaction types. The tool divides your total monthly card volume into card-present and card-not-present segments based on the percentage you specify, then multiplies each segment by its respective percentage rate to calculate fees. It then sums these two components to determine total fees. The calculator assumes constant fee rates throughout the month, treats your stated card-present percentage as fixed, and applies rates uniformly across all transactions within each category. It does not model per-transaction flat fees, variable rates based on card type or merchant category, payment processing delays, refunds, chargebacks, or changes in your volume mix. Results reflect the stated rates only and do not account for seasonal variation or rate changes.
References
Frequently Asked Questions
Is Square always cheapest?
Does Square charge monthly?
When do volume discounts kick in?
What about international cards?
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