Square Credit Card Processing Fees: Complete 2025 Breakdown

Everything Square merchants need to know about flat-rate pricing, hidden fees, and when to switch.

Section 1 — Square Pricing Overview

Square uses a flat-rate pricing model that charges the same percentage regardless of card type. This simplicity comes at a cost for higher-volume merchants.

Transaction TypeRate
In-person (card present)2.6% + $0.10
Online / e-commerce2.9% + $0.30
Invoices3.3% + $0.30
Manually keyed3.5% + $0.15

These rates apply to all card types — Visa, Mastercard, Amex, and rewards cards all cost the same. While this is predictable, merchants with mostly debit card transactions are effectively subsidizing the higher interchange cost of premium rewards cards.

Section 2 — Understanding Your Effective Rate

Your effective rate is the total fees you paid divided by your total card volume. For Square merchants, the effective rate is typically:

Section 3 — Hidden Fees

Beyond the standard rate, Square charges additional fees that many merchants overlook:

Section 4 — Compare With Interchange-Plus Pricing

Most merchants processing over $10,000/month pay significantly less under interchange-plus pricing:

Pricing ModelEffective RateMonthly Cost (on $50k volume)
Square (flat-rate)~2.7%~$1,350
Interchange-Plus (typical)~1.8%~$900
Potential Savings~0.9%~$450/month

With interchange-plus, you pay the actual Visa/Mastercard interchange rate plus a small fixed markup. For a merchant doing $50,000/month, that's roughly $450 in monthly savings — or $5,400 per year.

See our full merchant processing fee breakdown to understand how interchange, network fees, and processor markup combine.

Section 5 — Calculate Your Processing Fees

Enter your monthly volume to see exactly what you're paying and how much you could save with better pricing.

Calculate My Processing Fees

Section 6 — Free Savings Audit

Upload your Square merchant statement and our team will analyze every line item to find hidden fees and better rates.

Upload Your Merchant Statement for a Free Analysis