Stripe vs Square 2026: Which Payment Processor Wins?

Quick verdict

Choose by where your revenue happens, not by the headline fee. Stripe is built for online, recurring, invoiced and cross-border revenue: SaaS, ecommerce, marketplaces and B2B services. Square is built for in-person commerce: retail, restaurants, salons and mobile vendors, with a ready-made point of sale.

Hybrid businesses, such as a brand with a pop-up shop or a studio that also sells memberships online, can run both. Pick the tool for your dominant channel first and add the second only when the volume justifies another set of payouts to reconcile.

Side-by-side comparison

The fees below are US rates for standard cards. Stripe has a single pay-as-you-go price list; Square's rates depend on which of its three plans you are on.

Pricing

On a single payment the gap looks small. Across a year it is not. These examples use the US rates above.

Three things stand out.

First, Square's free plan is now the expensive option online. Since Square's October 2025 pricing change, online and invoice card payments on the free plan cost 3.3% + 30¢. A business taking $500,000 a year online on Square Free pays about $2,000 more than on Stripe, which is more than the $588 a year Square Plus costs. If you stay on Square, run that comparison.

Second, small tickets punish fixed fees. On an $8 coffee, Square's 15¢ fixed fee is most of the cost, which pushes the effective rate past 4%. Stripe's 5¢ is lower, but Stripe has no ready-made café POS, so the real choice for a café is usually Square Plus versus Square Free.

Third, ACH changes the economics of B2B invoicing. A capped bank payment on Stripe costs a few dollars on a five-figure invoice. A card payment on the same invoice costs hundreds. Square caps ACH at $10 only on paid plans.

If you sell into Europe, Stripe also publishes local rates there: 1.5% + €0.25 for standard EEA cards and 2.8% + €0.25 for premium EEA cards, with surcharges for UK and international cards. Square only processes cards in Ireland, France and Spain within the EU.

Feature analysis

Online checkout and subscriptions

Stripe is the stronger choice online. Checkout, Payment Links and Elements give you a hosted or embedded checkout without building one from scratch, and Stripe Billing covers trials, proration, usage-based pricing, failed-payment retries and multiple plans per customer. Square Online and Square Subscriptions handle a simple shop or a fixed monthly membership, and stop there.

A third option belongs in this section for businesses that don't want to assemble that stack at all. Whop is a payment platform where an online business runs its checkout, subscription billing, payouts and ads from a single dashboard, so the checkout link, the renewal plan, the payout to the bank and the ad campaign that drove the sale all sit in one account instead of four tools wired together. Whop lists card fees from 2.7% + $0.30 per transaction with no fixed monthly platform fee, and adds billing at 0.5% per transaction only when switched on. It suits a SaaS, agency or service business that would rather run the business from one place than integrate one; a company that needs Stripe's usage-based pricing and proration depth, or that already has an engineering team on billing, should stay with the two above.

If you report SaaS metrics like MRR, churn and net revenue retention, Stripe's subscription data maps cleanly onto them. Square's does not once you add tiers or annual plans.

In-person point of sale

Square owns this category. Its POS apps for retail, restaurants and appointments include item libraries, inventory, kitchen display, booking and staff management, and a new merchant can take cards within a day. Stripe Terminal gives you certified readers and APIs, but you build the point-of-sale software yourself or buy it from a partner. Unless you have developers or a POS partner, a physical business should start with Square.

Invoicing and B2B payments

Stripe Invoicing adds 0.4% per paid invoice on its Starter plan, on top of the payment fee, and lets clients pay by card or by ACH capped at $5. For a service business sending $5,000+ invoices, steering clients to bank payment is one of the easiest margin wins available. Square invoicing is included in its plans, but ACH is 1% with no cap on the free plan, so large invoices cost more. This matters as much for cash as for fees: see our guide to the cash conversion cycle for how payment terms and payout timing add up.

Hardware and setup

Square sells plug-and-play readers, stands and registers, approved per country, and the setup is designed for non-technical owners. Stripe's readers are pre-certified for Terminal but need an integration before they take a payment. If no one on your team writes code, that difference decides it.

International and multi-currency

Stripe processes payments in 135+ currencies and offers local payment methods such as SEPA Direct Debit, plus settlement in additional currencies. Square accepts cards in eight countries only: the United States, Canada, Australia, Japan, the United Kingdom, Ireland, France and Spain, and an account works only in the country where it was activated. If international customers are on your roadmap, Stripe is the realistic choice. For EU sellers, also check how VAT applies to your sales; our guide to EU VAT for ecommerce covers the thresholds.

Payouts and cash timing

Both pay out on a standard schedule of roughly one to two business days without a fee. Stripe's Instant Payouts cost 1.5% of the payout in the US and 1% in the EU, UK and Canada. Paying 1.5% to get cash a day earlier is expensive money; if you need it often, the real problem is the cash forecast, not the payout speed.

Who should use which

SaaS startup: Stripe. Billing plus Tax covers recurring revenue, dunning and sales tax or VAT calculation. Add Whop only if you want one dashboard instead of an integrated stack.

Ecommerce on Shopify: Use Shopify Payments, which Shopify runs on Stripe's infrastructure in many markets. Add Square only if you open a physical store.

Restaurant or café: Square for Restaurants. Compare Free and Plus on your average ticket size; the plan fee often pays for itself through the lower in-person rate.

Retail store: Square for Retail, with built-in inventory and barcode scanning.

Agency or consultancy: Stripe Invoicing with ACH. The capped bank fee makes large invoices cheap to collect.

Marketplace or platform: Stripe Connect, the standard for splitting payments between a platform and sellers.

Hybrid (online and in person): Square at the counter, Stripe online, both feeding one accounting system such as QuickBooks or Xero.

Our take as fractional CFOs

The most common mistake we see is forcing one processor to do both jobs. A SaaS founder starts on Square because it felt simpler, and six months later rebuilds subscription logic. A café starts on Stripe because a developer friend recommended it, and now pays to maintain a POS it could have had out of the box.

The second mistake is reading the headline rate instead of the effective rate. The number that matters is total processing fees divided by card revenue, measured monthly. Premium and international cards, keyed payments, disputes and instant payouts push it well above the advertised 2.9%. On €5 million of card revenue, every half point is €25,000 a year, which is real money for a business running at a 10% margin.

Here is what we set up for clients:

• Processing fees booked as a cost of revenue line, by channel, so gross and contribution margin reflect them.
• A monthly effective-rate check per processor, with a flag when it moves by more than a quarter of a point.
• B2B clients nudged to bank payment on large invoices.
• Payout timing built into the 13-week cash forecast, so nobody pays for instant payouts to cover a gap that was visible weeks earlier.

Switching processors later is possible, but migrating saved cards and subscriptions is painful. It is one of the few early tooling decisions worth getting right the first time.

Not sure which fits your numbers?

If you want a CFO to look at your channel mix, fees and cash timing and tell you plainly which setup fits, book a free CFO diagnostic call. For subscription businesses, see how we work as a fractional CFO for SaaS.