Choosing the right credit card processor depends on your business model — online vs. in-person, transaction volume, and budget. We break down the top options: Stripe for online businesses, Square for retail and restaurants, Helcim for low fees, PayPal for e-commerce trust, and Clover for full POS hardware.
Every small business needs to accept card payments, but the right processor depends on how you sell. An online store has different needs than a coffee shop or a mobile service business. The wrong choice means paying too much in fees or missing features you actually need.
We looked at the major players — Stripe, Square, Helcim, PayPal, and Clover — across fee structures, hardware options, and ease of use. Here's what we found.
| Processor | Best For | Swiped Rate | Online Rate | Monthly Fee |
|---|---|---|---|---|
| Stripe | Online businesses, developers | — | 2.9% + $0.30 | $0 |
| Square | Retail, restaurants, flat-rate simplicity | 2.6% + $0.10 | 2.9% + $0.30 | $0 |
| Helcim | High-volume, budget-conscious | Interchange + 0.30% + $0.08 | Interchange + 0.50% + $0.25 | $0 |
| PayPal | E-commerce, trusted checkout | — | 2.99% + $0.49 | $0 |
| Clover | Full POS hardware, industry-specific tools | Varies by plan | Varies by plan | $0–$14.95 |
Stripe is the gold standard for online payments. It's built for developers — with a clean API, deep integrations, and support for 135+ currencies — but also works for non-technical users through its dashboard and no-code payment links.1
Pricing is simple: 2.9% + $0.30 per successful card charge online, with no monthly or setup fees. There are volume discounts available for larger businesses, and Stripe's fraud protection (Radar) adds 3–5 cents per transaction.
If you run a SaaS, marketplace, or any business that needs recurring billing, Stripe's subscription management and invoicing tools are best-in-class.
Square is the easiest processor to get started with. No application, no monthly fees, and a free card reader included. It's ideal for retail stores, restaurants, pop-ups, and service businesses that take payments in person.1
Rates: 2.6% + $0.10 for swiped/dipped/tap transactions, 2.9% + $0.30 for online payments. Square also offers a full ecosystem — POS software, inventory management, payroll, and even business loans — all under one login.
For restaurants, Square for Restaurants includes table mapping, menu management, and tip adjustments. For retail, Square for Retail adds purchase orders and vendor management.
Helcim uses interchange-plus pricing, which means you pay the card network's wholesale rate plus a small markup. This is almost always cheaper than flat-rate pricing once you process more than a few thousand dollars per month.1
For swiped transactions: interchange + 0.30% + $0.08. For online: interchange + 0.50% + $0.25. No monthly fees, no cancellation fees, and Helcim lowers its markup automatically as your volume grows.
The trade-off: Helcim's dashboard and integrations aren't as polished as Stripe or Square. It's a better fit if you're comfortable with a slightly more utilitarian interface in exchange for lower costs.
PayPal is everywhere. Over 400 million active users have PayPal accounts, and many shoppers expect it as a checkout option. PayPal Payments Pro lets you accept credit cards, PayPal, Venmo, and buy-now-pay-later options all in one flow.1
Online rate: 2.99% + $0.49 per transaction. It's slightly higher than Stripe, but the conversion lift from PayPal's brand trust can offset the difference for many merchants.
PayPal also offers a business debit card with 1% cash back on purchases, which is a nice bonus for business spending.
Clover is the choice for businesses that need a full point-of-sale system — not just a payment terminal. Their hardware ranges from a simple countertop reader to the full Clover Station with a customer-facing display, receipt printer, and barcode scanner.1
Pricing varies by plan and hardware. Monthly software fees range from $0 to $14.95, and transaction rates depend on your processor agreement. Clover's strength is in vertical-specific tools: restaurants get menu modifiers and table management, retail gets inventory and employee management.
The downside: Clover locks you into its hardware ecosystem, and some plans have early termination fees. Read the fine print before signing.
Flat-rate vs. interchange-plus. Flat-rate (Square, Stripe) is simpler — one percentage, no surprises. Interchange-plus (Helcim) is cheaper at higher volumes but harder to predict month-to-month. If you process under $5,000/month, flat-rate wins. Above that, interchange-plus saves you money.1
Hardware needs. If you take payments in person, check whether the processor includes a free reader (Square does) or charges for terminals (Clover). Also consider whether you need a full POS system or just a payment button.
Hidden fees. Watch for monthly minimums, PCI compliance fees, chargeback fees, and early termination fees. Square and Stripe are the most transparent — no hidden charges. Clover and some PayPal plans can have surprise costs.1
Integrations. If you use Shopify, WooCommerce, QuickBooks, or other software, make sure your processor integrates natively. Stripe and Square have the widest integration ecosystems.
There's no single best processor — it depends on your business. Start with Square if you're a retail or restaurant taking in-person payments. Choose Stripe if you're online-first and need developer tools. Go with Helcim if volume is high and every basis point matters. Add PayPal as a checkout option for trust. And pick Clover if you need a full POS hardware setup.
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