Best All-in-One Payment Platforms (Processing + Invoicing + Recurring)
An all-in-one payments platform replaces what used to be four separate vendors: a processor, a gateway, an invoicing tool, and a recurring billing system. The tradeoff is depth versus simplicity — an all-in-one rarely matches a specialist (Recurly for subscriptions, Authorize.net for gateway-only) on any single dimension, but it usually wins on total cost of ownership and operational sanity for SMBs who don't need specialist depth.
- 1Square7.7/10
Free POS plus flat-rate processing — popular but rarely the cheapest.
Pricing: 2.6% + 10¢ (in-person)Contract: month-to-month✓ Free POS, free reader, no monthly fee, no contract✗ Flat-rate is expensive past ~$10–15K/mo in card volume - 2Stripe8/10
Developer-first online payments with transparent flat-rate pricing.
Pricing: 2.9% + 30¢ (online)Contract: month-to-month✓ Best-in-class developer documentation and APIs✗ Flat-rate is expensive once you cross ~$15K/mo in volume - 3Helcim8.7/10
Interchange-plus pricing with no monthly fee — best-kept secret in SMB processing.
Pricing: Interchange + 0.4% + 8¢ (in-person)Contract: month-to-month✓ Interchange-plus pricing with PUBLIC rates — extremely rare✗ Smaller hardware lineup than Square or Clover - 4Shopify Payments7.2/10
Bundled with Shopify storefronts — penalty fees if you use anything else.
Pricing: 2.4%–2.9% + 30¢ (online, varies by plan)Contract: month-to-month✓ Native to Shopify — zero setup friction✗ Effectively forced — third-party processors get penalty surcharge - 5
Bundled with QuickBooks — convenient but seldom the cheapest.
Pricing: 2.5% + 25¢ (in-person), 2.99% + 25¢ (invoice)Contract: month-to-month✓ Auto-reconciliation in QuickBooks — biggest time-saver✗ 2.99% invoice rate is among the highest published rates - 6PayPal (Braintree)6.5/10
Ubiquitous checkout — convenience at a premium rate.
Pricing: 3.49% + 49¢ (PayPal Checkout)Contract: month-to-month✓ Trusted brand boosts checkout conversion✗ 3.49% + 49¢ standard rate is the highest among major processors - 7QuickBooks Payments7.3/10
Native invoicing payments for QuickBooks users — strong fit, premium pricing.
Pricing: 2.99% (invoiced) / 1% ACH (capped at $10)Contract: month-to-month✓ Best-in-class QuickBooks integration✗ 2.99% rate is expensive for high-volume merchants
Bottom line
Square wins for in-person-led businesses (retail, food, services) that also need invoicing and online checkout. Stripe wins for online-led businesses adding in-person via Stripe Terminal. Helcim is the underrated all-in-one for SMBs that want interchange-plus pricing across every channel — the only platform on this list that's not flat-rate. QuickBooks Payments wins specifically for QuickBooks-native shops where reconciliation matters more than the rate.
Head-to-head comparisons
Direct comparisons between the top-ranked processors on this list.
Fees that affect this category
Definitions, typical ranges, and how to negotiate them.
- ACH vs Credit Card Processing$0.25 to $1.50 per ACH (or 0.5%–1% capped)
- MOTO / Keyed-Entry Surcharge+30 to +80 basis points over card-present interchange
- Effective Rate1.80% (best-case low-risk) to 4.00%+ (poorly-priced tiered)
- Monthly Fee$0 (Stripe/Square/Helcim) to $199 (high-tier subscription like Stax)
- Interchange Downgrades0.20%–0.80% extra cost per downgraded transaction