Best flat-rate payment processors

Flat-rate pricing charges one predictable percentage (plus a fixed fee) on every sale, with no monthly minimums, which makes it the simplest model for new and low-volume businesses. These processors use flat-rate pricing.

28 processors

Stripe logo

Stripe

Verified
Sponsored

Developer-first payments infrastructure for internet businesses.

2.9% + $0.30

online rate

$0

monthly fee

2-day

payout

Developers
SaaS
Marketplaces
Rated 4.5 out of 5 from 4 reviews.
Razorpay logo

Razorpay

Verified
Sponsored

India's developer-friendly payments and business banking suite.

2%

online rate

₹0

monthly fee

T+2

payout

India
Developers
UPI
Rated 4.5 out of 5 from 4 reviews.
Square logo

Square

Verified

All-in-one point of sale and payments for in-person businesses.

2.9% + $0.30

online rate

$0

monthly fee

Next day

payout

Retail
Restaurants
Small business
Rated 4.5 out of 5 from 4 reviews.
Braintree logo

Braintree

Verified

A PayPal company offering developer-friendly online payments.

2.89% + $0.29

online rate

$0

monthly fee

2-day

payout

Developers
SaaS
PayPal users
Rated 4.5 out of 5 from 4 reviews.

The widely recognised wallet and checkout button merchants trust.

2.99% + $0.49

online rate

$0

monthly fee

Instant

payout

Small business
Cross-border
Quick setup
Rated 4.5 out of 5 from 4 reviews.

Emerging-market payments across more than 50 markets and local methods.

2% to 3% (by market)

online rate

Varies

monthly fee

Varies

payout

Emerging markets
Cross-border
High-risk
Rated 4.5 out of 5 from 4 reviews.

A long-established payment gateway for online and MOTO payments.

2.9% + $0.30

online rate

$25

monthly fee

Varies

payout

Traditional businesses
MOTO
Virtual terminal
Rated 4.5 out of 5 from 4 reviews.
SumUp logo
No reviews

Card readers and payments for over 4 million small businesses in 36 markets, with no monthly fees on the standard plan.

3.5% + $0.15 US, 2.5% UK

online rate

$0 standard

monthly fee

Next day

payout

Mobile and market sellers
Cafes and salons
Trades
+1
Paystack logo
No reviews

Stripe-owned African payment platform serving 200,000+ businesses in Nigeria, Ghana, Kenya, South Africa and Cote d'Ivoire.

1.5% + NGN 100, capped

online rate

None

monthly fee

Next day

payout

African ecommerce
Mobile money acceptance
Developer integrations
+1
Paddle logo
No reviews

Merchant of record for software companies: one 5% + $0.50 fee covers payments, global sales tax, billing, fraud and chargeback liability.

5% + $0.50

online rate

None

monthly fee

Varies

payout

SaaS
Consumer software
Game developers
+1
Mollie logo
No reviews

European payment service provider with published per-transaction pricing, deep local method coverage and no monthly fee for online payments.

1.8% + EUR 0.25

online rate

EUR 0 online

monthly fee

Varies

payout

European ecommerce
Small business
Marketplaces
+1
GoCardless logo
No reviews

Bank payment specialist collecting Direct Debit and open banking payments in 30+ countries, with capped per-transaction fees and no monthly cost.

No card payments

online rate

None

monthly fee

Varies

payout

Recurring billing
Invoice collection
Memberships and clubs
+1

Frequently asked questions

Who should use flat-rate pricing?
Flat-rate suits new stores, low or unpredictable volume, and anyone who values simple, predictable costs over squeezing out the lowest possible rate. As volume grows, interchange-plus often becomes cheaper.

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