ComparePSP

Best Payment Gateway for Small Business (2026)

Compare the top payment gateways for small businesses in 2026. We rank them by fees, ease of use, POS hardware, and all-in-one features.

What to Look For

  • Low transaction fees
  • No monthly fees
  • Easy setup
  • POS hardware options
  • Invoicing
  • All-in-one solution

Top Picks at a Glance

#ProviderRatingTransaction FeeMonthly FeeBest For
1Square logoSquare4.32.6% + $0.10 (in-person) / 2.9% + $0.30 (online)$0 (Free) / $29 (Plus) / $79 (Premium)Best for small businesses needing an all-in-one POS and payment solution
2Stripe logoStripe4.62.9% + $0.30$0Best for developer-first companies building custom payment experiences
3PayPal logoPayPal4.02.99% + $0.49$0 (standard) / $30 (Pro)Best for businesses wanting instant brand recognition and buyer trust
4Mollie logoMollie4.2€0.25 + scheme rate (1.8% EU / 2.8% non-EU cards)$0Best for European small businesses seeking easy setup and local payment methods

Full Rankings

#1
Square logo

Square

4.3
4.3 / 5.0

Transaction fee: 2.6% + $0.10 (in-person) / 2.9% + $0.30 (online)

Why it's good

Square is the best overall payment gateway for small businesses. It offers a free card reader, no monthly fees on the basic plan, flat-rate pricing (2.6% + $0.10 in person, 2.9% + $0.30 online), and a complete suite of business tools including POS, invoicing, appointments, payroll, inventory management, and even a free online store. Setup takes minutes — sign up, plug in the reader, and start accepting payments. Square is purpose-built for small businesses and it shows.

Why it might not be

Square operates in only 6 countries, so it is not an option for businesses outside the US, Canada, UK, Australia, Japan, or Ireland. Its flat-rate pricing can become expensive at higher volumes compared to interchange-plus providers. Account stability issues — Square has been known to freeze funds or terminate accounts without warning for businesses it deems high-risk.

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#2
Stripe logo

Stripe

4.6
4.6 / 5.0

Transaction fee: 2.9% + $0.30

Why it's good

Stripe offers powerful payment processing with transparent flat-rate pricing (2.9% + $0.30 online), excellent no-code tools like Payment Links and hosted Checkout, and the flexibility to grow with your business from first sale to millions in revenue. Its invoicing tool is solid, and it supports 135+ currencies for businesses with international customers. Stripe is the best choice for small businesses that sell primarily online.

Why it might not be

Stripe's full power requires developer resources, which many small businesses do not have. Its POS hardware options (Stripe Terminal) are limited compared to Square. The dashboard can feel overwhelming for non-technical business owners. Customer support on standard plans is email and chat only — no phone support.

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#3
PayPal logo

PayPal

4.0
4.0 / 5.0

Transaction fee: 2.99% + $0.49

Why it's good

PayPal offers instant brand recognition that builds customer trust at checkout, no-code payment buttons and invoicing that work without any technical skills, and the ability to receive payments from 200+ countries. For small businesses that need to accept payments quickly with zero setup complexity, PayPal is hard to beat. Its Venmo integration is also valuable for US-based businesses targeting younger consumers.

Why it might not be

PayPal's fees are higher than competitors — 2.99% + $0.49 for card processing and 3.49% + $0.49 for PayPal-branded checkout. The fee structure is confusing with many different rates depending on payment type. PayPal is known for holding funds and freezing accounts, which can be devastating for cash-strapped small businesses. Customer support quality is inconsistent.

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#4
Mollie logo

Mollie

4.2
4.2 / 5.0

Transaction fee: €0.25 + scheme rate (1.8% EU / 2.8% non-EU cards)

Why it's good

Mollie is an excellent choice for European small businesses. It charges no monthly fees, offers competitive transaction pricing (especially for local methods like iDEAL at €0.29 flat), and is known for its simple 15-minute setup. Its plugins for WooCommerce, Shopify, Magento, and PrestaShop are well-maintained. Mollie also provides responsive customer support in multiple European languages, which is rare among payment processors.

Why it might not be

Mollie only serves European businesses, so it is not an option for merchants in the US, Asia, or other regions. It lacks the breadth of business tools that Square offers — no POS hardware, no appointment scheduling, no payroll. Its product range is focused on payment processing rather than being an all-in-one business platform.

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Choosing the right payment gateway is one of the most important decisions a small business owner makes. The wrong choice can mean overpaying on transaction fees, wrestling with complicated integrations, or losing sales because customers cannot pay the way they want. Small businesses have unique needs that differ from enterprise companies. You likely need low transaction fees that do not eat into thin margins, transparent pricing without hidden costs or long-term contracts, and an easy setup process that does not require hiring a developer. Many small businesses also need point-of-sale hardware for accepting payments in person — at a shop counter, farmers market, or on-site service call. Invoicing capabilities, inventory management, and the ability to accept multiple payment methods (cards, digital wallets, bank transfers) are often essential. The best payment gateway for a small business should be an all-in-one solution that handles payments, basic accounting, and customer management without requiring a patchwork of separate tools. We evaluated the leading payment processors on the criteria that matter most to small businesses: transaction fees, monthly costs, ease of getting started, POS hardware options, invoicing features, and how well each platform serves as a complete business tool rather than just a payment processor.

Related Resources

Provider

Square

Provider

Stripe

Provider

PayPal

Provider

Mollie

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PayPal vs Adyen

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PayPal vs Klarna

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PayPal vs Square

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Razorpay vs Stripe

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Square vs Authorize.net

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Square vs Mollie

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Stripe vs 2Checkout (Verifone)

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Stripe vs Adyen

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Stripe vs Authorize.net

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Stripe vs Braintree

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Stripe vs Checkout.com

Comparison

Stripe vs Mollie

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Stripe vs PayPal

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Stripe vs Recurly

Comparison

Stripe vs Square

Comparison

Wise (TransferWise) vs PayPal

Method

Visa / Mastercard

Method

American Express

Method

Apple Pay

Method

Google Pay

Method

ACH

Method

SEPA

Method

iDEAL

Method

Bancontact

Method

Sofort (Klarna)

Method

Giropay

Method

Alipay

Method

WeChat Pay

Method

Klarna (Buy Now, Pay Later)

Method

Affirm

Method

Afterpay (Block)

Method

EPS

Method

Przelewy24

Method

BLIK

Method

Multibanco

Method

Paysafecard

Frequently Asked Questions

What is the cheapest payment gateway for small businesses?
Square offers some of the lowest effective costs for small businesses: 2.6% + $0.10 for in-person payments with a free card reader and no monthly fees. For European businesses, Mollie is very competitive with fixed fees for local payment methods (e.g., €0.29 for iDEAL). Stripe and PayPal both charge around 2.9% + $0.30 for online payments, but PayPal's additional fees for branded checkout make it the most expensive option overall.
Do I need a developer to set up a payment gateway?
No. Square, PayPal, and Mollie all offer no-code solutions that you can set up in minutes. Square gives you POS hardware that works out of the box. PayPal offers payment buttons and invoicing with no coding. Mollie has plug-and-play plugins for popular ecommerce platforms. Stripe also has no-code Payment Links but its more advanced features do require development resources.
Should I choose a payment gateway with no monthly fee?
For most small businesses, yes. Square, Stripe, PayPal, and Mollie all offer plans with no monthly fees — you only pay per transaction. This is ideal when your volume is unpredictable. Gateways that charge monthly fees (like some Adyen or Checkout.com plans) are typically designed for higher-volume merchants where the lower per-transaction cost offsets the fixed monthly charge.
Can I accept both online and in-person payments with one provider?
Yes. Square is the best option for this, with integrated POS hardware and an online store that share the same inventory and reporting. Stripe also supports both through Stripe Terminal for in-person and its online payment tools, though with fewer hardware options. PayPal offers Zettle for in-person payments alongside its online tools, but the two systems are not as tightly integrated.
What payment methods should a small business accept?
At minimum, accept major credit and debit cards (Visa, Mastercard, American Express) and a digital wallet (Apple Pay, Google Pay). In Europe, adding local methods like iDEAL, Bancontact, or SEPA Direct Debit is important. In the US, supporting Venmo or PayPal can capture additional sales. The more payment methods you offer, the fewer customers you lose at checkout — but focus on the methods your specific customer base actually uses.