Visibility in this ranking can be paid for. Payment moves a vendor's position within the
shortlist; it never adds a vendor, and it never changes a word of the review. The largest vendors in payment processing software
cannot hold places 1 to 3. Places 1 to 3 go to challengers, vendors outside the best-known brands in a category,
wherever the category has them; the established names follow from place 4 in their ranked order. How it works: placement disclosure ·
editorial process.
The 15 tools, reviewed
#1 Mollie
Transparent European payments, no lock-in contract · Netherlands · mollie.com
No lock-in contract Strong EU payment-method coverage Regulated by DNB
Mollie built its reputation on doing the basics honestly: published per-method rates with no minimum monthly cost and no lock-in contract, at a time when several larger competitors on this list require a sales call before a small business can see a real number.
- Pricing: Usage-based. Pay-as-you-go per-method transaction fees, for example 1.80% + EUR0.25 for EEA Visa consumer cards. Free plan: none.
- Best for: European SMBs and SaaS businesses selling online
- Strengths: Online checkout; iDEAL, Bancontact and local methods; Recurring payments.
Where it falls short
It has less enterprise-grade depth and global reach than Stripe or Adyen, and a business selling primarily outside Europe will find its local-method advantage largely irrelevant.
Wrong for
A large enterprise needing negotiated volume-based rates and dedicated account management, or a business selling mainly outside Europe, will get more from Stripe or Adyen than from Mollie's European-first design.
Visit Mollie →
#2 Razorpay
Flat 2% domestic payments, built for India · India · razorpay.com
Flat 2% domestic rate India-first payment coverage Pre-IPO structure
Razorpay is the dominant payment gateway for Indian D2C brands, SaaS companies and startups, with deep coverage of India-specific payment methods, UPI, netbanking and local wallets, that global processors typically support only partially.
- Pricing: Usage-based. 2% per successful domestic transaction on most payment instruments, no setup fee, no annual maintenance charge, no refund-processing fee. Free plan: none.
- Best for: India-based D2C, SaaS and startup businesses
- Strengths: UPI, cards, netbanking and wallets; Payment links and pages; Recurring payments.
Where it falls short
Its relevance drops sharply outside India and South Asia, where its payment-method coverage and local banking relationships do not apply, and the flat 2% has exceptions: corporate cards cost 2.15%, international cards up to 3%, and enterprise volume needs a custom quote.
Wrong for
A business with no operations or customer base in India or South Asia should choose Stripe, Adyen or Mollie instead.
Visit Razorpay →
#3 Paddle
Merchant of record for SaaS and software sellers · United Kingdom · paddle.com
Merchant of record Handles global VAT/sales tax All-inclusive rate
Paddle takes on the legal role of merchant of record for the software sellers using it, meaning Paddle itself, not the seller, is responsible for collecting and remitting sales tax and VAT across every jurisdiction a customer might be in, along with owning fraud and chargeback liability.
- Pricing: Usage-based. 5% + $0.50 per checkout transaction, all-inclusive: covers payment processing, global sales-tax and VAT compliance and remittance, fraud protection, and support. Free plan: none.
- Best for: Cross-border SaaS and software companies
- Strengths: Merchant-of-record checkout; Global sales tax and VAT remittance; Subscription billing.
Where it falls short
At 5% plus $0.50 per transaction, its rate runs well above Stripe's or Adyen's standard card-processing fees, a real cost that only makes sense once the value of offloaded tax compliance is counted.
Wrong for
A physical-goods retailer cannot use Paddle at all, since its policy excludes physical products, and a software seller with customers in only one or two tax jurisdictions will find the rate hard to justify against a standard gateway.
Visit Paddle →
#4 Stripe
Developer-first payments, instant self-serve signup · United States · stripe.com
Developer-first API Instant self-serve signup Broadest ecosystem and docs
Stripe built the developer experience this entire category is now judged against: clear published pricing, instant self-serve signup, and documentation extensive enough that a solo developer and a large enterprise integration team both find what they need.
- Pricing: Usage-based. 1.5% + EUR0.25 for standard EEA cards, higher for UK and international cards, per Stripe's published Netherlands rate card. Free plan: none.
- Best for: Developer-led SaaS, marketplaces and online stores
- Strengths: Payments API and Checkout; Billing and subscriptions; Global payment methods.
Where it falls short
In-person and point-of-sale hardware is considerably less mature than Square's, so a business needing both online and physical retail payments in one product may find the in-person side underdeveloped.
Wrong for
A retail or restaurant business needing mature, integrated point-of-sale hardware alongside online payments will get a more complete experience from Square than from Stripe's online-first design.
Visit Stripe →
#5 Adyen
Enterprise-grade single platform, negotiated pricing · Netherlands · adyen.com
Publicly traded (Euronext) Negotiated enterprise rates Single global platform
Adyen runs payments on one platform end to end, acquiring, processing and settlement, rather than stitching together partners the way some competitors do, and that architecture is a real reason enterprise-scale clients like Uber, Spotify and eBay have standardized on it.
- Pricing: Usage-based. Interchange++ model, a $0.13 fixed processing fee plus a method-specific variable fee, per Adyen's published pricing page. Free plan: none.
- Best for: Large, high-volume global enterprises
- Strengths: Unified commerce platform; In-person and online in one system; Global acquiring.
Where it falls short
Onboarding is sales-assisted rather than self-serve, and the published fees are indicative, with a minimum invoice that depends on the business, which makes it a poor fit for a small business wanting to see a number before talking to anyone.
Wrong for
A small business wanting instant self-serve signup and a published rate without a sales conversation should choose Stripe or Mollie instead of Adyen's enterprise-oriented onboarding.
Visit Adyen →
#6 PayPal Business
The most recognized checkout button for buyers · United States · paypal.com
Highest consumer brand trust Instant self-serve signup Owns Braintree and Venmo
PayPal remains the checkout option most consumers recognize and trust on sight, which measurably reduces cart abandonment for some businesses even when it is not the cheapest option available, and instant self-serve signup makes it one of the fastest ways for a very small business to start accepting payments today.
- Pricing: Usage-based. 3.49% + $0.49 standard PayPal Checkout rate in the US, per PayPal's published fee page. Free plan: none.
- Best for: SMBs prioritizing buyer trust at checkout
- Strengths: PayPal Checkout button; Invoicing; Venmo acceptance (US).
Where it falls short
Its 3.49% + $0.49 standard rate runs noticeably higher than Stripe's or Adyen's per-transaction cost, a real premium that only pays for itself if the brand-trust effect on conversion is genuine for a given business.
Wrong for
A high-volume business highly sensitive to per-transaction cost, without a specific need for PayPal's consumer brand recognition at checkout, will pay less with Stripe, Adyen or Mollie.
Visit PayPal Business →
#7 PayPal Enterprise Payments (Braintree)
Braintree, rebranded and folded into PayPal · United States · paypal.com
Rebranded PayPal Enterprise Payments (2025) Flexible developer SDKs Owned by PayPal since 2013
This product built its reputation as Braintree, historically popular with marketplaces and subscription platforms for its flexible SDKs and card vaulting, before PayPal's own site began describing it as "PayPal Enterprise Payments" and redirecting the old braintreepayments.com domain entirely to paypal.com.
- Pricing: Usage-based. 2.89% + $0.29 per transaction standard. Free plan: none.
- Best for: Marketplaces and subscription platforms wanting flexible SDKs
- Strengths: Vaulted card tokenization; Marketplace split payments; Subscription billing.
Where it falls short
Its standalone marketing identity has effectively disappeared into PayPal's own branding, which makes it harder to evaluate as a distinct product from PayPal Business itself without digging into PayPal's enterprise sales materials directly.
Wrong for
A business wanting to evaluate a genuinely independent processor, separate from PayPal's brand and roadmap, should compare Stripe, Adyen or Checkout.com instead.
Visit PayPal Enterprise Payments (Braintree) →
#8 Square
Integrated in-person and online payments · United States · squareup.com
Free POS software tier Best-in-class in-person hardware Owns Afterpay
Square is best known for integrated point-of-sale hardware and software that a retail store or restaurant can set up in an afternoon, and it is one of the few vendors in this category with a genuinely free software tier, not just no monthly fee to start, covering basic POS, an online site builder and invoicing at no cost beyond per-transaction processing.
- Pricing: Usage-based. Square Free costs $0 a month per location and includes basic POS, an online site, item library and invoicing, paid for through processing fees. Free plan: free plan.
- Best for: Hybrid online and brick-and-mortar sellers
- Strengths: Point-of-sale hardware and software; Online store builder; Invoicing.
Where it falls short
Its online-only checkout and developer API are less mature than Stripe's for a business that is primarily an online store or SaaS product without a physical retail component.
Wrong for
A purely online business or SaaS company with no physical retail component gets more from Stripe's or Adyen's deeper online and developer tooling than from Square's in-person-first design.
Visit Square →
#9 Worldpay
Legacy global acquirer, now part of Global Payments · United States · worldpay.com
Now owned by Global Payments (Jan 2026) Legacy global acquirer Omnichannel enterprise retail
Worldpay is one of the largest and longest-established global payment acquirers, historically strong with omnichannel enterprise retailers running both in-store and online payments through one relationship.
- Pricing: Quote only. Quote-only enterprise acquiring model; no published self-serve rate card. Free plan: none.
- Best for: Large omnichannel retail and enterprise merchants
- Strengths: Global card acquiring; Omnichannel payment orchestration; Fraud and risk management.
Where it falls short
Pricing is entirely quote-only with a sales-led, document-heavy onboarding process, a poor fit for a small business wanting to see a number and start processing the same day.
Wrong for
A small or newly formed business wanting fast self-serve signup and published pricing should choose Stripe, Mollie or PayPal Business instead of Worldpay's enterprise-oriented, quote-only process.
Visit Worldpay →
#10 Checkout.com
Enterprise-grade processing on owned infrastructure · United Kingdom · checkout.com
Enterprise clients (Netflix, Uber Eats) Owns its own processing infrastructure Valuation cut from $40B to ~$12B
Checkout.com built and owns its processing infrastructure rather than reselling a third party's rails, which large clients like Netflix, eBay, Uber Eats and Pinterest have valued for the control and reliability that ownership gives over the full payment flow.
- Pricing: Quote only. Offers either a flat-rate or an Interchange++ option depending on business profile and risk category, explicitly quote-only. Free plan: none.
- Best for: Large enterprise merchants with global volume
- Strengths: Global card acquiring; Owned processing infrastructure; Flexible payment orchestration.
Where it falls short
There is no self-serve signup or published rate card; every quote requires a sales conversation and a business profile and risk-category assessment first, which is slow for a smaller merchant.
Wrong for
A small business wanting instant self-serve signup and a published rate should choose Stripe or Mollie.
Visit Checkout.com →
#11 GoCardless
Bank-to-bank Direct Debit for recurring payments · United Kingdom · gocardless.com
Bank Direct Debit, not cards Reduces recurring-payment churn FCA-authorized
GoCardless solves a specific, narrower problem than the card processors in this ranking: collecting recurring payments by pulling directly from a customer's bank account rather than charging a card, which measurably reduces the involuntary churn that comes from expired or declined cards on a subscription.
- Pricing: Usage-based. Tiered percentage plus fixed fee per transaction: Standard 1% + 20p capped at GBP4, Advanced 1.25% + 20p capped at GBP5, Pro 1.4% + 20p capped at GBP5.60. Free plan: none.
- Best for: Businesses collecting recurring invoices or subscriptions
- Strengths: Direct Debit collection; Recurring payment scheduling; Failure and retry management.
Where it falls short
It is not a general card-acceptance gateway and cannot process one-off card payments the way Stripe or Adyen can, so it is almost never a business's only payment method.
Wrong for
A business needing to accept one-off card payments from new customers, rather than collecting recurring invoices or subscriptions from known customers, needs a card processor like Stripe or Mollie instead.
Visit GoCardless →
#12 Authorize.net
Long-established gateway, owned by Visa · United States · authorize.net
Owned by Visa (via CyberSource) Standing $25/month gateway fee Est. 1996
Authorize.net dates to 1996, making it one of the oldest payment gateways still in active use, and Visa has owned it since its 2010 acquisition of parent company CyberSource for $2 billion, keeping it and CyberSource as separate branded services rather than merging them.
- Pricing: Flat monthly / usage-based. $25/month gateway fee on all plans, plus per-transaction fees: All-in-one 2.9% + 30 cents. Free plan: none.
- Best for: Businesses layering a gateway on a separate merchant account
- Strengths: Payment gateway API; Recurring billing; eCheck/ACH acceptance.
Where it falls short
The standing $25 monthly gateway fee, charged regardless of transaction volume, is a genuine and unusual cost in a category most competitors have moved away from charging at all.
Wrong for
A very low-volume or seasonal business will find the standing $25 monthly fee a real drag on cost-per-transaction compared with Stripe's, Mollie's or Square's no-monthly-fee structures.
Visit Authorize.net →
#13 Payoneer
Cross-border payouts for freelancers and sellers · United States · payoneer.com
Cross-border payouts, not card acceptance Publicly traded (NASDAQ: PAYO) Popular with Amazon/Upwork sellers
Payoneer solves a different problem than the rest of this ranking: receiving cross-border payouts, from marketplaces like Amazon and Upwork, from B2B clients, or from other platforms, into local currency accounts a freelancer or seller can withdraw from cheaply, rather than accepting card payments from customers at checkout.
- Pricing: Usage-based. No monthly subscription for a standard account. Free plan: none.
- Best for: Freelancers and marketplace sellers receiving international payouts
- Strengths: Marketplace payout receiving; Multi-currency receiving accounts; Local bank withdrawal.
Where it falls short
It does not process card payments from a company's own customers, so it is not a substitute for a checkout gateway like Stripe or Mollie for a business that sells directly to consumers.
Wrong for
A business needing to accept card payments directly from its own customers at checkout needs a processor like Stripe or Mollie.
Visit Payoneer →
#14 Klarna
Buy-now-pay-later checkout, newly public · Sweden · klarna.com
Newly public (NYSE: KLAR, Sept 2025) Buy-now-pay-later specialist Swedish banking entity
Klarna is primarily a buy-now-pay-later and checkout-financing provider, letting a customer split a purchase into installments rather than pay the full card amount upfront, a feature that measurably lifts conversion for many e-commerce merchants when offered as one option among several at checkout.
- Pricing: Quote only. Merchant pricing is quote-only, negotiated per merchant through a sign-up portal or sales contact. Free plan: none.
- Best for: E-commerce merchants wanting BNPL conversion lift
- Strengths: Pay-in-4 installments; Financing checkout options; Klarna app shopping integration.
Where it falls short
Merchant pricing is entirely quote-only with no published rate card, making an early cost comparison difficult.
Wrong for
A business wanting a single, general-purpose card processor rather than an added installment-financing option should choose Stripe, Adyen or Mollie instead of evaluating Klarna as a standalone processor.
Visit Klarna →
#15 BlueSnap
All-in-one global payments, now under Payroc · United States · bluesnap.com
Now under Payroc Multi-currency PSP + acquiring SaaS and subscription focus
BlueSnap positions itself as an all-in-one global payment platform for SaaS and subscription merchants, combining a payment service provider and regional acquiring into one contract rather than requiring a business to stitch a gateway and a separate acquirer together itself.
- Pricing: Usage-based. Quick Start pay-as-you-go rates by region, for example 2.9% + $0.30 per successful card transaction in the US and 1.5% + EUR0.25 in the EU, not available to high-risk merchants. Free plan: none.
- Best for: Mid-market SaaS wanting one payments contract
- Strengths: Global payment orchestration; Subscription billing; Multi-currency and multi-region acquiring.
Where it falls short
Its published Quick Start rates exclude high-risk merchants, and monthly, chargeback and currency-conversion fees are not on the pricing page, so a full cost comparison still needs a sales consultation and a region-specific agreement.
Wrong for
A small business wanting instant self-serve signup and a complete published fee schedule should choose Stripe or Mollie instead of BlueSnap's consultation-led, region-by-region onboarding.
Visit BlueSnap →
Questions and answers
What is the best payment processing software in 2026?
Mollie ranks first of 15, best for european SMBs and SaaS businesses selling online. Razorpay is second (india-based D2C, SaaS and startup businesses) and Paddle third (cross-border SaaS and software companies). Places 1 to 3 go to challengers, vendors outside the best-known brands, wherever the category has them.
Why don't most payment processors have a free plan?
Because the business model itself is usage-based rather than subscription-based: most processors in this category, Stripe, Adyen, PayPal Business, Mollie and Razorpay among them, charge no monthly software fee at all and instead take a percentage plus a fixed fee only when a transaction actually happens, which functions like a free plan in that there is no cost to sign up and no charge until money moves.
What happened to Worldpay's ownership?
Global Payments completed its acquisition of Worldpay on January 12, 2026, simultaneously divesting its own Issuer Solutions business to FIS as part of the same transaction.
What is the difference between Stripe and Adyen?
Both charge a percentage plus a fixed fee per transaction with no monthly account fee, but they target different buyers.
Is Braintree still a separate product from PayPal?
Not in its marketing or branding. PayPal has rebranded Braintree as "PayPal Enterprise Payments," and Braintree's old standalone website, braintreepayments.com, now redirects entirely to paypal.com.
What is the difference between a card processor and GoCardless?
A card processor like Stripe or Adyen moves money by charging a customer's debit or credit card at the moment of a sale.
What does 'merchant of record' mean, and why does Paddle charge more?
A merchant of record is the legal entity that actually sells a product to the end customer and is responsible for collecting and remitting sales tax and VAT across every jurisdiction a customer might be in, rather than leaving that compliance burden to the seller.
Is Klarna a payment processor or something else?
Klarna is primarily a buy-now-pay-later and checkout-financing provider, letting a customer split a purchase into installments rather than paying the full card amount upfront, and it also runs a broader checkout suite around that core product.
Why is Authorize.net's pricing different from the rest of this list?
It is one of the oldest payment gateways still operating, dating to 1996, and it retains a genuine standing monthly gateway fee, $25 a month across all its plans, on top of per-transaction pricing, a structure most competitors in this category dropped years ago in favor of pure per-transaction pricing.
Can a very small or new business actually get approved by these providers?
Stripe, Mollie, PayPal Business, Square and Razorpay (for India-based businesses) all offer instant or near-instant self-serve approval for a standard small business, with underwriting happening in the background rather than blocking a first transaction.
How often is this payment processing ranking updated?
Whenever a fact underneath it changes: an ownership change like Global Payments completing its acquisition of Worldpay, a status change like Klarna's 2025 IPO, or a rebrand like Braintree becoming PayPal Enterprise Payments.
