Payment processors for SaaS and digital products

For most SaaS founders, start with Stripe. It is the payment layer in the Trackk formula because it is the dominant infrastructure provider for internet payments: mature APIs, Checkout, Billing, Tax, invoices, subscriptions, trials, coupons, usage-based billing, Connect, reporting, and broad ecosystem support.

Stripe is also operating at a scale that few payment companies can match. Stripe reported that businesses on Stripe generated $1.9 trillion in total volume in 2025, equivalent to 1.6% of global GDP. That scale tends to show up in stronger tooling, deeper edge-case handling, more payment methods, better documentation, and more examples for founders and developers to build from.

The caveat is that Stripe is a payment processor, not a Merchant of Record in the standard setup. If you need another company to be the legal seller, collect and remit VAT, GST, and sales tax, and simplify international digital product compliance, then Creem, Dodo Payments, Paddle, Polar, or Lemon Squeezy may be worth the higher percentage fee.

A payment processor helps you accept money. You are still usually the seller of record, which means you own pricing, refunds, customer relationship, tax obligations, and compliance decisions. Stripe is the classic default here, although it also has additional products for billing, tax, marketplaces, and managed payment workflows.

A Merchant of Record, often shortened to MoR, becomes the legal seller for the transaction. The MoR handles tax calculation, collection, filing, invoices, payment risk, and often more of the checkout and billing workflow. That is why MoR pricing is usually higher than raw card processing.

The founder tradeoff is control versus convenience. Stripe gives you more control and usually lower headline processing cost. MoR platforms charge more, but can remove a painful tax and compliance layer for global software, templates, courses, AI tools, and digital products.

These prices are a public snapshot checked on May 30, 2026. They simplify a messy real-world cost model, so always confirm your country, card mix, international fee exposure, payout currency, subscription add-ons, tax product, dispute fees, and volume pricing before making a final decision.

The useful first split is not old versus new. It is processor versus Merchant of Record. Stripe is the default processor and platform. The newer providers are mostly competing by bundling payment processing, tax compliance, subscriptions, checkout, and creator-friendly workflows into one transaction fee.

This model assumes 50 customers on a $29 per month SaaS plan, one successful card transaction per customer per month, and $1,450 in gross monthly revenue. It excludes refunds, chargebacks, failed payments, international card surcharges, FX, taxes charged to the buyer, payout fees, and custom pricing.

The Stripe row uses only the base online card processing fee so you can see the processor baseline. If you use Stripe Billing for subscription management, add 0.7% of billing volume, which would be another $10.15 in this 50-customer model. Stripe Tax can add more where it is enabled and you are registered to collect tax.

This model assumes 500 customers on the same $29 per month SaaS plan, one successful card transaction per customer per month, and $14,500 in gross monthly revenue. At this level, the same small percentage differences become meaningful, but so do tax, billing automation, failed-payment recovery, reporting, and support quality.

For Stripe, the base processing estimate is $570.50. If you also use Stripe Billing at 0.7%, add $101.50, bringing payments plus Billing to $672.00 before any Stripe Tax, international, FX, dispute, or payout effects.

Stripe is recommended because it gives a SaaS founder the longest runway. You can start with Checkout or Payment Links, add subscriptions with Stripe Billing, add trials and coupons, connect webhooks to your app database, add Stripe Tax, use Customer Portal, reconcile revenue, and later move into usage-based billing, invoices, enterprise deals, or marketplace flows.

That matters in Trackk because payments are not just a payment page. Payments connect to pricing validation, activation, customer conversion, MRR reporting, churn, failed-payment recovery, tax posture, revenue operations, and launch readiness. Stripe has the broadest set of building blocks for that whole path.

The other advantage is ecosystem gravity. Most SaaS starter kits, AI coding agents, docs, templates, analytics tools, revenue dashboards, and finance workflows assume Stripe first. That makes it easier to move quickly and easier to get unstuck.

Choose a Merchant of Record when global tax compliance is the main thing slowing you down, when you sell low-friction digital products internationally, or when the simplicity of one platform fee beats stitching together processor, tax, invoices, storefront, and compliance work yourself.

Creem and Dodo Payments are worth watching because they are trying to undercut older MoR pricing while staying founder-friendly. Polar is interesting for developer-first products, open-source monetization, entitlements, and usage-based workflows. Paddle remains a mature software MoR, especially for teams that value operational depth over lowest headline price. Lemon Squeezy remains simple and familiar for digital products and software licenses.

The hidden question is not whether 5% + 50c is expensive. It is whether the extra fee is cheaper than your time, your accountant, tax registrations, support load, refund workflows, payment method coverage, and the risk of getting compliance wrong.

For a new SaaS project, add Stripe as the payment provider in your formula unless the project has a clear MoR requirement. Then turn the payment setup into visible milestones: create Stripe account, configure products and prices, set up Checkout, add webhooks, test subscription lifecycle events, connect Customer Portal, add environment variables, configure Stripe Tax if needed, and validate production payments.

For MoR providers, the checklist changes. Track onboarding approval, product catalog setup, tax and invoice settings, checkout domain, webhook signing secrets, payout account, refund policy, subscription cancellation path, and customer portal access.

Once revenue starts, the payment provider belongs in your operating dashboard. Track MRR, failed payments, churned customers, trial conversion, refund rate, dispute rate, and net revenue after fees. The cheapest provider on day one is not always the provider that gives the clearest revenue system at 500 customers.

Use Stripe by default for SaaS. It is the core Trackk formula recommendation because it has the deepest infrastructure, the strongest developer ecosystem, and the most room to grow from first customer to serious revenue.

Use Creem or Dodo Payments when you want a lower-cost MoR option and the product fits their approval, payout, and platform constraints. Use Polar when developer-first MoR tooling and transparent plan-based pricing matter. Use Paddle when you want a mature software MoR. Use Lemon Squeezy when digital product convenience and storefront simplicity are more important than minimizing every fee.

If you are at 50 paying customers, optimize for launch speed, reliability, and tax sanity. If you are at 500 paying customers, start reviewing blended effective rates, annual billing, failed-payment recovery, custom pricing, and whether your provider still matches the business you are becoming.