Changelog

Material changes to paymentprocessor.dev are recorded here using calendar dates.

2026-07-30

Added a sourced multi-currency comparison for all eight Merchant of Record providers, covering checkout presentment, the currency buyers are actually charged, seller balances, payout currencies, and buyer- and seller-side FX costs.
Added 24 representative currency routes across three markets: US with USD, EU with EUR, and markets outside the US and EU with CHF.
Added the same three market examples to every Merchant of Record provider profile, including conversion counts, fee disclosures, and explicit labels where conversion details are not publicly disclosed.
Added content-schema and validation rules for currency evidence, market-example completeness, and source review dates.

Renamed the publication from Payment Stack Guide to Choose a Payment Processor across navigation, page titles, structured metadata, social metadata, copyright text, and the Open Graph image.
Reordered Merchant of Record cards and currency charts by editorial popularity: Paddle, Lemon Squeezy, Gumroad, Polar, FastSpring, Stripe Managed Payments, Dodo Payments, and Creem.
Clarified double-conversion routes for FastSpring, Lemon Squeezy, Paddle, Polar, Gumroad, and other providers, including which party may pay each fee.

Removed GoCardless from the provider catalog, comparison tools, country coverage, calculator rules, and company explorer.

Launched paymentprocessor.dev with evidence-backed Merchant of Record and direct-payment provider profiles, legal-seller decision paths, provider comparisons, company intelligence, country coverage, cost and migration tools, a payments learning library, and canonical migration guidance.