Polar
A developer-focused merchant of record for subscriptions, one-off sales and usage billing, with publicly posted rates.
Free tier
- Starter plan: no monthly fee
- 5% + 50¢ per transaction
- +1.5% for international (non-US) cards
Paid plans: Pro: $20/month (3.8% + 40¢ per transaction)
Best for
Developers selling SaaS or digital products who want tax handled.
Watch out: Disputes cost $15 each regardless of outcome. Payouts go through Stripe and carry Stripe's payout fees.
Sources
Checked on 2026-11-11. Vendors change pricing often, so confirm on the official page before you commit.