Affirm

About Affirm

Affirm is a US 'buy now, pay later' pioneer offering transparent instalment payments with no hidden fees at checkout.

What Affirm supports

Buy now, pay over time (US). Monthly instalments with no hidden fees.

• Payment methods: Monthly / Pay in 4 instalments (BNPL)
• Where it works: United States and Canada
• Billing: one-off payments
• Price: free for every PremiumPress member

Setting up Affirm in PremiumPress

Activate the free plugin, then open your theme’s payment settings and add your Affirm credentials:

• Public API key — Affirm Dashboard → Settings → API keys. Loaded by the affirm.js checkout modal.
• Private API key — Used server-side (Basic auth) to authorise, capture and read charges.

US-only, USD. Amounts $50–$30,000 typically qualify. In sandbox, use Affirm’s test phone 15007723456 / OTP 1234 on the checkout modal. The plugin requires PremiumPress 12.

Affirm plugin FAQ

What do I need to set up Affirm in WordPress?

You'll need a Affirm account and its Public API key and Private API key, which you enter in your PremiumPress theme's payment settings. The plugin itself is free for members.

Does Affirm support recurring subscriptions?

Affirm handles one-off payments in PremiumPress. If you need recurring billing, choose a gateway shown under the Subscriptions filter on the plugins page.

How does the Affirm checkout work?

Affirm (buy-now-pay-later, US) as a payment gateway.