The formula
KEEP = sale - 0.029x sale - 0.30. Official starting: Amazon Pay web/mobile domestic 2.9%+$0.30. On $100 -> $96.80. Cross-border 3.9%+$0.30 is a you-type preset. Shopify Payments path uses Shopify rates, not Amazon Pay rates.
Keep $96.80 Shopify vs $96.80 Amazon Pay on $100 -- Start Shopify (Impact · FTC: affiliate)
Sources
Amazon Pay fees (help/201212280) (web/mobile domestic 2.9%+$0.30; cross-border 3.9%+$0.30). Locked 2026-09-10. Affiliates none.
FAQ
How much do you keep on $100 with Amazon Pay?
When the page opens: KEEP $96.80. Official web/mobile domestic 2.9%+$0.30. Formula: KEEP = sale - 0.029x sale - 0.30. Cross-border 3.9%+$0.30 -> $95.80 is you-type. Shopify Payments path uses Shopify rates. Monthly/plan typed $0. Planning only. Not affiliated. Source: Amazon Pay fees.
Where is the Official fee source?
Amazon Pay help 201212280: web/mobile domestic 2.9%+$0.30; cross-border 3.9%+$0.30. Source: pay.amazon.com/help/201212280.
Worked KEEP math on $100?
Official: $100 - 2.9% - $0.30 = $96.80. Cross-border: $100 - 3.9% - $0.30 = $95.80. Monthly typed $0 never enters KEEP.
Is monthly/plan billed inside $96.80?
No. Monthly/plan is a typed line, default $0, never baked into KEEP $96.80.
Is this affiliated?
Not affiliated with Amazon. Affiliates none claimed for Amazon Pay. Shopify Impact bridge CTAs used. Educational planning only.
Homepage rate calculator All KEEP hubs Payments compare Amazon Pay fees explained Compare Shopify -- keep $96.80 on $100 (Impact · FTC: affiliate)