The formula
KEEP = sale - 0.026x sale - 0.10. Official starting: in-person card processing 2.6%+$0.10. On $100 -> $97.30. Online/manual entry 3.5%+$0.15 is a you-type preset. POS plan monthly typed $0 (empty) is not inside KEEP.
Keep $96.80 Shopify vs $97.30 SumUp on $100 -- Start Shopify (Impact · FTC: affiliate)
Sources
SumUp credit card processing fees (in-person 2.6%+$0.10; online/manual 3.5%+$0.15). Locked 2026-09-10. Affiliates none.
FAQ
How much do you keep on $100 with SumUp?
When the page opens: KEEP $97.30. Official in-person 2.6%+$0.10. Formula: KEEP = sale - 0.026x sale - 0.10. Online/manual 3.5%+$0.15 -> $96.35 is you-type. Monthly/plan typed $0. Planning only. Not affiliated. Source: SumUp processing fees.
Where is the Official fee source?
SumUp US: in-person 2.6%+$0.10; online and manual entry 3.5%+$0.15. Source: sumup.com/en-us/credit-card-processing-fees/.
Worked KEEP math on $100?
Official: $100 - 2.6% - $0.10 = $97.30. Online/manual: $100 - 3.5% - $0.15 = $96.35. Monthly typed $0 never enters KEEP.
Is monthly/plan billed inside $97.30?
No. Monthly/plan is a typed line, default $0 (empty), never baked into KEEP $97.30.
Is this affiliated?
Not affiliated with SumUp. Affiliates none claimed for SumUp. Shopify Impact bridge CTAs used. Educational planning only.
Homepage rate calculator All KEEP hubs Payments compare SumUp fees explained Compare Shopify -- keep $96.80 on $100 (Impact · FTC: affiliate)