Split payments / partial amounts

Customer wants to pay part by card and the rest in cash or voucher? Done. The SumUp checkout modal now has a “Full amount" / “Partial amount" switch. For partial payments, simply enter the amount to be charged via the SumUp Solo reader — the remainder stays open and can be collected in Shopify POS with any other tender (cash, gift card, voucher …). Highlights: • Free-choice partial amount, validated live against the cart • Remaining balance clearly shown in the modal, with short instructions for Shopify POS • Works with any SumUp Solo setup — zero configuration • Currency- and tax-aware, no manual math Perfect for merchants handling tips separately, deposits, or mixed payment methods.