Why cash and card come to different amounts

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  Rounding applies to cash only

  Card, electronic transfer, and gift-card payments are still priced to the cent. The same basket can therefore come to two different amounts depending on how it is paid for, and that is the intended behaviour rather than a bug — rounding exists because exact change is impossible without the penny, which is not a problem a card has.

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  Round the final total, after tax — never per item

  Line items, fees, and tax are each computed in exact cents first, and only the final amount is rounded. Rounding per item multiplies the effect by the size of the basket, and rounding the tax base makes the register disagree with the tax authority. Every state framework enacted so far applies rounding after tax is calculated.

• Note

  Rounding rule "symmetric" was not applied

  The tender is a card, so the exact total stands. The requested rule was ignored rather than honoured, because applying it would be the mistake this tool exists to catch.

  What to do: Set tender to cash to see what the same basket would round to.

• Note

  The penny is still money

  Production ended on 2025-11-12, but existing pennies remain legal tender indefinitely. Production stopping is not demonetisation, and a customer paying in exact change with pennies is paying in valid currency.

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  There is no federal rounding law yet

  Common Cents Act (H.R.3074 / S.1525) passed the House on 2026-07-14 and the Senate on 2026-08-07, but as different bill numbers, so the House must still pass the Senate version before it can be enacted. Until then rounding is governed by state law, which varies — and the federal bill is permissive rather than mandatory anyway. Verified 2026-09-04; check for changes.

  What to do: Check your own state law. This tool does not know where you are.