POSGivr

How it works: By default the POS extension adds a “POS Round-Up” custom sale to the cart. No product setup is required. If you need round-ups tracked as product variants for accounting, configure the SKU Tracking section below — amounts with a Variant ID will be added as real product line items instead.

Product Variant mode. If your accounting requires round-ups tracked as specific product variants, create a “Round-Up” product in Shopify with a variant for each denomination (e.g. $1, $3, $5, $10). Enter the Variant IDs below. The POS extension will add these as real line items instead of a custom sale. Amounts without a mapping still use the default custom sale.