Tipping and round-up donations are first-class behaviors for food, service, and cause-driven merchants — but Magento 2 (Open Source and Adobe Commerce) has no native concept of an optional, customer-chosen extra amount at checkout. This extension adds one cleanly, without hacking core sales tables.

ECOSIRE builds this as a proper module under app/code/Ecosire/OrderTipDonation, registered through registration.php and a versioned etc/module.xml. The tip/donation step is injected into the Luma and Hyvä/PWA-compatible checkout as a custom Knockout/UI component, and the chosen amount is persisted to the quote via an extension attribute and a quoteRepository save through a service-contract API — never a raw SQL write. A collector class plugged into the checkout totals collection (Magento\Quote\Model\Quote\Address\Total) adds the tip and round-up donation as a discrete total segment, so it flows correctly into order, invoice, and credit memo without distorting subtotal, tax base, or shipping.

Customers see preset tip buttons (e.g. 10/15/20%) plus a free-entry custom amount, and an opt-in "round up for charity" toggle. Each store view can be bound to its own charity and rounding rule via system.xml configuration under a dedicated Stores > Configuration section, gated by an admin ACL resource in acl.xml. The collected amount renders as a clearly labeled line on the order, invoice PDF, customer emails, and the admin order view. A reporting grid (built on a UI component listing + a dedicated collection) aggregates tips and donations by period, store, and charity, and the same data is exposed over REST and GraphQL for downstream BI or accounting export.

Because this is custom-built per merchant, ECOSIRE handles installation on your environment, payment-gateway and tax-rule compatibility checks, theme integration, and post-launch support.