The calculator follows entered assumptions rather than deciding which person should pay or what local tax rules require; one posted-cent receipt supplies the lists, chart, reimbursements and exports.

Allocate personal and shared purchases

Start with the item subtotal printed on the receipt, excluding tax, an existing service charge and any extra tip. Even Split divides the complete posted receipt equally. Itemized mode keeps each person’s own purchase subtotal and adds shared purchases with separate relative weights. A shared dessert can use weights 1 and 1 for an equal division, or 2 and 1 for a two-to-one division. A zero weight excludes that person from that purchase; a positive purchase needs at least one positive weight.

Each personal or shared amount posts once to cents, using the disclosed half-cent-up convention. The resulting item allocations must equal the entered receipt subtotal before a settlement is offered. For example, two entered purchases of 1.005 each post to 1.01 each, so their item total is 2.02. An independently entered subtotal of 2.01 therefore remains a visible mismatch. Correct the purchases or explicitly use their posted total; no anonymous adjustment person absorbs the gap. Names and descriptions are optional, and anonymous participant numbers remain available.

Keep tax, service and extra tip distinct

An existing service charge is a separate amount already on the receipt. Enter it once in its own field. The extra-tip percentage is another explicit input, including zero when that matches your intent. Its chosen base is either the item subtotal before tax or that subtotal plus the posted tax; neither base includes the existing service charge. Tip Options compares illustrative percentages through the same receipt composer and states that it uses the Even Split taxable-subtotal assumptions.

In Itemized mode, mark personal and shared purchases taxable or exempt according to your entered assumptions. Percentage tax uses the taxable allocated item cents and includes the service charge only if you select that option. Flat tax is allocated across the same eligible basis; a positive tax with no eligible basis remains unresolved rather than silently charging exempt participants. Service and extra tip use total item allocations. If all item amounts are zero, those non-item charges use equal participant weights, and that fallback is disclosed. These controls do not verify a jurisdiction’s legal tax treatment or recommend a gratuity.

Review the exact cent receipt

Every posted component uses integer cents. Shared purchases and itemized charges use exact relative weights: whole cents are assigned first, then remaining cents follow the largest fractional remainders. Displayed participant order breaks an exact tie. Even Split first fixes the complete receipt shares, including any listed-order extra cents, and balances the component allocations to those fixed shares. This avoids giving one person several tied component pennies and making an even split differ by more than one cent.

Expand a participant receipt to see allocated items, tax, service and extra tip, along with item weights and remainder indicators. A secondary stacked chart appears for unequal multi-person allocations; hiding a chart series changes only its display. The participant receipts and accessible table remain complete. Optional whole-dollar collection is a separate amount after the exact receipt is settled. Its surplus is not automatically a tip, tax or service charge. For a ten-dollar receipt split three ways, exact shares remain 3.34, 3.33 and 3.33 even when optional collection asks for four dollars from each person.

Record payments and share deliberately

Amounts already paid are recorded against the exact receipt, excluding any optional collection surplus. If recorded payments are below the receipt, the unpaid merchant balance stays visible and no reimbursement suggestions appear. If they exceed it, the overpayment is shown for review. Only when recorded payments equal the receipt total does the calculator match debtors and creditors in displayed order. Those suggestions conserve cents and initiate no payment. Review the actual receipt and payment history before acting.

Calculations do not automatically save financial values or rewrite the page link. Save explicitly stores one working receipt on this device, while Delete removes only this calculator’s saved records. Recognized older records preserve their actual saved numbers; unreadable sources remain unavailable until Reset. Share starts with a clean calculator link. Including receipt values is optional, and participant names and shared-purchase descriptions require separate choices in Itemized mode. Inactive itemized drafts are excluded from Even Split links. Review the complete preview before copying a link. CSV includes exact posted components and allocations; Print uses the same receipt and browser print dialog.