ShelfCalc

Cash drawer calculator

Count the drawer by bills and coins, subtract your starting bank, and check whether you're over or short against the register.

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Optional. For over/short.

How it works

Count each denomination, and the calculator totals the drawer. Subtract the starting bank you leave in for the next shift to get the deposit, then compare against the register's cash sales to see if the drawer is over or short.

Drawer total = Sum of (count × value) for every bill and coin
Deposit = Drawer total − Starting bank
Over or short = Drawer total − Starting bank − Cash sales per register

Example. The drawer holds $798 in bills and $18 in coins, for a total of $816.00.

With a $150 starting bank, the deposit is $666.00.

The register says cash sales were $668.50, so the drawer is $2.50 short.

Tips for a clean count

When the drawer doesn't balance

Small differences happen. Repeated shortages on the same shift, or overages followed by shortages, are worth a closer look. Common causes include wrong change, a paid-out not recorded, a refund rung incorrectly, or a cash sale entered as a card sale. Keeping a simple log of over/short by shift and register makes patterns easy to spot.

Common questions

Does a drawer that's over mean nothing is wrong?
No. An overage still means a mistake, often a customer who got too little change. Treat overages and shortages the same way.
Does this save my counts?
No. Everything stays in your browser and disappears when you close the page. Write the totals in your cash log.

Last updated October 11, 2026.