BusiCashbook

Open the tool. There is nothing to install, and it keeps working without internet.

Enter each takings line: amount including VAT, the rate, and how it was paid. The VAT is taken out of the amount, not added on top.

Count the drawer by denomination. Only cash counts towards the drawer: a card payment never lands in it, and mixing those up is what causes big differences.

The month view adds the days together, per VAT rate and per payment method. That is the sheet your accountant asks for.

Export a CSV for the accountant or a backup file for yourself. Everything stays on this device; nothing is sent anywhere, so make your own copy.

Done, or something went wrong? Open the dashboard and start over with a clean sheet.