Close the month in an afternoon.

A close is a checklist Otto keeps: unposted lines, unmatched bank items, invoices in review. When it is empty, the period locks and the pack exports.

Everything that would make the numbers move is listed until it is dealt with.

A closed month cannot be edited. A correction posts in the open one and says what it corrects.

P&L, balance sheet, trial balance and the tax working sheet, as PDF and XLSX, with the journal export for your accountant.