How accounting works in IDup
Invoices, payments, expenses and payouts are posted to one ledger by rules, each transaction exactly once.
Most small businesses keep their books twice: once in the invoicing tool and once in an accounting package. IDup keeps them once. An invoice you send, a payment you receive and an expense you record are posted to the ledger by rules.
Each transaction is posted exactly once. Posted entries cannot be changed. You correct a mistake with a reversal.
The pages
- Overview — the figures of the financial year, built from posted entries.
- Journal — all entries, with filters. See Journal entries and reversals.
- To review — transactions that need your decision. See below.
- Receipts — upload and post supplier receipts. See Capture receipts.
- Open items — what customers owe you and what you owe suppliers. See Open items.
- Bank reconciliation — match bank movements. See Bank reconciliation.
- Reports — balance sheet, income statement and more. See Financial reports.
- Chart of accounts — add, rename or hide accounts.
- Year-end closing — see Close the year.
- Settings — tax profile, posting rules and audit log.
Switch it on
If you see Switch on accounting instead of these pages, accounting is not on yet for your company. An administrator can switch it on. IDup then sets up the chart of accounts. Entries made before that stay as legacy entries.
Automatic or reviewed
Under Settings you choose how transactions arrive. Post transactions automatically is the recommended setting. Or choose Create transactions as drafts for review. Exceptions, such as foreign currency, always land in To review.
The areas that feed it
- Finance → Expenses — what you spend, with the receipt attached.
- Finance → Payments — incoming payments, payouts and customer credit.
- Purchasing — supplier invoices, purchase orders and debit notes.
- Sales — the invoices, credit notes and payments on the income side.
Nothing is tracked — the buttons only open a message so you can tell us what was missing.

