Record an expense and charge it on
From a supplier receipt to a line on your customer's invoice.
An expense you paid on a customer's behalf is worth money only if it reaches their invoice. IDup keeps the link so it does.
Step by step
- Add the expense with supplier, date, amount, tax and category, and attach the receipt.
- Set the customer it belongs to, and mark it billable.
- If it relates to a project, set the project as well — it then shows in the project's cost figures.
- When you next invoice that customer, the billable expense is offered as a line. Add it and it is marked as invoiced, so it cannot be charged twice.
- Recurring costs — rent, subscriptions, insurance — can be set to repeat rather than re-entered.
Categories are worth 10 minutes
Expense categories decide where a cost lands in your accounts and therefore what your reports say. Set them up once under the expense category list, using the accounts your accountant expects, and every later booking is filed correctly without a decision.
Nothing is tracked — the buttons only open a message so you can tell us what was missing.
Related articles
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- Create and send an invoice Invoicing & payments
- How accounting works in IDup Accounting & taxes
- AI accounting: receipts read and booked for you Accounting & taxes
- Cash, bank accounts and money in and out Accounting & taxes
- VAT and the financial reports Accounting & taxes

