When the work is done, you gather the billable lines into an invoice basis (fakturagrunnlag). The key thing to grasp first: an invoice basis is not a real invoice. It's the basis — export material that goes on to your accounting or invoicing system. Onebase doesn't send an invoice itself.
Freezing — and why it's locked
You build a basis as a draft, and when it's right you freeze it. Freezing takes a snapshot of the lines and locks them: a frozen line can never be changed or "un-invoiced". That's deliberate — accounting rules require that an issued basis can't be altered afterwards. If you need to correct something, you do it with a credit note, not by unlocking.
Partial and ongoing invoicing
You don't have to invoice everything at once. Freeze only some of the lines and the job becomes partly invoiced — the frozen lines are locked, while the rest is still live work you can change and invoice later.
Fully invoiced but the job continues (say, hours next month)? Just add a new line — the job re-opens to partly invoiced for the next round. That's how one job can live across many invoicing rounds. The old frozen lines are untouched.
Credit notes
A frozen invoice is corrected with a credit note — a separate, reversing document. The original stays as it is (accounting requires it); the credit note is layered on top. A full credit note nets the amount to zero across the two documents, but doesn't unlock the job. To simply clear away a nil job, archive it (see Jobs: from quote to done).
Cost bearer and supplier claims
Each line has a cost bearer — who carries the cost:
- Customer — normal billable work.
- Warranty — your own warranty: cost without revenue.
- Supplier — the supplier should make it good. This is a supplier claim: you record an expected amount to be reimbursed and track it from expected → received or lost. The claim lives on the cost side and doesn't affect the customer's invoice.
- Internal — your own account / goodwill.
The rules for pricing, estimates and withdrawal are in Pricing, estimates and withdrawal. For whether an agreement invoices a flat fee or by the hour, see Agreements, price inheritance and subscriptions.