The Final Invoice function is used when the Payment plan to the buyer isn't in use for a project, and you want to create a final invoice with previously sent invoices accounted for.

In the Invoice module, create a new invoice by clicking on  .  Give it a title and select the Final invoice option (and other relevant alternatives). Save.

The invoice draft is created with all the included invoiceable items and deductions for previously invoiced amounts.

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News – latest updates from release notes

Summary of changes and improvements retrieved from Next Project's release notes.

2026

June 2026

• Update of existing customer invoice
• When creating the invoice, you can now make a selection of which costs you want to include on your invoice. The selection button can be found on the right in each section for Vendor Invoices, Hours and Order Lines in the dialog where the invoice selections are made. The selection includes billable items and if no selection is made, all billable items are included just as before
• You can now also update an already created, unlocked customer invoice with new costs. Select cost source (AO/ÄTA or journal), select specific rows and combine costs from multiple modules in the same invoice. New rows appear at the bottom of the invoice, under its own heading. These can be moved to the desired location
• Review the rows – you can remove individual rows from the invoice if they should not be included (NOTE! the original entry is still marked as invoiced for the time being, just like the other functionality that exists today.)
• Read more about selection and update of customer invoice here