How the posting logic works for partial payments

Let’s use an example — a VAT-exempt invoice of CHF 2,000.–, paid in multiple installments.

Invoice creation (01.03.2025)

The invoice is recorded completely as receivable:

  • 1100 / 3000 – CHF 2,000.–

First partial payment (15.03.2025) – CHF 1,500.–

A partial amount is paid, reducing the open receivable:

  • 1020 / 1100 – CHF 1,500.– (payment received)
  • 1100 / 1100 – CHF 500.– (automatic OIC booking for the remaining part)

In the open items list, the invoice remains “open”, now with a remaining balance of CHF 500.–.
Clicking the PDF icon at the end of the row still brings up the original invoice of CHF 2,000.–.

Final payment (30.04.2025) – CHF 500.–

The remaining balance is settled:

  • 1020 / 1100 – CHF 500.–

The invoice is now fully paid.

Reporting — what you need to know

Excel export “All receivables” as of 30.06.2025
In this export, only the remaining open amount of CHF 500.– appears. The original invoice amount of CHF 2,000.– is not shown. You have to keep this in mind.


“Open items as of 31.03.2025” list
This report correctly shows the then-outstanding amount of CHF 500.–.

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