A payment that matches nothing is still money
Short answer
Collections are matched to invoices and payments to purchase documents. What does not match is not hidden: it sits as an advance until it is linked, so the bank balance and the customer balance never disagree.
muhasebe.cirometre.com/banking
Receivables & payables calendarWhat is due to come in and go out, day by day, with the running balance.
Export Open cash plan
Balance today$18,640.00 cash + bank
Out, 30 days$31,890.00 24 payments
In, 30 days$46,270.00 38 collections
Lowest balance$18,020.00 on 8 Oct
End of period+$10,420.00 in 30 days
Due Counterparty Document Out In Balance Certainty
06.10.2026Northwind Supplies Ltd.EXP-2026-0881$4,680.00—$13,960.00Confirmed
08.10.2026Amazon US (payout)PAY-2026-0114—$4,060.00$18,020.00Confirmed
14.10.2026Harborline GmbHEXP-2026-0884$9,230.00—$8,790.00Confirmed
21.10.2026Shopify (payout)PAY-2026-0118—$21,640.00$30,430.00Expected
Forcing a match is worse than leaving it open
Attaching a payment to the nearest plausible invoice makes the screen tidy and the accounts wrong. Later nobody can tell which invoice was actually paid.
An unmatched amount stays an advance on the account: visible, counted and waiting for the document it belongs to.
Frequently asked questions
What happens to a payment with no invoice?
It is recorded as an advance on that account and can be linked to an invoice later.
Can one payment cover several invoices?
Yes, split across them, with the remainder left as an advance if there is one.