Refunds and credit notes under ZIMRA FDMS
Once a sale is fiscalised it is on record with ZIMRA. Taking the money out of the drawer and the item back on the shelf does not change that record: as far as FDMS is concerned the sale still happened, and you still owe its VAT. The way to undo all or part of a fiscalised sale is a fiscal credit note.
What a credit note is
A credit note is a fiscal document of its own, signed by your fiscal device and reported to FDMS like a receipt, with negative amounts. It points back to the original fiscal invoice, so ZIMRA can see which sale it reduces and by how much VAT.
The rules it has to follow
- It must reference the original fiscal invoice: the one the customer is returning goods from.
- That invoice must already have been accepted by ZIMRA. A receipt still waiting in an offline queue has to be filed first.
- There is a limit on how old the original can be. Integrators' documentation gives it as twelve months at the time of writing; check ZIMRA's current rules for long-delayed returns.
- The VAT on each returned line should follow the rate it was sold at, not today's rate: goods sold at 15% VAT in 2025 and returned in 2026 are credited at 15%.
Credit note or debit note?
A credit note reduces what the customer was charged: a return, a price agreed down after the sale, an item charged twice. A debit note increases it, for example goods added to an invoice after it was issued. Both point back to the original invoice.
Mistakes that cause trouble
- Refunding cash from the drawer with no credit note. The till is short, ZIMRA still has the full sale, and the VAT return overstates your output tax.
- Voiding a sale in the till after it was fiscalised. The till forgets it; FDMS does not.
- Ringing up a negative sale as a new receipt. A return has to be a credit note against the sale it reverses.
- Leaving differences for later. ZIMRA's guidance is that what was printed must match what was sent to FDMS, and mismatches should be sorted out before the fiscal day is closed.
Why your business customers care
A VAT-registered buyer can only claim input tax on a valid fiscal tax invoice, and a return changes what they can claim. Giving them a proper credit note keeps their records and yours in step, and it shows as VALID when they check its QR code on ZIMRA's FDMS portal.
With Syncro POS
A refund on Syncro POS files its own ZIMRA credit note against the original sale, signed by Syncro Fiscal, so the drawer, the stock and ZIMRA all agree.