10 October 2026 · Evidence
What Evidence Should Stay With the Return
The FTA treats a valid tax invoice as primary evidence for recovering input VAT, and its VAT guidance expects records that support the return figures. Keep tax invoices, credit notes, customs records, reverse-charge workings and reconciliation notes together. The Federal Tax Authority can request supporting material, so a ledger total on its own is not a sufficient review pack.
Exiloz Management & Tax Consultant · Dubai-based FTA-focused advisory · VAT, corporate tax & accounting
A return line needs a source record behind it
The Federal Tax Authority's Taxable Person Guide describes the audit trail required to trace a VAT amount from a source document through to the final return. For a purchase claim, that normally starts with a valid tax invoice. Imported goods need the customs and import record. Credit notes, adjustment workings, the VAT account and records of supplies belong beside the return bridge, not in an unrelated archive.
Start with the line that has no evidence. A sales invoice supports output tax, a purchase tax invoice supports an input claim, a customs entry supports an import and a credit note explains a reduction to an earlier supply. The document must answer what happened, when it happened and why the amount belongs in the return. A ledger total answers none of those questions on its own.
The FTA VAT Returns User Guide distinguishes VAT incurred from recoverable input VAT. A business may record an expense and still have to exclude its VAT from the claim if the recovery conditions are not met. Compare the net amount, VAT amount, business use, period and return line. That small discipline prevents a gross expense figure from becoming an unsupported input claim.
- Sales invoices for output tax.
- Purchase invoices for input VAT.
- Customs records for imported goods.
- Credit notes and adjustments for changes.
The pack follows the lines that can move
A business with ordinary local sales still needs more than a sales report if it claims input VAT. The pack should cover purchases, imported goods, reverse-charge services, credit notes and adjustments that affect the period. The FTA's VAT Returns User Guide says the recoverable amount is the input tax the taxable person is entitled to recover, not every VAT amount found in an expense export.
Credit notes need their own trail because they change an earlier supply. Keep the original invoice, the credit note, the corrected value and the VAT difference together. A reverse-charge entry needs the supplier document and the calculation behind the amount reported. An import needs the customs record that created the tax amount. The same folder can hold all three, but the links must remain visible.
This page is also for the business that has little to claim. If the return has no recoverable input VAT, keep the sales records, import records and adjustment evidence that support that position. Do not create a purchase claim because an invoice is easy to find. The evidence pack is meant to show the return as filed, including excluded or unresolved lines.
- Separate recoverable from non-recoverable VAT.
- Link every credit note to its original invoice.
- Show the reverse-charge calculation and source.
- Explain every manual adjustment in writing.
Build the pack so another person can recalculate it
The work includes collecting source invoices, matching credit notes, tying import and reverse-charge workings to the return and preparing a bridge from the ledger to each VAT line. It should list missing documents, excluded amounts and manual adjustments. It does not turn an unsupported expense into recoverable input VAT, and it does not replace the business's review of the submitted figures.
Illustration only: taxable sales of AED 120,000 at the standard 5% rate produce AED 6,000 of output VAT. Purchase records support AED 48,000 at 5%, producing AED 2,400 of input VAT. Before other adjustments, AED 6,000 minus AED 2,400 equals AED 3,600 payable. The arithmetic makes the bridge visible. The invoices and business use still decide the claim.
A mixed-use invoice is an evidence boundary, not a shortcut. The FTA guides explain the records and the recovery concept, but they do not settle every allocation where one document covers both business and restricted or private use. Show the allocation, retain the full invoice and record the reason for the amount claimed. If the facts are unresolved, flag the line instead of hiding it.
- Source invoices and alternative documents.
- Import and reverse-charge workings.
- Credit-note and adjustment trail.
- A bridge with missing-item flags.
| Document | What it proves | Reviewer action |
|---|---|---|
| Sales tax invoice | Output supply and VAT | Tie it to the sales ledger. |
| Purchase tax invoice | Input VAT and business purchase | Test recovery and period. |
| Tax credit note | Reduction to an original supply | Match invoice and adjustment. |
| Customs import record | Imported goods and VAT | Tie entry to the return line. |
Make the reviewer follow one source trail
Begin with the VAT return and mark each line that needs support. Pull the matching ledger report, then attach the invoice, credit note, customs record or reverse-charge calculation. Recalculate the line from the source document, record any difference and explain why an item was removed or moved. Save the approved bridge with the return so its context survives a handover.
The FTA Taxable Person Guide says records do not have to be stored in one specific format. They must be readily available and legible when requested. An internal spreadsheet can index a file, but it cannot replace a missing tax invoice or import record. That is the limit of the index. It makes evidence easier to find, but it does not create evidence.
Retain the source, the calculation and the conclusion together. The FTA guide says the general minimum retention period is five years after the end of the related tax period. A folder that opens but cannot show how the number reached the return is not a useful archive. Keep the final return and the bridge in the same review pack.
- Mark unsupported return lines first.
- Trace each amount to one source record.
- Record removed and moved items.
- Save the bridge with the final return.
The mistake we see most is filing from the ledger
The mistake we see most is filing from the ledger total while the source documents sit in several places. A duplicate invoice, an unlinked credit note or an import amount copied from the wrong period can survive a clean-looking export. The review effort is shaped by transaction volume, missing files, imports, reverse-charge activity, corrections and the quality of the existing index.
The cost of losing the record is concrete. Cabinet Decision No. 129 of 2025 lists AED 10,000 for each violation where required records are not kept, and AED 20,000 for a repeated violation within 24 months. That is separate from the tax that may still be due. The FTA Taxable Person Guide sets the general retention period at five years after the related tax period.
We would not file while an input VAT line rests only on a ledger total. Build the pack around the lines that change, keep the unresolved items visible and let the taxable person approve the treatment. This is a review pack, not a statutory audit, and it does not transfer the filing decision to a preparer.
- Number of transactions and source files.
- Missing or duplicated invoices.
- Import and reverse-charge complexity.
- Quality of the existing reconciliation.
Related guides
Frequently Asked Questions
For building a reviewable VAT evidence pack.
What documents support input VAT?
The Federal Tax Authority's Taxable Person Guide identifies a valid tax invoice as primary documentary evidence for input tax recovery. Keep the invoice with proof of the business purchase, related credit note, payment or customs record where relevant, and the reconciliation that ties it to the return.
What should support reverse-charge entries?
The FTA expects records that explain the imported service, the supplier, the tax treatment and the amount reported. Keep the contract or invoice, the reverse-charge calculation and the input-tax recovery analysis together so the return line can be followed back to the transaction.
Do credit notes belong in the pack?
Yes. The Federal Tax Authority's VAT guidance treats credit notes as adjustments that affect the original supply. Retain the credit note, original invoice and accounting entry, then show how the adjustment changed output or input tax in the reconciliation.
Can Exiloz prepare the evidence pack?
Exiloz can organise invoices, credit notes, customs records and reverse-charge workings into a review pack, then tie the supporting files to the return. You approve the figures before submission through EmaraTax. The FTA remains the receiving authority.
Is your evidence ready?
Exiloz organises the source records, traces adjustments and prepares the VAT review pack for your approval.