Finding an error in a VAT return you already filed triggers the same two questions in every finance team: do we have to tell the FTA, and what will it cost? Since 14 April 2026, the answers changed materially – Cabinet Decision No. 129 of 2025 replaced the old tiered voluntary disclosure penalties (5% to 40%) with a time-based model that strongly rewards disclosing early. Here is how the new rules work, when a voluntary disclosure (Form 211) is mandatory, and when it genuinely saves you money.
When a voluntary disclosure is mandatory
The trigger is the size of the tax impact, not the size of the invoice:
- Error of more than AED 10,000 in tax: you must file a voluntary disclosure (Form 211) within 20 business days of discovering the error.
- Error of AED 10,000 or less: you may correct it in the tax return for the period in which you discover it – no Form 211 needed (unless there is no future return to correct it in).
“Discovering” starts the clock. Sitting on a known error does not just accrue penalties – it converts a routine correction into a compliance failure if the FTA finds it first.
The new penalty math (from 14 April 2026)
| Scenario | Old regime | New regime (Cabinet Decision 129/2025) |
|---|---|---|
| VD before any FTA audit notice | Tiered 5%-40% of tax difference depending on how late | 1% per month of the tax difference, counted from the original due date until submission |
| VD after receiving an audit notice | Up to 50% fixed | 15% fixed + 1% per month until submission |
| FTA discovers the error itself | 50% fixed + daily percentages | 15% of unpaid tax + late payment penalties |
| Late payment of the disclosed amount | Up to 300% cap structure, 1%+ daily elements | 14% per annum, non-compounding |
| First-time incorrect return (fixed element) | AED 1,000-3,000 range historically | Reduced – first-time fixed penalty now AED 500 |
Worked example: what disclosure actually costs now
Suppose you under-declared AED 60,000 of output VAT in a return originally due 28 October 2025, and you discover the error in July 2026 – nine months later.
- Disclose now, before any audit notice: roughly 1% × 9 months × AED 60,000 = AED 5,400 in disclosure penalty, plus the AED 60,000 tax itself and the small fixed penalty.
- Wait, receive an audit notice in December 2026, then disclose: 15% × 60,000 = AED 9,000 fixed, plus 1% × ~14 months = AED 8,400 – about AED 17,400, more than three times the cost of acting now.
- Do nothing and get caught: 15% of the unpaid tax plus late-payment penalties accruing at 14% per year – and an FTA audit relationship you did not choose.
The design intent is obvious: every month of delay now has a visible price, and the audit notice is the cliff edge. (Figures are illustrative; the FTA computes penalties on the specific facts, and transitional rules apply to pre-April 2026 conduct.)
Decision flow: what to do when you find an error
- Quantify the tax impact. Under AED 10,000? Correct in your next return and document the fix.
- Over AED 10,000? The 20-business-day clock is running. Prepare Form 211 on EmaraTax with a clear explanation and corrected figures.
- Check the other periods. The same error (a mis-mapped tax code, a missed reverse charge, an e-invoicing data mismatch) rarely lives in one return. Disclose all affected periods together – repeat disclosures cost more in fixed penalties than combined ones.
- Pay with the disclosure. The 14% p.a. late-payment meter keeps running until the tax is settled, so disclosure without payment only stops one meter.
- Fix the root cause. With UAE e-invoicing reporting transaction data to the FTA in near-real time (see our e-invoicing deadline checklist), recurring errors will surface faster than ever.
When a voluntary disclosure is NOT the right move
Not every discrepancy needs Form 211. Genuine rounding differences, errors of AED 10,000 or less correctable in the next return, and positions where you have a defensible technical interpretation (rather than an arithmetic error) each call for different handling. Disclosing a defensible position as an “error” can concede tax you did not owe – take advice before filing, not after.
How Harrison & Morgan helps
Our VAT team quantifies the exposure across all affected periods, prepares and files Form 211 with the supporting narrative the FTA expects, manages the payment sequencing to stop the penalty meters fastest, and fixes the process failure that created the error – from tax-code mapping to e-invoicing data quality. If you have received an audit notice, our compliance team manages the response end-to-end.
Frequently asked questions
What is a voluntary disclosure (Form 211) in UAE VAT?
It is the FTA’s formal mechanism on EmaraTax for correcting errors in a previously submitted VAT return, assessment or refund application – required when the error changes the tax due by more than AED 10,000.
What is the deadline for filing a voluntary disclosure?
Within 20 business days of discovering the error, where the tax impact exceeds AED 10,000. Smaller errors can be corrected in the next tax return.
What are the voluntary disclosure penalties in 2026?
From 14 April 2026, disclosures made before any audit notice attract 1% per month of the tax difference from the original due date. After an audit notice, a 15% fixed penalty applies plus the 1% monthly element. Late payment accrues at 14% per annum, non-compounding.
Is it worth filing a voluntary disclosure for an old error?
Usually yes – the 1% monthly meter means the cost only grows, and it multiplies once an audit notice lands. The exception is a defensible technical position, which deserves advice before being conceded as an error.
Can I file one disclosure for several tax periods?
Each affected return is disclosed, but you should prepare and submit them as one coordinated exercise – recurring errors disclosed piecemeal accumulate separate fixed penalties and invite closer FTA scrutiny.