How do I correct an error in a VAT return I have already filed?
If the error changed your VAT payable by AED 10,000 or less, you can just fix it in your next VAT return. If it's more than that, you must file a formal Voluntary Disclosure with the FTA within 20 business days of finding the mistake.
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The detail
Under Article 10 of Federal Decree-Law No. 28 of 2022 and its Executive Regulation (Cabinet Decision No. 74 of 2023, Article 10), an error that understates payable tax by more than AED 10,000 must be corrected by submitting a Voluntary Disclosure within 20 business days of becoming aware of it. Where the error is AED 10,000 or less, it can instead be corrected in the tax return for the period in which it was discovered (or an earlier return not yet due), provided such a return is still available to file; if not, a Voluntary Disclosure is still required. If the error overstates tax paid (i.e. tax was overpaid) or reduces a refund entitlement, a Voluntary Disclosure is optional rather than mandatory.12
What the law says
- A Taxable Person who finds that a filed VAT return understated payable tax must submit a Voluntary Disclosure to correct it.2
- The Executive Regulation sets the AED 10,000 threshold and the 20 business day deadline for submitting a Voluntary Disclosure, and allows in-return correction below that threshold.1
- FTA guidance confirms that errors under AED 10,000 can be corrected directly on a later VAT return, while larger errors must be disclosed within 20 business days, and a timely disclosure can reduce penalties.3 Based on FTA guidance
What it depends on
- The AED 10,000 threshold is measured by the value of the error's effect on payable tax, not the transaction value.1
- If no suitable tax return remains open to absorb a small correction, a Voluntary Disclosure must be filed instead within 20 business days.1
- Voluntary Disclosures filed after notice of a tax audit or during an audit get reduced or no penalty relief.3 Based on FTA guidance
Check before you rely on it
- Calculate the exact AED value the error changes your payable tax by
- Check whether a later VAT return is still open for filing before the correction is due
- Confirm whether you have already received an FTA audit notice, as this affects penalty relief
Sources (3) — read the official text
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Article 10 – Submission of Voluntary Disclosure2
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Article 10 – Submission of Voluntary Disclosure2 1. If a Taxable Person becomes aware that a Tax Return submitted to the Authority or a Tax Assessment issued to the Taxable Person by the Authority is incorrect, 2 Article amended as per Cabinet Decision No. 17 of 2026. Cabinet Decision No. 74 of 2023 and its amendments – As published by Ministry of Finance 7 resulting in a calculation of the Payable Tax according to the Tax Law being less than it should have been, the following shall apply: a. If the amount is more than (10,000) ten thousand Dirhams, the Taxable Person shall submit a Voluntary Disclosure within (20) twenty Business Days from the date when the Taxable Person became aware of the error. b. If the amount is equal to (10,000) ten thousand Dirhams or less, the Taxable Person shall do the following: 1) If the Taxable Person is obligated to submit a Tax Return to the Authority, correct the error in the Tax Return that has not become due for submission for a previous Tax Period or in the Tax Return for the Tax Period in which the error has been discovered, whichever is earlier. 2) Submit a Voluntary Disclosure within (20) twenty Business Days from the date of becoming aware of the error, in the event that there is no Tax Return through which the error can be corrected according to subparagraph 1 of this Clause. 2. If a Taxpayer becomes aware that a Tax Refund application submitted to the Authority is incorrect, resulting in a calculation of a Refund to which it is entitled according to the Tax Law being more than the correct amount, the Taxpayer shall submit a Voluntary Disclosure to the Authority within (20) twenty Business Days from the date when the Taxpayer became aware of the error, unless the error was a result of an incorrect Tax Return or Tax Assessment, in which case the following shall apply: a. If the amount is more than (10,000) ten thousand Dirhams, the Taxpayer shall submit a Voluntary Disclosure within (20) twenty Business Days from the date when the Taxpayer became aware of the error. b. If the amount is equal to (10,000) ten thousand Dirhams or less, the Taxpayer shall do the following: 1) If the Taxable Person is obligated to submit a Tax Return to the Authority, correct the error in the Tax Return that has not become due for submission for a previous Tax Period or in the Tax Return for the Tax Period in which the error has been discovered, whichever is earlier. 2) Submit a Voluntary Disclosure within (20) twenty Business Days from the Cabinet Decision No. 74 of 2023 and its amendments – As published by Ministry of Finance 8 date of becoming aware of the error, in the event that there is no Tax Return through which the error can be corrected according to subparagraph 1 of this Clause. 3. For the purposes of implementing the provisions of this Article, the Voluntary Disclosure shall be submitted in the form and manner specified by the Authority.
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Article 10 1. If a Taxable Person becomes aware that a Tax Return submitted to the Authority or a Tax Assessment issued by the Authority is incorrect, which resulted in a calculation of Payable Tax according to the Tax Law being less than it should have been, the Taxable Person shall submit a Voluntary Disclosure. 2. If a Taxpayer becomes aware that a Tax refund application submitted to the Authority is incorrect, which resulted in the calculation of a refund amount to which he is entitled according to the Tax Law being more than it should have been, 8 Clause amended as per Federal Decree-Law No. 17 of 2025. Federal Decree-Law No. 28 of 2022 and its amendments – As published by the Ministry of Finance 8 the Taxpayer shall submit a Voluntary Disclosure. 3. If a Taxable Person becomes aware that a Tax Return submitted to the Authority or a Tax Assessment issued by the Authority is incorrect, which resulted in the calculation of Payable Tax according to the Tax Law being more than it should have been, the Taxable Person may submit a Voluntary Disclosure. 4. If a Taxpayer becomes aware that a Tax refund application submitted to the Authority is incorrect, which resulted in the calculation of a refund amount to which he is entitled according to the Tax Law being less than it should have been, the Taxpayer may submit a Voluntary Disclosure. 5. If the Taxpayer discovers an error or omission in the Tax Return submitted to the Authority, where there is no difference in the amount of Due Tax, the Taxpayer must correct such error by submitting a Voluntary Disclosure in the cases specified by the Authority, or correct such error via a Tax Return in any other case.9 6. The Executive Regulation shall set out the detailed provisions relating to submitting a Voluntary Disclosure to the Authority and the method of application of Administrative Penalties imposed prior to the Voluntary Disclosure. Title Three – Tax Procedures Chapter One – Notification
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The amounts of VAT charged by the taxable person and input tax recoverable by the person would then need to be netted off in the tax return. The resulting amount is the net VAT payable to, or to be refunded by, the FTA. 11.3.1. Due date for submitting tax returns The due date for submitting tax returns and making a payment of payable tax to the FTA is the 28th day following the end of the tax period to which the tax return relates. It should be noted that where a payment is due to the FTA, it must be received by the FTA by the deadline. Where the due date for the submission of the tax return and the corresponding payment falls on a weekend or a national holiday, the deadline for filing the tax return or making a payment is extended to the first working day following this. Submitting a tax return or making a payment of tax late will result in a penalty levied by the FTA. All tax returns should be submitted online using the FTA portal. The return can be submitted by the taxable person, or another person who has the right to do so on the taxable person’s behalf (for example, a tax agent or a legal representative). 11.3.2. Correcting errors Where a taxable person has made an error (for example, calculated output tax incorrectly or recovered the incorrect amount of input tax), then the person is required to correct this error. Where the correction is required in respect of a tax return or a tax assessment, and the total value of the error is less than AED 10,000, the taxable person may correct the error on the tax return for the tax period in which the error was discovered. In all other cases, the taxable person must disclose the error to the FTA within 20 business days of becoming aware of the error, and request the FTA to correct the error. By making a voluntary disclosure the taxable person may be eligible for a reduction in any applicable penalty. However, where a voluntary disclosure is submitted to the FTA after the taxable person has received notice of a tax audit or while a tax audit in in progress, the voluntary disclosure will either reduce penalties to some extent or not at all. 44 VAT Guide | Taxable Person | VATG001
Written by AI from the FTA sources above and checked before display. Not tax advice or official FTA information - confirm with a tax adviser before you act. Full disclaimer
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