UAE Tax Procedures Law 2026 Under FDL 17 of 2025

Federal Decree-Law No. 17 of 2025 was issued on 1 October 2025 and published in Official Gazette Issue 809 on 14 October 2025. It takes effect on 1 January 2026. It is the biggest rewrite of UAE tax procedures since FDL 28/2022 set the original framework.

The FTA’s assessment window now stretches to 15 years for evasion and non-registration cases. Refund claims face a hard 5-year deadline. New Article 54 BIS gives FTA Guiding Decisions binding legal weight, and Article 10(5) refines how minor errors are corrected.

If your business pays UAE VAT, Excise Tax or Corporate Tax, these changes touch long-term risk, cash flow and routine compliance.

So what changed under FDL 17/2025, really?

The UAE tax procedures law, formally Federal Decree-Law No. 28 of 2022, governs how every federal tax in the UAE is administered. Registration, return filing, payment, FTA audit authority, assessment timelines, refund claims, penalty treatment, appeal rights — all of it sits in this statute.

Because the same procedural backbone runs through VAT, Excise Tax and Corporate Tax, one amendment hits all three at once. That’s worth pausing on — it’s why a single decree-law ends up reshaping the risk profile for almost every registered business in the country.

FDL 17/2025 is the second major amendment since 2022, building on Federal Decree-Law No. 17 of 2024 (effective 30 October 2024).

Why the Cabinet pushed this through now

Four policy objectives drove FDL 17/2025:

1. Tighten anti-evasion enforcement with a longer assessment window for businesses that deliberately misreported or skipped registration.
2. Bring certainty to refunds by capping unclaimed credits at 5 years.
3. Formalise FTA interpretive authority so businesses can rely on published guidance as a legal shield, not just administrative opinion.
4. Finish the move away from the 2017 procedural regime by repealing Article 25 BIS of Federal Decree-Law No. 7 of 2017.

Who this actually catches

Every business registered for a UAE federal tax feels this to some degree, but the sharpest effects land on a few kinds of business first.

If you’re carrying historical credit balances, any VAT, Excise Tax or Corporate Tax credit that is approaching or has already passed the 5-year mark has to be acted on before 31 December 2026 under the transitional grace period. If instead you’re sitting on complex or aggressive historical positions, the 15-year window for evasion cases changes the risk math on anything you expected to lapse after 5 years; the corporate tax voluntary disclosure guide walks through how proactive disclosure now interacts with the penalty framework. And for everyone else registered for tax, the binding Guiding Decisions and the refined Article 10(5) channel reshape routine compliance regardless of how clean your history is.

Getting compliant, end to end

Step 1: Audit all open credit balances

Pull every unrecovered credit balance across VAT, Excise Tax and Corporate Tax from EmaraTax. For each credit, note the originating tax period end-date. Any credit whose 5-year window has already expired, or that will expire before 31 December 2026, falls into the transitional grace period and must be submitted by year-end.

Step 2: Review historical positions for voluntary disclosure opportunity

Identify positions that were aggressive under the previous framework. Given the 15-year window now available to the FTA in evasion cases, positions that were expected to time-bar after 5 years need reassessment.

Proactive voluntary disclosure under Cabinet Decision No. 129 of 2025 typically produces much better penalty outcomes than discovery by the FTA. See the UAE tax penalties 2026 guide for the penalty treatment comparison.

Step 3: Submit transitional refund claims by Q3 2026

EmaraTax refund applications typically take 60–90 days for the FTA to process. Submitting by Q3 2026 creates comfortable headroom before the 31 December 2026 absolute deadline. Applications filed in December 2026 risk running out of time if the FTA requests supplementary documentation.

Step 4: Build Guiding Decisions tracking into monthly compliance

Article 54 BIS gives FTA Guiding Decisions explicit legal weight. Add a monthly review step to scan newly published Guiding Decisions on the FTA portal. Update compliance positions and audit defence documentation where a new decision touches existing practice.

Step 5: Apply Article 10(5) for minor procedural corrections

For errors that do not affect the amount of Due Tax, use the refined Article 10(5) mechanism to correct through subsequent returns rather than formal voluntary disclosure.

Document every such correction with a note on what the error was, why Article 10(5) was used instead of a voluntary disclosure, and what was corrected. This documentation defends the approach if the FTA later questions it.

Step 6: Extend document retention for complex historical positions

The statutory minimum under the Tax Procedures Law (FDL 28/2022) is 5 years for taxable persons. Corporate Tax records under FDL 47/2022 require 7 years, and real estate VAT records require 15 years.

Businesses with complex historical positions should retain records for 10–15 years to cover the potential FTA assessment window. Financial record keeping standards apply across all periods potentially in scope.

The changes worth memorising

[[chart:assessment-window-comparison]]

Deadlines you can’t miss

[[chart:key-2026-deadlines]]

What it costs when this goes wrong

Cabinet Decision No. 129 of 2025 (effective 14 April 2026) sets the administrative penalty structure that operates within the reformed tax procedures law. The table below covers the key penalty interaction points for businesses navigating the 2026 procedural changes.

For a full breakdown of the penalty schedule, see the UAE corporate tax penalties guide.

Example: an AED 80,000 lapsed refund recovered before 31 Dec 2026

A Dubai mainland trading company has three open VAT credit balances on EmaraTax as of January 2026:

Action required:

The AED 14,200 credit (expired March 2025) and the AED 8,600 credit (expiring September 2026) both fall inside the transitional grace period. Combined recovery: AED 22,800. Both must be claimed via EmaraTax before 31 December 2026. Target submission: August 2026 to allow for FTA processing.

The AED 22,400 credit from 2023 is well within the standard 5-year window and can be claimed in the normal course. No urgency, but it should appear on a quarterly credit-balance tracker.

Without the transitional grace period, the AED 14,200 credit would already be gone. The window from FDL 17/2025 is a genuine opportunity — but it closes absolutely on 31 December 2026. Businesses that delay until Q4 risk the FTA requesting supplementary documentation that cannot be turned around in time.

Guiding Decisions are binding now — what that actually changes

Article 54 BIS is brand new. Before FDL 17/2025, the FTA issued clarifications and public clarification notices that advisors treated as persuasive but not formally binding. Courts would consider them. FTA auditors were not always bound by their own earlier guidance.

Now Guiding Decisions on how UAE tax laws apply to specific transactions carry explicit legal weight. Structure a transaction in line with a published Guiding Decision and you can cite it as a direct defence during an audit. That’s a genuinely useful shift for advisors — for years we argued over what an unofficial clarification “really meant,” and now there’s something solid to point at.

Corporate tax provisions get the same treatment once a relevant decision lands. So far the early focus has been VAT.

The formalisation also opens a new door: if a taxpayer believes a Guiding Decision misreads the underlying law, the decision can be challenged through the standard FTA objection and appeal process. Informal guidance never had that route.

Guiding Decisions clarify how the law applies — they do not override the law. A Guiding Decision that conflicts with the plain text of the UAE VAT Law or the Tax Procedures Law remains challengeable, and the courts have consistently held that the source of tax liability is the statute itself (UAE Federal Supreme Court No. 277/2022). Build positions on the law first, then use Guiding Decisions as interpretive support.

Where we see UAE businesses slip up in the transition

The one that costs the most is waiting until December to submit transitional refund claims. The FTA takes 60 to 90 days to process a refund and may ask for supplementary documentation partway through, so a December submission risks simply running out of runway. Get them in by Q3 2026. A close second is assuming aggressive historical positions will time-bar safely. Plenty of businesses held those positions under the old 5-year limit confident they’d lapse, and the 15-year window for evasion cases pulls that assumption apart, so it’s worth reviewing anything approaching the old 5-year mark and weighing proactive voluntary disclosure under the favourable penalty framework.

We also see Guiding Decisions treated as optional reading. Article 54 BIS makes them legally binding, which means a compliance position that contradicts a published decision is now challengeable by the FTA on that basis alone, so the monthly scan of the FTA portal has stopped being housekeeping and become core compliance. In the same vein, businesses lean on Article 10(5) without documentation; the simplified correction channel runs on contemporaneous records, and if the FTA later asks whether a correction actually qualified, an undocumented one has no defence. The last trap is implementing the procedural reform in isolation. FDL 17/2025, FDL 16/2025 on VAT, CD 129/2025 on penalties and CD 106/2025 on e-invoicing were designed as one package, and applying one without the others leaves gaps; our UAE VAT amendments 2026 guide covers the substantive VAT layer that sits on top of the procedural framework.

If you’re an SME finance lead, do this now

Before the end of 2026, FDL 17/2025 really asks for three things from a UAE business owner.

The first is to recover what you’re owed now. Any VAT credit balance that’s been sitting on EmaraTax for more than three years deserves a review, and if it expires before 31 December 2026 it falls into the grace period and has to be claimed this year. The second is to close out historical risk. Any period where transactions may not have been fully reported, or where you registered late, now sits under a much longer FTA scrutiny window, and voluntary disclosure before an audit notification lands is far cheaper than being found; the FTA audit readiness guide covers what triggers a review and how to prepare for one. The third is to build Guiding Decisions tracking into your compliance calendar. It’s thirty minutes a month, and skipping it means a settled compliance position can go invalid the moment the FTA publishes a decision on the same issue.

Underneath all three is the same shift: the relevant tax period now drives your exposure window, whether that’s the period a credit arose in, an error was made in, or a position was taken. Knowing which periods are in scope for each obligation has stopped being optional.

For businesses that need help mapping credit balances, reviewing historical positions or integrating the procedural reforms with broader UAE tax compliance work, Velmont Crest’s UAE compliance team provides VAT services in Dubai and corporate tax services aligned with the 2026 reform package.

Reading FDL 28/2022 alongside the 2026 amendments

Federal Decree-Law No. 28 of 2022 on Tax Procedures was issued on 30 September 2022 and took effect from 1 March 2023. It replaced the earlier Federal Law No. 7 of 2017 as the foundational procedural statute for UAE federal taxation.

The law governs every administrative interaction between a taxpayer and the Federal Tax Authority across VAT, Excise Tax, and Corporate Tax. It defines the powers of the FTA, the obligations of the taxable person, the rules for tax registration and de-registration, the conduct of audits and assessments, the calculation of penalties, and the rights of appeal.

Cabinet Decision No. 74 of 2023 issued the Executive Regulation of Federal Decree-Law No. 28 of 2022. It provides operational detail on tax agents, record-keeping, FTA notifications, voluntary disclosure procedures, and the assessment process.

The Executive Regulation is the document an FTA auditor will reference during a fieldwork visit. It is also the document a taxpayer will rely on when challenging an assessment.

Read together, the primary law and the Executive Regulation set up the procedural framework that the substantive tax laws operate within — Federal Decree-Law No. 8 of 2017 on VAT, Federal Decree-Law No. 7 of 2017 on Excise Tax, and Federal Decree-Law No. 47 of 2022 on Corporate Tax. When any of those substantive laws is amended, the procedural backbone in FDL 28/2022 typically remains the operative reference for administration, audit, and appeal.

How Cabinet Decision 17/2026 fills the operational gaps

The reform package effective from 1 January 2026 is built around Federal Decree-Law No. 17 of 2025. The law was issued on 1 October 2025 and published in Official Gazette Issue 809 on 14 October 2025.

It amends Articles 9(3), 10(5), 38, and 46 of Federal Decree-Law No. 28 of 2022, introduces a new Article 54 BIS, and repeals the parallel limitation provision in Article 25 BIS of the Excise Tax Law. The aim is to consolidate all limitation rules under the Tax Procedures Law.

Cabinet Decision No. 129 of 2025, effective 14 April 2026, operationalises the administrative penalty framework that sits alongside the procedural reform. The penalty schedule covers voluntary disclosure penalty tiers, late filing and late payment penalties, and the revised treatment of zero-tax-impact errors under the amended Article 10(5) mechanism.

Together with the e-invoicing framework under Cabinet Decision No. 106 of 2025 and the VAT amendments under Federal Decree-Law No. 16 of 2025, the four instruments form the integrated 2026 reform package that every UAE tax-registered business needs to absorb.

The repeal of Article 25 BIS of the Excise Tax Law is particularly significant. Before the repeal, excise tax operated under a separate limitation regime that occasionally produced different outcomes from the VAT framework.

From 1 January 2026, all UAE federal taxes — VAT, Excise Tax, Corporate Tax — share the same procedural limitations under Article 46 of FDL 28/2022 as amended. This consolidation removes a recurring source of confusion and aligns the assessment risk profile across regimes.

Who counts as a UAE tax resident

The concept of tax residency runs through the Tax Procedures Law and the substantive tax laws as the gateway to most filing and payment obligations. The UAE framework was formalised by Cabinet Decision No. 85 of 2022 on the Determination of Tax Residency and supplemented by Ministerial Decision No. 27 of 2023.

A natural person is treated as a UAE tax resident on any one of a few grounds. The broadest is having their usual or primary place of residence and the centre of their financial and personal interests in the UAE. Failing that, physical presence of 183 days or more in a relevant 12-month period does it. And a shorter stay of 90 days or more still qualifies where the person holds UAE nationality, residency, or a permanent place of work here.

A juridical person is a UAE tax resident if it is incorporated, formed, or recognised under UAE legislation (including free zones), or if it is effectively managed and controlled in the UAE. The effective-management-and-control test brings foreign companies into UAE residency where strategic decisions are taken in the UAE — typically at board level — even where the legal incorporation sits elsewhere.

Tax residency under the UAE rules also unlocks access to UAE double tax treaty benefits. The FTA issues Tax Residency Certificates to qualifying residents on application through EmaraTax. Documentary requirements vary by certificate purpose (domestic versus treaty).

A treaty TRC application usually needs evidence of physical presence such as entry stamps and a residency visa, evidence of genuine UAE economic substance like utility bills, a lease or payroll, and bank statements showing that financial activity is actually running through the UAE.

For the FTA’s procedural purposes, the tax residency determination is the prerequisite check before any assessment, audit, or refund interaction. A non-resident contesting a UAE tax position needs to first establish the residency status under both domestic UAE rules and any applicable tax treaty.

When an FTA notice lands, what happens next

The assessment cycle under the amended Tax Procedures Law follows a defined sequence, and each stage carries its own documentary triggers. Managing the rights and obligations at each one is where cases are won or lost, since silence or a missed response almost always defaults to an adverse outcome.

It opens with an audit notification. The FTA sends a written notice at least 10 business days before it starts an audit, though where evasion is suspected that notice can be shortened or dropped entirely. The notification tells you which tax periods are under review, which documents you need to produce, and how long the audit is expected to run. During the audit itself the FTA can issue formal information requests, usually giving 5 to 10 business days to produce documents; miss that deadline and the FTA is free to assess on a best-judgement basis using whatever data it already holds.

When the audit wraps up, a draft assessment lands. It sets out the proposed adjustments, the tax it calculates as owed, the penalties it intends to impose and the legal basis for each item, and you get 20 business days to comment. The FTA then weighs those comments and issues the final assessment, which is enforceable from the date of issue, with the assessed tax falling due inside the standard payment window. If you dispute it, you can file a reconsideration request straight to the FTA within 40 business days of being notified, and the FTA has its own 40 business days to decide. That stage is administrative and handled entirely inside the FTA, so it doesn’t need external counsel to run.

The FTA’s published procedural standards have tightened consistently since FDL 28/2022 came into force. The introduction of binding Guiding Decisions under Article 54 BIS adds further structure to how the FTA will interpret recurring fact patterns during audits.

For a detailed treatment of audit preparation, the FTA tax audit UAE guide covers the document checklists and the practical steps that reduce assessment risk.

Objecting, appealing, and taking it to court

If the reconsideration outcome still doesn’t satisfy you, the next stop is the Tax Disputes Resolution Committee, an independent body established under the Ministry of Justice. The TDRC runs a strictly time-bound process and there’s no skipping it, because no tax dispute reaches court without passing through it first.

The objection has to be filed with the TDRC within 40 business days of being notified of the FTA’s reconsideration decision, and two conditions gate it: you must already have submitted a valid reconsideration request, and you must pay the full disputed tax, though not the penalties, before the TDRC will even accept the file. Once it does, the Committee has 20 business days to decide, extendable once by a further 20 where it needs more review time, and both sides are told of the outcome within 5 business days of issue. If the total tax and penalties in dispute come to AED 100,000 or less, that decision is final and binding on everyone. Above that figure, either party can take it to the Federal Court of First Instance.

A court appeal, if it comes to that, has to be filed within 40 business days of being notified of the TDRC decision, and the court is the first forum with full judicial review of the dispute on both fact and law. Beyond it, further appeals run to the Court of Appeal and, on points of law, to the Federal Supreme Court, or the equivalent emirate-level supreme court for Dubai-seated disputes.

No tax dispute can proceed to court unless it has first passed through the TDRC. The chain — reconsideration, then objection to TDRC, then court appeal — is mandatory and sequential. Missing any of the deadlines extinguishes the right to pursue the dispute further.

For procedural questions about the FTA’s contact channels, escalation routes, and the documentary requirements at each stage, the how to contact FTA UAE guide covers the practical access points.

Why five years is the wrong number to plan around

Federal Decree-Law No. 28 of 2022, Article 78, and Cabinet Decision No. 74 of 2023 set the baseline record-retention obligation at 5 years for taxable persons, measured from the end of the relevant tax period. Treat that 5 years as the floor rather than the ceiling, because several overlays push the real retention period higher for different categories of record.

Corporate Tax records are the clearest of them. Federal Decree-Law No. 47 of 2022, Article 56, requires them for 7 years from the end of the relevant tax period, and that requirement supersedes the 5-year Tax Procedures Law baseline for anything falling within Corporate Tax scope. Records tied to capital assets and real estate transactions go further still: the UAE VAT Executive Regulations put them at 15 years, long enough to support the capital assets scheme adjustments that run across an asset’s economic life. On top of the category rules, the clock itself can stretch. If the FTA opens an audit or you enter a dispute in the fifth year, the retention period extends by up to four more years to cover the full lifecycle, with a further one-year extension where a voluntary disclosure goes in during that fifth year. And where evasion risk is in play, FDL 17/2025 pushes the assessment window out to 15 years, so any historical period that could be reopened under it should have its underlying records held for the full 15-year horizon to keep the original position defensible.

For most SMEs the practical answer is to settle on 10 years across all federal tax records as the safe universal standard, then stretch to 15 for real estate and capital assets records and for any business carrying material historical risk.

Cloud-based document storage has made longer retention administratively practical without significant cost increases. The financial record keeping UAE guide covers the practical implementation, including the file structure that satisfies an FTA audit on first request.

Velmont’s read on the 5-year and 15-year clocks

The statute of limitations under the amended Article 46 of FDL 28/2022 runs on two separate clocks, and which one applies comes down entirely to the conduct under review.

For taxpayers that registered on time, filed accurate returns and disclosed their transactions properly, the standard window holds at 5 years from the end of the relevant tax period. That’s the one that covers the vast majority of compliant businesses, and it’s unchanged from the pre-2026 framework. The longer clock only starts where the FTA establishes tax evasion, or a failure to register when registration was legally required, and there the window stretches to 15 years from the period end. It isn’t automatic; it takes an actual finding of evasion or non-registration. But once that finding is made, the assessment can reach back across the full 15 years to recover back-tax, penalties and interest.

Sitting apart from the assessment window is the refund clock, a hard 5 years from the period end to claim any credit balance. This one runs in a single direction. Credits not claimed inside the window lapse for good, and the only relief is the transitional 31 December 2026 grace period for credits that have already expired or are about to. There’s also the voluntary disclosure window to keep in view: spot an error before any FTA audit notification and you can disclose at any point within the relevant assessment window, and the penalty treatment under Cabinet Decision No. 129 of 2025 is far kinder to a pre-notification disclosure than to one filed after.

The link between the assessment window and the retention rule is direct, since records have to survive at least as long as the FTA can assess the period. For routine compliance, 5 to 7 years covers the baseline.

For any position that carries evasion risk — aggressive interpretations, deliberate non-disclosure, late registration — the 15-year window is the operative reference and records should be kept accordingly.

The broader corporate tax positioning into which these procedural reforms feed is summarised in the corporate tax UAE overview. For businesses needing dispute support, our corporate tax services page outlines the available advisory engagements. To discuss your specific exposure, book a consultation.

References

1. UAE Federal Tax Authority — EmaraTax filings, Guiding Decisions publications, refund procedures and tax procedures guidance.
2. UAE Ministry of Finance — Federal Decree-Law No. 17 of 2025 and the amended Federal Decree-Law No. 28 of 2022.
3. UAE Government Business Portal — Official guidance on business compliance in the UAE.