The UAE's federal Corporate Tax regime, introduced under Federal Decree-Law No. 47 of 2022, has now moved beyond the bedding-in years. The first full filing cycles have concluded for the majority of taxable persons, and the Federal Tax Authority (FTA) has issued a growing body of public clarifications, ministerial decisions, and Cabinet Decisions that shape how the rules apply in practice.
For accounting firms in the Emirates - and for UK firms with UAE-resident clients - Corporate Tax is now a recurring engagement type, not a one-off project. This guide sets out what senior practitioners need to keep in mind in 2026: the headline mechanics, the persons in scope, the Free Zone qualifying income regime, the documentation expectations, and the most common errors we see in client files.
Nothing in this article is a substitute for the FTA's published guidance, but it should give you a usable mental map for managing a Corporate Tax portfolio at scale.
The headline mechanics in 2026
UAE Corporate Tax applies at 0% on taxable income up to AED 375,000 and 9% on taxable income above that threshold for in-scope taxable persons. A separate regime is being developed to give effect to the OECD Pillar Two global minimum tax rules, which can impose a top-up tax on large multinational groups whose effective tax rate falls below 15% in any jurisdiction.
The tax is administered by the Federal Tax Authority, with payment and filing handled through the EmaraTax portal. The tax period is generally the financial year used for the entity's statutory accounts, and returns must be filed within nine months of the end of that period.
Who is a taxable person
The decree-law applies a broad definition of taxable persons, capturing both resident and non-resident entities. For accounting firms, the categories that matter most are usually:
- UAE-incorporated companies and other juridical persons, including LLCs and PJSCs
- Foreign juridical persons that are effectively managed and controlled in the UAE
- Natural persons (sole proprietors and professional licensees) conducting business in the UAE where annual turnover exceeds AED 1 million
- Non-residents with a permanent establishment in the UAE or UAE-sourced income meeting the relevant tests
- Qualifying Free Zone Persons, which sit inside the regime but on a specific track
Exempt persons and the public benefit list
Certain entities are exempt from Corporate Tax. Government entities, government-controlled entities listed by Cabinet Decision, extractive businesses, non-extractive natural resource businesses, qualifying public benefit entities, qualifying investment funds, and certain pension and social security funds can all fall within the exemptions.
Exemption is not automatic in every case. For example, qualifying public benefit entities must be listed in a Cabinet Decision, and qualifying investment funds must satisfy diversification, governance, and regulatory tests set out in Ministerial Decisions. The work of the firm is often as much about evidencing entitlement to an exemption as it is about computing tax - keep the supporting file in good order from day one.
Free Zone qualifying income
The Free Zone regime is the area where most practitioners spend the bulk of their interpretive time. A Qualifying Free Zone Person can benefit from a 0% rate on its qualifying income, with 9% applying to non-qualifying income, provided the entity meets the conditions in the decree-law and the related Cabinet and Ministerial Decisions.
Broadly, qualifying income includes transactions with other Free Zone persons (subject to beneficial ownership and not arising from excluded activities), and certain transactions with non-Free Zone persons that fall within designated qualifying activities. Excluded activities - for example, certain transactions with natural persons, regulated banking and insurance activities outside narrow exceptions, and ownership or exploitation of UAE immovable property - generally taint the regime if not properly contained within the de minimis rules.
Substance, de minimis, and the qualifying activities list
To remain a Qualifying Free Zone Person, the entity must maintain adequate substance in the Free Zone (people, assets, expenditure), satisfy the de minimis requirement on non-qualifying revenue, prepare audited financial statements, and comply with transfer pricing documentation obligations on a continuous basis.
In practice, the most common reason a Free Zone client loses qualifying status is mis-classified revenue. We see this where the operations team has booked work under a description that does not match the Cabinet Decision's qualifying activities list. A short review of the revenue ledger against the qualifying activities list, before year-end, is one of the highest-value reviews a firm can offer.
Registration, filing, and payment timelines
All taxable persons must register with the FTA and obtain a Tax Registration Number, including most Free Zone entities. The FTA has set tiered registration deadlines based on the licence issue month, and late registration carries an administrative penalty under Cabinet Decision No. 75 of 2023 (as amended).
Returns are due within nine months of the end of the tax period, and tax is payable by the same date. There are no provisional payments in the standard regime; the obligation is to file accurately and pay in full at the deadline. This concentrates cash-flow pressure on a single date - a useful planning point for advisory conversations.
Transfer pricing obligations
Transfer pricing applies to transactions with related parties and connected persons. The arm's length principle must be applied, and depending on the scale of the group, a local file, master file, and disclosure form may be required. Even smaller groups that fall below the formal documentation thresholds should keep contemporaneous evidence of how related-party prices were set, because the disclosure form requires summary information.
For owner-managed groups in particular, the transfer pricing rules also reach into salaries, management fees, and intra-group loans. A short transfer pricing memo per group, refreshed annually, is good practice and shows the FTA you have engaged with the rules.
Small Business Relief
Small Business Relief, set out in Ministerial Decision No. 73 of 2023, allows a resident taxable person with revenue at or below AED 3 million in the current and all previous tax periods (within the window prescribed) to be treated as having no taxable income, subject to election. This relief is unavailable to Qualifying Free Zone Persons and members of multinational enterprise groups in scope of Country-by-Country Reporting.
Small Business Relief is genuinely useful for owner-managed startups in their first years of trading, but it is also the area where we most often see clients leave money or compliance certainty on the table. Document the election, monitor the threshold, and plan the exit from relief in advance of breaching it.
Common errors we see in client files
A handful of issues come up repeatedly across the Corporate Tax engagements we review:
- Revenue mis-classified against the Free Zone qualifying activities list
- Related-party transactions not identified on the disclosure form, particularly with shareholders
- No board-level evidence of effective management and control for foreign-incorporated companies that genuinely run from the UAE
- Exempt income treated as fully exempt where the rules require a proportionate adjustment to expenses
- Pre-incorporation expenditure and capitalised assets treated inconsistently between the statutory accounts and the tax computation
What good looks like for an accounting firm in 2026
The firms doing this well are the ones that have moved Corporate Tax from a once-a-year computation into a continuous compliance product. That means a standard onboarding checklist per client type, a quarterly substance and transfer pricing review for Free Zone clients, a clear file structure, and a fee model that reflects the work rather than the size of the resulting computation.
It also means investing in the documentation layer. The FTA has been clear in its public clarifications that the burden of proof for reliefs, exemptions, and Free Zone qualifying status sits with the taxpayer. The audit trail you build today is the defence file you will rely on in two or three years' time.
How Accupe helps
Accupe gives UAE firms a single workspace to run Corporate Tax engagements end to end - client onboarding with AML/KYC screening via OpenSanctions, Smart Boards to govern the workflow, encrypted client messaging for sensitive correspondence, AI document analysis with source citation across uploaded ledgers and contracts, and built-in e-signatures for engagement letters and tax computations. The Compliance Radar gives partners a real-time view of where each client sits in the Corporate Tax cycle. Per-firm pricing from £20/month makes it accessible to practices of any size.