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The UAE Federal Tax Authority (FTA) has issued a timely reminder for businesses whose financial year ended on 31 December 2025: their Corporate Tax return must be filed and any Corporate Tax due must be paid no later than 30 September 2026. The same statutory timeframe applies to eligible Small Business Relief taxpayers, who must still register, submit a simplified return and retain the records supporting their eligibility and disclosures.

With the deadline approaching, the right question is not simply whether a return can be submitted through EmaraTax. The better question is whether the return can be explained, reconciled and defended if the FTA asks how the figures were produced.

This article sets out a practical evidence and control playbook for UAE businesses. It is not a substitute for advice on a particular taxpayer’s facts, elections or transactions. The governing legislation, FTA guidance and the taxpayer’s own circumstances must always be reviewed before filing.

1. Start with the statutory clock, not the accounting year-end

The FTA’s 2 September 2026 announcement states that Taxable Persons must file their Tax Returns and pay Corporate Tax within a period not exceeding nine months from the end of their Tax Period. For a Tax Period ending on 31 December 2025, that produces a 30 September 2026 deadline.

The deadline has two separate consequences. First, the return must be submitted. Second, the tax shown as payable must be paid. A business that completes only one of those steps has not completed its compliance obligation. Filing should therefore be treated as a controlled close process with a payment confirmation, not as an online form completed at the last minute.

Businesses should confirm the actual Tax Period in the FTA registration and accounting records. A calendar-year assumption is unsafe where a company has an approved non-calendar financial year, a newly incorporated period, a restructuring, a change in accounting reference date or a tax-group arrangement. The responsible finance person should record the applicable period end, filing deadline, reviewer and payment owner in a simple deadline register.

2. Build a return bridge from accounts to taxable income

The starting point is the financial statements or trial balance prepared under the company’s accounting framework. The destination is the taxable income reported in the Corporate Tax return. Between those points, management needs a visible bridge.

A useful bridge normally includes:

• accounting profit or loss before tax;
• income that is exempt or subject to specific treatment;
• dividends and other participation-related items, where the relevant conditions are met;
• gains or losses requiring a tax adjustment;
• expenses that are wholly or partly non-deductible;
• entertainment and business expenditure requiring review;
• interest deduction limitation calculations, where applicable;
• related-party and connected-person adjustments;
• brought-forward tax losses and any restriction on their use;
• elections made under the Corporate Tax rules; and
• the resulting Taxable Income and Corporate Tax liability.

The bridge is more than a working paper. It provides a common language between the accountant, tax adviser, reviewer and management. Every material adjustment should have an owner, a calculation, a source document and a short explanation written in plain language.

A recurring weakness is the unexplained “other adjustments” line. A large unexplained total may allow the return to balance, but it does not create a reliable audit trail. Break the line into identifiable adjustments and retain the supporting schedule behind each one.

3. Reconcile the return to the ledger and the bank reality

Before tax calculations are finalised, finance should reconcile the return data to the general ledger and trial balance. The reconciliation should be performed at the level that makes unusual movements visible, rather than only comparing one final total.

At minimum, review revenue by major stream, cost of sales, payroll, rent, professional fees, finance costs, depreciation, provisions, related-party balances and exceptional items. Compare the current period with the prior period and budget. A change is not automatically wrong, but a material change needs a documented reason.

Bank reconciliations are equally important. Revenue recorded in the accounts should be considered alongside cash receipts, receivables, credit notes and contract terms. Large unexplained deposits, shareholder funding, intercompany transfers and customer advances should be classified correctly. The objective is not to treat bank movement as taxable income automatically. It is to ensure that the accounting explanation is complete and consistent with the underlying records.

The reviewer should sign off three separate questions:

1. Does the return agree to the final approved trial balance?
2. Do the major balances have reconciliations and explanations?
3. Are the tax adjustments traceable to both the ledger and source evidence?

4. Small Business Relief is not a filing exemption

The FTA specifically reminded persons eligible for Small Business Relief that they must still meet their Corporate Tax compliance obligations. Those obligations include Corporate Tax registration, filing a simplified Tax Return and maintaining documents supporting the accuracy of the information provided.

This distinction matters. Relief from Corporate Tax in a qualifying period does not mean that a business can ignore the return, its revenue calculation or the evidence supporting eligibility. A business should calculate revenue using the applicable rules, confirm the relevant period and preserve the records needed to show how it reached the conclusion.

The file should include the revenue report used for the eligibility assessment, the accounting export, adjustments or exclusions, ownership and entity information relevant to the election, and a management approval of the position taken. If the taxpayer operates through multiple entities or has related businesses, the group structure and transactions should be reviewed rather than assuming that each entity can be assessed in isolation.

Small Business Relief decisions should be documented as a tax position, not as an informal note saying “no tax payable.” That distinction becomes important if revenue later exceeds the applicable threshold, if an election changes, or if the FTA asks how the taxpayer determined its eligibility.

5. Test related-party and connected-person transactions

A return review should identify transactions that are not ordinary third-party dealings. Examples include management charges, loans, shareholder balances, property use, guarantees, shared employees, reimbursements, royalties and purchases or sales involving related entities.

For each material transaction, retain the agreement, invoice, calculation, payment trail and business rationale. Where an arm’s-length analysis or transfer-pricing documentation is relevant, the file should explain the method used, the tested facts and the conclusion. A journal entry alone is not an adequate explanation for a recurring related-party charge.

The review should also look for year-end balances that have been carried forward for several periods. Old shareholder receivables, unexplained intercompany balances and recurring management fees with no agreement can create both tax and financial-reporting questions. Decide whether the balance is a genuine receivable, a loan, an expense allocation, a capital contribution or an error, and record the evidence for that conclusion.

6. Review deductions with a materiality lens

A tax file should not treat every expense as equally risky. Focus first on categories where classification, business purpose, documentation or deductibility commonly require judgement.

Professional fees should be linked to an engagement or invoice. Travel and entertainment should identify the business purpose, participants where appropriate and supporting receipts. Repairs should be separated from capital expenditure. Provisions and impairment charges should be assessed against the applicable tax treatment rather than accepted simply because they appear in the accounts. Finance costs require particular attention where interest limitation rules or related-party financing are relevant.

The practical control is a deduction matrix. For each significant category, list the ledger account, accounting amount, tax treatment, supporting documents, reviewer and unresolved question. This makes it easier to distinguish a genuine tax adjustment from an accounting classification issue.

Materiality should guide the depth of review, but it should not be used to rationalise unsupported positions. A small recurring error can also reveal a broken process, especially where the same treatment is repeated every month.

7. Keep an evidence file that another person can use

The best evidence file is not the largest file. It is the file in which another finance professional can reproduce the return without relying on the preparer’s memory.

A practical index may contain:

1. FTA registration and Tax Period confirmation.
2. Approved financial statements and final trial balance.
3. General-ledger export and chart of accounts.
4. Accounting-to-taxable-income reconciliation.
5. Revenue and bank reconciliations.
6. Tax adjustment schedules.
7. Loss, interest and election schedules, where relevant.
8. Related-party and connected-person transaction register.
9. Small Business Relief eligibility analysis, where relevant.
10. Corporate Tax return review checklist.
11. Management approval and unresolved-items log.
12. EmaraTax submission receipt and payment confirmation.

Keep the evidence in a controlled location with clear naming and version dates. Do not allow the final return to depend on spreadsheets stored in one employee’s personal folder. If a calculation changes, preserve the final approved version and record why it changed.

The FTA announcement also underlines the importance of maintaining records supporting the accuracy of information provided in returns and other required documents. Record retention is therefore part of the filing obligation, not a project to begin only after an enquiry arrives.

8. Use a four-stage review before submission

A robust deadline process can be run in four stages.

Stage one: preparation. Close the ledger, reconcile key accounts and assemble source documents. Identify missing evidence early.

Stage two: tax review. Prepare the tax bridge, assess deductions and exemptions, review losses and interest, and document related-party positions.

Stage three: independent challenge. A person who did not prepare the return should review the major numbers, unusual movements, adjustments, elections and payment amount. The reviewer should ask what evidence would be produced if each material position were challenged.

Stage four: submission and post-submission control. Submit through EmaraTax, pay the amount due, save the receipts and lock the final evidence file. Record any follow-up item and the owner responsible for resolving it.

Do not leave payment approval until the final afternoon. Banking limits, dual authorisation, public holidays, portal access issues and incorrect beneficiary details can create avoidable operational risk even when the tax calculation is complete.

9. What to do if the file is not ready

A business should not invent evidence or delay indefinitely because one document is missing. First, identify whether the missing item affects a material tax position. Second, escalate the position to the responsible reviewer or tax adviser. Third, document the estimate, limitation and follow-up action if the applicable rules permit filing on the available information.

This is different from knowingly submitting an unsupported or inaccurate return. Where a material error is discovered after filing, obtain advice on the appropriate correction or disclosure route. Keep a written record of the issue, the date identified, the affected period, the amount involved and the action taken.

Conclusion

The 30 September 2026 deadline is a filing and payment deadline for taxpayers with 31 December 2025 year ends. It is also a practical test of whether the business has converted its accounting records into a controlled tax position.

A reliable Corporate Tax process has three characteristics: the numbers reconcile, the adjustments are explained and the evidence can be retrieved. Small Business Relief does not remove those disciplines. Nor does a clean-looking return prove that the underlying process is sound.

Businesses should use this deadline to improve the next cycle. Maintain the tax bridge monthly, review related-party balances before year-end, keep evidence with the calculation and assign an independent reviewer. Good tax compliance is not a form-filing event. It is a repeatable finance control.

Sources checked: UAE Federal Tax Authority, “Federal Tax Authority Calls on All Persons subject to Corporate Tax to File Their Tax Returns and Pay the Corporate Tax Due Within the Specified Timeframes to Avoid Late-Payment Penalties,” 2 September 2026; FTA Corporate Tax Returns Guide; FTA Corporate Tax guides, references and public clarifications; UAE Corporate Tax legislation and related implementing guidance.