How to calculate corporate tax in UAE starts with a figure many owners overlook: taxable income. It is not the profit visible in the bank balance or the management accounts. Once the adjustments are clear, the arithmetic is simple. This article sets out the formula, works through three cases, and points to the adjustments that most often change the answer.
Calculate Corporate Tax, Step by the Step
The calculation follows a fixed order. The starting point is the profit shown in the company’s accounts. Next, add back expenses the law does not allow as deductions, and remove exempt income. Then deduct any tax losses carried forward, within the limits that apply. The result is taxable income. Finally, apply the rates: 0% on the first AED 375,000 and 9% on the portion above it.
In short form, corporate tax equals 9% of taxable income above AED 375,000. Taxable income that does not exceed the threshold produces no liability.
Table 1: Corporate tax bands
| Taxable Income | Rate | Tax Payable |
| Up to AED 375,000 | 0% | No liability |
| Above AED 375,000 | 9% | 9% on the excess over AED 375,000 |
Example One: A Mainland LLC
A mainland trading LLC reports accounting profit of AED 500,000 for a December year-end. Its accounts include a AED 10,000 penalty paid to a government authority. Fines paid to a government body cannot be claimed as a cost, so the figure goes back into the profit. Taxable income becomes AED 510,000. Income up to AED 375,000 sits in the nil-rate bracket. The remaining AED 135,000 is taxed at 9%, which gives tax of AED 12,150.
Example Two: A Qualifying Free Zone Person
A free zone company earns AED 900,000 in total profit. Of that, AED 600,000 comes from qualifying income, such as qualifying transactions with other free zone entities. The remaining AED 300,000 comes from non-qualifying sources. Qualifying income is taxed at 0%. Non-qualifying income is taxed at 9%, and the AED 375,000 threshold does not apply to it. Tax payable is therefore 9% of AED 300,000, which equals AED 27,000. The split matters, so the records must show which income belongs to each category.
Example Three: Small Business Relief
A consultancy reports revenue of AED 2,400,000 and taxable income of AED 180,000. If it qualifies and elects small business relief, it can be treated as having no taxable income for the period, which reduces tax to nil. Eligibility depends on revenue limits and other conditions. The election also affects losses, so review those consequences before filing.
Table 2: Summary of the three worked cases
| Case | Income used for the calculation | Tax payable |
| Mainland LLC | Taxable income of AED 510,000 | AED 12,150 |
| Qualifying free zone person | Non-qualifying income of AED 300,000 | AED 27,000 |
| Small business relief (elected) | Taxable income of AED 180,000, treated as nil | Nil |
Adjustments That Change the Answer
Most errors come from adjustments rather than arithmetic. Non-deductible expenses, such as certain fines and entertainment costs, increase taxable income. Exempt income, such as qualifying dividends and gains on qualifying shareholdings, reduces it. Depreciation and provisions often follow different rules in the accounts and the tax computation, which calls for a reconciliation. Losses brought forward can lower the figure, but only within the restrictions that apply. Keep a schedule of every adjustment, because the return needs to show each one.
Try Our Calculator
The NovaFin calculator takes your accounting profit, adjustments and loss position, then estimates your liability. Enter your figures and we send the result to your email, so you can review it with your advisers. Treat the figure as a forecast for budgeting, not a submitted tax return. Running it early shows the likely range while there is still time to act.
Errors Worth Checking Before You File
Two errors come up repeatedly. Some owners test the AED 375,000 figure against revenue, which is incorrect. Others apply 9% to the whole profit rather than only the portion above the threshold. A quieter problem is a mismatch between the financial statements and the return, which often triggers queries months later.
A practical check helps before you file. Compare the taxable income figure with the accounting profit and list every difference on one page. If the list is short and each line has a source document, the computation is usually sound. If it runs long, that is the place to review first, because long reconciliations tend to hide the largest errors.
Frequently Asked Questions
Is the calculation based on revenue?
No. It starts from accounting profit and moves to taxable income through adjustments.
What counts as an adjustment?
Non-deductible expenses, exempt income and differences between accounting and tax treatment, such as depreciation.
Can losses reduce my tax?
They can, within the limits set by the rules. Confirm the cap on how much prior-year loss you can use in any one period.
Is the threshold applied per company?
Each taxable person applies its own threshold. Group and related-party rules can change the position, so review them with an adviser.
What happens if I change my financial year?
The change can create a shorter period, and the threshold and deadlines may need separate treatment. Confirm the approach before making the change.
Does the calculator count as a return?
The tool gives a projection from the figures you enter. A formal return is prepared and submitted separately.
Working With NovaFin
NovaFin prepares corporate tax computations, reviews adjustments and supports return filing through EmaraTax. We reconcile the accounts to the return and flag positions that need a decision from you. Contact our team to review your figures before the deadline.
Nothing here replaces personalised advice. Confirm the latest rules and dates directly with the Federal Tax Authority before acting.
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