If you run a business in the UAE, corporate tax is now part of life. The UAE introduced a 9% federal corporate tax for financial years starting on or after 1 June 2023, and 2026 is the first full year almost every business is filing under the regime. The math is not complicated once you understand the four brackets and the reliefs. This guide walks through it step by step, with a free UAE corporate tax calculator that does the work for you in 30 seconds and its on a site.
Step 1: Confirm You Are in Scope
UAE corporate tax applies to:
Mainland LLCs and other UAE-incorporated companies
Free zone companies (some qualify for 0% on Qualifying Income)
Branches of foreign companies operating in the UAE
Natural persons (freelancers, sole proprietors) with annual business revenue above AED 1,000,000
If your freelance or sole proprietor revenue is below AED 1,000,000 in the calendar year, you are not in scope and you do not need to register. If you crossed AED 1,000,000, you must register with the Federal Tax Authority through the EmaraTax portal within 3 months of the end of the calendar year. Late registration carries an automatic AED 10,000 penalty.
Step 2: Calculate Your Taxable Income
Corporate tax is calculated on net profit, not revenue. The formula:
Taxable Income = Total Revenue minus Deductible Expenses minus Exempt Income plus Non-deductible Expenses
Deductible expenses include rent, salaries, software subscriptions, professional fees, marketing costs, business travel, and equipment used in the business. Non-deductible items that get added back to profit include personal expenses, fines and penalties, and entertainment costs above the 50% allowed limit.
Keep records and receipts for 7 years. The FTA can audit any tax period inside that window.
Step 3: Apply the 0% and 9% Brackets
Once you have your taxable income, apply the brackets:
0% on the first AED 375,000 of taxable income
9% on every dirham of taxable income above AED 375,000
Example A. A consultancy with AED 600,000 taxable income.
First AED 375,000 taxed at 0% = AED 0
Remaining AED 225,000 taxed at 9% = AED 20,250
Total tax owed = AED 20,250
Example B. A trading company with AED 1,500,000 taxable income.
First AED 375,000 taxed at 0% = AED 0
Remaining AED 1,125,000 taxed at 9% = AED 101,250
Total tax owed = AED 101,250
Step 4: Check for Small Business Relief
If your gross revenue is AED 3,000,000 or less in the current tax period and every previous tax period since 1 June 2023, you can elect Small Business Relief and pay zero corporate tax for that period. The relief is available under Ministerial Decision No. 73 of 2023, but it expires on 31 December 2026. After that, all businesses pay the standard 0% and 9% rates regardless of revenue.
There is a critical catch most guides miss. If your revenue exceeded AED 3,000,000 in any tax period since 1 June 2023, you are permanently locked out of Small Business Relief, even if revenue drops back down later. Crossing the threshold once kills eligibility forever. There are also four scenarios where electing the relief actually costs you more in future years (loss carry-forward sacrifice, interest expense disallowance, restructuring complications, and free zone QFZP transitions). For the full breakdown, see this Small Business Relief decision guide.
Step 5: Check for QFZP Status (Free Zone Companies Only)
If your company is in a UAE free zone and qualifies as a Qualifying Free Zone Person, you pay 0% on Qualifying Income with no AED 3 million revenue cap. The conditions are strict: adequate substance in the zone, qualifying activities, transfer pricing compliance, and the de minimis rule (non-qualifying income must stay below 5% of total revenue or AED 5 million, whichever is lower).
Breach the de minimis rule and you lose QFZP status for the current year and the next 4 tax periods. That is a serious penalty, so QFZP planning matters.
Common Mistakes to Avoid
Forgetting to register on time. AED 10,000 penalty, no warnings, no grace period.
Confusing revenue with profit. The AED 3 million Small Business Relief threshold is gross revenue, not net profit.
Treating VAT and corporate tax as the same thing. They are separate taxes with separate registration thresholds (AED 375,000 for VAT, AED 1,000,000 for corporate tax on natural persons).
Missing the SBR election box on EmaraTax. Small Business Relief is not automatic. You have to actively tick the election box every tax period.
Assuming free zone equals 0% tax. Only QFZPs get 0%. Non-qualifying free zone companies pay the standard 9%.
Filing Deadlines
Your corporate tax return is due 9 months after the end of your financial year. For a company with a 31 December 2026 financial year end, the return is due by 30 September 2027. Tax payment is due on the same date. Late filing penalties start at AED 500 per month and escalate.
Calculate It Yourself
Rather than doing the math by hand, use a free UAE corporate tax calculator that applies all the rules above automatically, including QFZP status, Small Business Relief, prior-year loss carry-forward, and the AED 375,000 zero band. Enter your numbers, get your tax bill in 30 seconds.
The UAE corporate tax regime is straightforward once you have a system. The hard part is staying compliant with deadlines, electing the right reliefs, and keeping clean records. Get the math right early and your business runs smoothly through the regime.
