If you run a company in the UAE, corporate tax registration isn't optional even if the tax you owe works out to zero. The rules are more forgiving than most jurisdictions, but the compliance side (registration deadlines, filing windows, and free zone qualifying income rules) is where businesses get caught out. This guide walks through what actually applies to your business, in plain terms, and where Probiz can take the compliance work off your plate.

What Is UAE Corporate Tax?

UAE corporate tax is a federal tax on the net profit of businesses, introduced for financial years starting on or after 1 June 2023 and administered by the Federal Tax Authority (FTA). It applies on top of VAT, not instead of it the two are separate obligations with separate registrations and filings.

Who Needs to Register for Corporate Tax?

• UAE mainland companies of any size
• Free zone companies — even those expecting to pay 0% still have to register
• Branches of foreign companies with a taxable presence in the UAE
• Individuals conducting business under a commercial licence, once their turnover from that business activity passes AED 1 million in a calendar year

Registration is mandatory regardless of whether tax is ultimately owed. Businesses that assume "we're a free zone company, we don't need to register" are the ones most likely to face penalties later.

Corporate Tax Rates

• 0% on taxable income up to AED 375,000
• 9% on taxable income above AED 375,000

This two-tier structure is designed to keep the tax burden light on small businesses and startups while applying a standard rate to larger profits one of the more competitive corporate tax regimes globally, alongside the UAE's continued 0% personal income tax.

How Free Zone Companies Are Taxed

Free zone companies aren't automatically tax-exempt they have to qualify. A Qualifying Free Zone Person (QFZP) that meets the conditions set by the FTA (adequate substance in the UAE, deriving qualifying income, and not electing out) continues to pay 0% on qualifying income. Income that falls outside the qualifying categories or if the conditions aren't met is taxed at the standard 9% rate above the AED 375,000 threshold, the same as a mainland company.

This is one of the most misunderstood parts of the law: holding a free zone licence does not by itself guarantee 0% tax. Whether your specific income qualifies depends on your activity, your customers, and how your business is structured this is exactly the kind of assessment worth getting right before you file, not after.

Small Business Relief

Businesses with revenue below a set threshold can elect Small Business Relief, which treats them as having no taxable income for that period simplifying compliance for very small operations. Eligibility depends on revenue thresholds and conditions set by the FTA, and the relief has defined time limits, so it's worth checking whether your business currently qualifies rather than assuming it applies indefinitely.

Registration, Filing and Payment Deadlines

• Registration is required for every taxable person, generally tied to your trade licence issuance date this should happen well ahead of your first tax period, not at the filing deadline.
• Filing your corporate tax return is due within 9 months of the end of your relevant tax period.
• Payment of any tax owed is due within the same 9-month window.
• Records must be kept for at least 7 years, including financial statements and supporting documentation.

Missing the registration deadline carries a fixed administrative penalty, and late filing or late payment adds further penalties that increase the longer the delay continues so the cost of getting this wrong compounds quickly, even for a business that ultimately owes little or no tax.

Who Is Exempt?

Certain entities are exempt from corporate tax by default or by application, including government entities, qualifying government-controlled entities, qualifying investment funds, pension and social security funds, and qualifying public benefit entities that meet the FTA's conditions. Most standard commercial businesses — mainland or free zone — do not fall into these categories and should assume registration applies to them.

Why Work With Probiz on Corporate Tax

• We handle your registration correctly the first time, avoiding late-registration penalties
• We assess whether your free zone income actually qualifies for the 0% rate a step many businesses skip until it's too late
• We manage your filing calendar so nothing is missed
• We pair this with your VAT and bookkeeping, so your tax position is handled as one system rather than three separate headaches

Frequently Asked Questions

Do free zone companies have to register for corporate tax?

Yes. Every taxable person, including free zone companies expecting to pay 0%, must register with the FTA. Registration is separate from whether tax is actually owed.

What is the UAE corporate tax rate?

0% applies to taxable income up to AED 375,000, and 9% applies to taxable income above that threshold. Qualifying Free Zone Persons may continue paying 0% on qualifying income specifically.

When is the corporate tax return due?

Within 9 months of the end of your business's relevant tax period. Payment of any tax owed is due within the same window.

What happens if I don't register on time?

Late registration carries a fixed administrative penalty, and late filing or payment adds further penalties. Registering promptly, even for a business expecting to owe 0%, avoids these costs entirely.

Does holding a free zone licence automatically mean 0% tax?

No. You need to qualify as a Qualifying Free Zone Person and your income needs to fall into a qualifying category. Income outside that scope is taxed at the standard 9% rate above AED 375,000, the same as a mainland company.

Is corporate tax the same as VAT?

No. VAT is a separate tax on the supply of goods and services, with its own registration threshold and filing schedule. A business can be registered for both, one, or neither depending on its activity and revenue.

How long do I need to keep tax records?

At least 7 years, including financial statements and supporting documentation for any position taken on your tax return.