Mainland Corporate Tax Registration in UAE | An Easy Guide

If you run a business on the UAE mainland, corporate tax registration is no longer something you can put off. It is a legal requirement and one that comes with firm deadlines, real penalties for non-compliance, and ongoing obligations once you are registered. 

The good news? The process itself is straightforward, especially when you know what to expect. This guide covers everything you need to know about mainland corporate tax registration in the UAE, from who must register and when, to what documents you need, how the EmaraTax portal works, and what happens after you receive your Tax Registration Number. 

What Is Corporate Tax in the UAE?

The UAE introduced a federal corporate tax regime under Federal Decree-Law No. 47 of 2022, which came into effect for financial years beginning on or after 1 June 2023. The tax applies to the net profits of businesses and is administered by the Federal Tax Authority (FTA). 

The headline rate is straightforward: 

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

One important point that catches many business owners off guard: even if your profits fall below the AED 375,000 threshold and no tax is actually owed, registration is still mandatory. The law requires all taxable persons to register and file annual returns – there is no exemption from registration based on income. 

Who Must Register for Corporate Tax?

Corporate tax registration applies to a wide range of entities. For UAE mainland businesses specifically, the following must register: 

• All mainland companies, including LLCs, sole establishments, and civil companies
• Branches of foreign companies operating on the UAE mainland
• Natural persons (individuals) conducting licensed business activities with annual turnover exceeding AED 1 million, including freelancers and sole proprietors
• Partnerships and unincorporated entities conducting business in the UAE 

Note: UAE branches of a domestic company are considered extensions of the parent entity, they do not register or file separately. The parent company’s registration covers them. 

Free zone companies have a separate set of rules and may qualify for a 0% tax rate on qualifying income, though they are still required to register with the FTA and file annual returns. 

Corporate Tax Registration Deadlines

Deadlines for corporate tax registration are determined by when your trade license was issued and when your company was established. 

Existing Businesses (Established Before 1 March 2024)

Businesses already operating before 1 March 2024 were required to register based on a phased timeline linked to their trade license issue date. These deadlines have now passed. If you have not yet registered, you are already in breach of FTA regulations and the AED 10,000 penalty for late registration applies immediately. 

New Businesses (Established on or After 1 March 2024)

If your company was incorporated on or after 1 March 2024, you must register within 3 months of your establishment date. This is a firm deadline, as missing it triggers the same AED 10,000 administrative penalty. 

Natural Persons (Individuals)

If you are an individual conducting licensed business activity and your turnover exceeded AED 1 million in a given calendar year, you must register by 31 March of the following year. For example, if your 2025 annual turnover exceeded AED 1 million, you were required to register by 31 March 2026. 

Documents Required for Corporate Tax Registration

Before you begin the registration process on the EmaraTax portal, prepare the following documents as clear PDF or JPEG copies. Having them ready in advance prevents delays and avoids incomplete submissions: 

• Valid trade licence(s) – all licences, including those for branches
• Memorandum of Association (MoA) and/or Articles of Association (AoA)
• Passport copies and Emirates IDs of the authorised signatory and key shareholders
• Establishment card (if applicable)
• VAT Tax Registration Number (TRN), if your business is already VAT-registered
• Details of the financial year end date (e.g. 31 December or 30 June)
• Ultimate Beneficial Owner (UBO) information, where applicable 

The details on every document must match what you enter on the registration form exactly. Any mismatch between your trade licence and your EmaraTax application, even minor discrepancies in company name or licence number, is the most common reason the FTA returns applications for correction. 

How to Register for Corporate Tax: Step-by-Step on EmaraTax

All mainland corporate tax registration in the UAE is done through the FTA’s EmaraTax portal (eservices.tax.gov.ae). The portal is available 24/7 and the registration process itself is estimated to take around 25 minutes once your documents are in order. 

1. Log in or create an account

Access EmaraTax using your UAE PASS credentials or your FTA username and password. New users will need to create a profile first. If your business is already VAT-registered, your entity may be partially pre-filled. 

2. Select Corporate Tax registration

Navigate to the corporate tax section on your dashboard and click ‘Register’. You will be prompted to confirm whether you are registering as a mainland company, free zone entity, or branch of a foreign company. 

3. Fill in entity details

Enter your company’s legal name, trade licence information, date of incorporation, business activities, and financial year end date. All details must match your trade licence precisely. 

4. Upload supporting documents

The portal will prompt you to upload your documents at multiple stages. Ensure files are under 15MB each and are clear and legible. 

5. Review and submit

Double-check all information before submitting. Once submitted, you can track your application status via your EmaraTax dashboard. 

6. Receive your Corporate Tax Registration Number (CTRN)

Upon approval, you will receive a digital Corporate Tax Registration Certificate containing your 15-digit CTRN. A straightforward mainland LLC application can be approved within days, though more complex applications may take longer. 

Important: VAT registration and corporate tax registration are two completely separate legal obligations. Having a VAT TRN does not mean you are registered for corporate tax. You must complete both registrations independently. 

Penalties for Late or Non-Registration

The FTA updated its administrative penalty framework under Cabinet Decision No. 129 of 2025, which took effect on 14 April 2026. The revised structure is stricter and more systematic than before. Key penalties to be aware of: 

• AED 10,000 for failure to register within the prescribed deadline
• AED 1,000 for late updates to tax records or registration details on EmaraTax
• AED 500 for an incorrect corporate tax return submission (first-time errors; repeated errors attract higher penalties)
• 14% per annum flat interest rate on late corporate tax payments, calculated daily until settled 

The FTA has also significantly increased enforcement activity, conducting over 176,000 market inspection visits in 2025 alone, up 89% year-on-year. Non-compliance is no longer likely to go unnoticed. 

After Registration: Your Ongoing Obligations

Receiving your CTRN is just the beginning. Once registered, your business must meet a set of continuing compliance requirements: 

Annual Tax Returns and Payment

Your corporate tax return and any tax due must be filed and paid within 9 months of the end of your financial year. For businesses with a 31 December financial year end, the first return and payment for the 2025 tax period is due by 30 September 2026. 

Financial Record-Keeping

Businesses must maintain accurate financial records for a minimum of 7 years. Financial statements should generally be prepared in accordance with International Financial Reporting Standards (IFRS). Companies with revenue below AED 50 million may use unaudited statements; those above must have audited accounts. 

Small Business Relief (SBR)

Qualifying mainland businesses with annual revenue up to AED 3 million may elect for Small Business Relief for tax periods ending on or before 31 December 2026. Under SBR, taxable income is treated as zero, effectively a nil tax position. However, businesses should weigh this against the fact that electing SBR means any losses incurred during that period cannot be carried forward for future use. 

Updating Your Tax Registration

Any changes to your business, including changes of address, ownership, or business activities, must be updated through EmaraTax promptly. Failure to do so attracts an AED 1,000 penalty per late update. 

What Has Changed in 2026

The UAE’s tax framework is continuing to evolve. A few notable 2026 developments that mainland businesses should be aware of: 

• Revised penalty framework: Cabinet Decision No. 129 of 2025 overhauled administrative penalties effective April 2026, including restructured late payment interest at a flat 14% per annum.
• E-invoicing pilot: A voluntary e-invoicing pilot begins in July 2026, with mandatory e-invoicing rolling out for businesses with revenue exceeding AED 50 million from January 2027. Smaller businesses will follow in subsequent phases.
• Tighter FTA enforcement: Under Federal Decree-Law No. 17 of 2025, the FTA now has broader audit powers and tighter deadlines. The authority is actively cross-referencing VAT filings with corporate tax data to identify gaps.
• Domestic Minimum Top-Up Tax: From 2025 onwards, large multinational groups are subject to a minimum effective tax rate of 15% under global Pillar Two standards. 

How Shuraa Tax Can Help

Corporate tax is now a fixed part of doing business in the UAE, and registration is the non-negotiable first step for every mainland entity. The earlier you complete it and the better you understand your ongoing obligations, the fewer complications you will face down the line. 

At Shuraa Tax, we work with businesses of all sizes across the UAE to handle corporate tax registration from start to finish, ensure your documentation is complete and accurate before submission, advise on your financial year structure and filing timeline, identify whether you qualify for Small Business Relief or other applicable reliefs, and provide ongoing compliance support so your business stays in good standing with the FTA year after year. 

If you need guidance on any aspect of the registration process or post-registration compliance, get in touch with Shuraa Tax today. Our FTA-compliant advisory team will handle the complexities so you can focus on running your business.