To register for corporate tax in the UAE, you complete an application on the Federal Tax Authority's (FTA) EmaraTax portal: log in, add your taxable person, fill in your entity and licence details, upload your documents, and submit. The FTA reviews it and issues your Corporate Tax Registration Number, usually within about 20 business days. Registration is mandatory for almost every business — even if you'll pay 0% tax — and missing your deadline triggers a AED 10,000 penalty.
This guide walks through the whole process step by step, the documents you'll need, how long it takes, and the mistakes that cause delays.
Before you start: who must register, and when
Almost every UAE business must register: mainland companies, free zone entities (including Qualifying Free Zone Persons taxed at 0%), and natural persons whose business turnover exceeds AED 1 million in a calendar year. Registration is required even if you expect no tax.
Your deadline depends on your entity — new companies register within 3 months of incorporation, and natural persons by 31 March of the year after they cross AED 1 million. For the full breakdown, see our guide to the corporate tax registration deadline.
Documents you need to register
Have these ready before you log in — it makes the process much faster:
- Valid trade licence
- Emirates ID and passport copies of the owners and the authorised signatory
- Memorandum of Association (MOA) or equivalent, where applicable
- Proof of authorisation for the signatory (a Power of Attorney if the signatory isn't named on the MOA)
- Business contact details — registered address, email, phone
- Business activity details and ownership structure
How to register for corporate tax on EmaraTax, step by step
- Log in to EmaraTax. Go to the FTA's EmaraTax portal and log in with UAE Pass (fastest — it pulls your details automatically) or your registered email account. If you already registered for VAT, reuse that account rather than creating a duplicate.
- Open or add your taxable person. Your dashboard shows the taxable persons under your profile. Select the relevant one, or add a new taxable person if it isn't listed.
- Start the corporate tax registration. From the taxable person, choose Corporate Tax and begin a new registration application.
- Enter your entity details. Provide your entity type (natural or juridical person), legal structure, trade licence details, business activities, and ownership information.
- Add the authorised signatory. Enter the person legally authorised to act for the business — this must match your licence and MOA (see the tip below).
- Upload your documents. Attach the trade licence, Emirates ID and passport copies, MOA, proof of authorisation, and contact details.
- Review and submit. Check every field, submit, and track the application in your dashboard. The FTA reviews it and issues your Corporate Tax Registration Number, typically within about 20 business days.
Expert tip: the authorised signatory trap
The single most common cause of a rejected or delayed application is a mismatch on the authorised signatory. The person who applies on EmaraTax must be the one with legal authority on your trade licence and MOA. If your office manager submits the application but the MOA names a different authorised person, the FTA will ask for a Power of Attorney — and your registration stalls until you provide it. Sort the signatory out before you submit, not after.
After you register
Getting your Corporate Tax Registration Number is the first step, not the last:
- File your annual return. Every registered business must file a corporate tax return within 9 months of the end of its tax period and pay any tax due by the same date. Our Corporate Tax Filing service handles this.
- Keep your records. You must retain accounting records and supporting documents for at least 7 years.
- Know your rate. Corporate tax is 0% on taxable income up to AED 375,000 and 9% above. Businesses under AED 3 million revenue may qualify for Small Business Relief through 31 December 2026.
What if you've already missed your deadline?
If you registered late, you may have been charged the AED 10,000 penalty — but it can often be cancelled. The FTA's waiver removes the fine (or refunds it) if you file your first return within 7 months of your first tax period's end. See how the corporate tax penalty waiver works.
Should you register yourself or use an agent?
You can absolutely register yourself on EmaraTax — for a simple, single-owner company with clean documents, it's manageable. Where people get stuck is signatory mismatches, free zone nuances, choosing the correct entity type, and tax-period questions, any of which can cause rejections, delays, or a missed deadline. If your structure is anything but straightforward, or you simply don't want to risk the AED 10,000 penalty, handing it to an FTA-experienced team is the safer route. Our Corporate Tax Registration service does the whole application for you on a fixed fee.
Common mistakes that cause delays
- Creating a duplicate EmaraTax account instead of reusing your VAT login.
- An authorised signatory who doesn't match the MOA, with no Power of Attorney attached.
- Selecting the wrong entity type or tax period.
- Assuming a 0% rate or free zone status means you don't need to register. You do.
- Leaving it until the deadline — registration approval takes time, and late registration means a AED 10,000 fine.
Frequently asked questions
How do I register for corporate tax in the UAE? Through the FTA's EmaraTax portal: log in, add your taxable person, complete the corporate tax registration application with your entity and licence details, upload your documents, and submit. The FTA issues your Corporate Tax Registration Number, usually within about 20 business days.
What documents do I need to register for corporate tax? Your trade licence, Emirates ID and passport of the owners and authorised signatory, Memorandum of Association where applicable, proof of signatory authority, and your business contact and activity details.
How long does corporate tax registration take? Typically about 20 business days once a complete application is submitted, though processing times can vary.
Can I register for corporate tax myself? Yes, via EmaraTax. It's manageable for simple structures, but signatory mismatches and entity-type errors commonly cause delays, which is why many businesses use an agent.
Is corporate tax registration free? The FTA does not charge a fee for the registration itself. Costs only arise if you engage a professional to handle it for you.
Do I need to register if my business makes no profit? Yes. Registration is mandatory for all taxable persons regardless of profit, including businesses taxed at 0%.
What is the deadline to register for corporate tax? New companies must register within 3 months of incorporation; natural persons by 31 March of the year after turnover exceeds AED 1 million. Missing it triggers a AED 10,000 penalty.
Final thoughts
Registering for corporate tax on EmaraTax is straightforward when your documents are in order and your authorised signatory is correct — get those right and most applications go through cleanly within about 20 business days. The two things worth being careful about are your deadline and your signatory, because both can cost you time or a AED 10,000 penalty.
At TaxBox.ae, we handle the full registration for UAE SMEs and startups — documents prepared, application filed on EmaraTax, and your registration number delivered, on a fixed fee. Book a free consultation and we'll confirm your deadline and take care of the rest.