Mandatory registration: the AED 375,000 rule
Under Federal Decree-Law No. 8 of 2017 (as amended, most recently by Decree-Law No. 16 of 2025 effective 1 January 2026), a UAE-resident business must register for VAT in two situations: when the total value of taxable supplies and imports over the previous 12 months exceeded AED 375,000, or when it is anticipated that the total will exceed AED 375,000 in the next 30 days.
Two details businesses commonly miss. First, the 30-day forward test: signing a single contract that will push your billings past the threshold next month triggers the obligation now β you do not wait for the revenue to arrive. Second, 'taxable supplies' includes zero-rated supplies. If your entire revenue is zero-rated exports or qualifying healthcare, it still counts toward the AED 375,000. Businesses making only zero-rated supplies can apply to the FTA for a registration exception, but the default assumption is that the threshold applies.
Once the threshold is crossed, you have 30 days to notify the FTA and submit the registration application on EmaraTax. The effective registration date is backdated to when the obligation arose β so a late application doesn't just risk the penalty, it also leaves you issuing non-compliant invoices in the gap.
Voluntary registration: when AED 187,500 is worth it
The voluntary threshold is exactly half the mandatory one: AED 187,500 in taxable supplies and imports β or in taxable expenses. The expenses leg is the part most guides skip: a pre-revenue startup that has spent AED 187,500 on rent, equipment, and services can voluntarily register purely on costs, before it has issued a single invoice.
Why register voluntarily? Input VAT recovery. A business spending heavily on fit-out, software, or professional fees before launch can reclaim the 5% VAT on those costs once registered β real cash back from the FTA instead of sunk cost. It also signals credibility to enterprise customers who prefer dealing with VAT-registered suppliers, and it gets your tax infrastructure (TRN, invoice format, return cadence) in place before the mandatory rush.
The trade-off is real, too: voluntary registration means quarterly (or monthly) VAT returns, 5% added to your invoices where customers can't recover it, and full record-keeping obligations. Register when the recovery or commercial benefit outweighs the admin β not just because you crossed a line.
Non-resident businesses: there is no threshold
Foreign companies making taxable supplies in the UAE have no minimum threshold at all. If your business has no place of residence in the UAE and you make a taxable supply here β a single invoice, of any value β you are required to register for UAE VAT, provided no other person is obligated to account for the tax on that supply (for example, via the reverse charge mechanism when selling to a VAT-registered UAE business).
This catches overseas SaaS providers, foreign consultancies, and e-commerce sellers who assume the AED 375,000 cushion applies to them. It doesn't. The test for non-residents is whether the UAE customer self-accounts via reverse charge (common for B2B) β if they do, you may not need to register; if they don't (B2C sales, or B2B to unregistered buyers), the obligation is yours from dirham one.
How to register on EmaraTax
Registration runs entirely through EmaraTax, the FTA's digital tax platform. The flow: create an EmaraTax account β start a VAT registration application β upload trade licence, owner/authorised-signatory documents, bank details, and financial evidence of your turnover (invoices, contracts, or audited figures) β submit for FTA review.
Expect the review to take up to 20 business days; well-documented applications move faster. On approval you receive your Tax Registration Number (TRN) β the 15-digit identifier that goes on every tax invoice you issue from that point forward. You can verify any UAE TRN instantly with our free TRN validator.
One timing note: apply before you need the TRN, not after. Customers will ask for it on invoices, marketplaces require it for seller onboarding, and once the e-invoicing mandate applies to you, your TRN is a mandatory field inside every PINT-AE invoice your system generates.
After registration: TRN, returns, and the e-invoicing link
Your obligations don't end at the TRN. Registered businesses must issue tax invoices in the prescribed format, file VAT returns by the 28th day of the month following each tax period (quarterly for most SMEs), and keep records for at least 5 years β longer for real estate.
The connection most businesses haven't made yet: VAT registration is also the gateway into the e-invoicing mandate. The FTA's Electronic Invoicing System applies to persons conducting business in the UAE β in practice, the VAT-registered population. From 2027, every invoice you issue must additionally be generated in PINT-AE XML, digitally signed, and transmitted through an Accredited Service Provider. Your TRN is a mandatory data field in every one of those invoices.
The clean way to think about it: VAT registration gets you a TRN; e-invoicing turns every invoice carrying that TRN into structured data the FTA receives in near-real-time. If you're registering now, build both into the same project β the accounting-system choices you make for VAT (which ERP, how invoices are issued) are exactly the choices your ASP will need to connect to. See the phase deadlines on our UAE e-invoicing timeline.
Deadlines and penalties
The 30-day clock is the one to remember: once your taxable supplies cross AED 375,000 β or you sign the contract that will push you over β you have 30 days to submit the registration application. Miss it and the administrative penalty for late registration is AED 10,000, applied on top of any VAT that should have been charged and collected in the interim.
The downstream exposure is bigger than the headline fine. Late registration means a period where you made taxable supplies without charging VAT β the FTA can assess that tax retroactively, and you'll be paying it out of your own margin because you can't invoice it to customers after the fact. Add late-payment and non-filing penalties and a delayed registration routinely costs more than a year of compliance would have.
On the way out: if your taxable supplies fall below AED 187,500 over a 12-month period, you may apply to deregister β but you're required to when supplies drop below the mandatory threshold and you don't expect to recover. Deregistration also runs through EmaraTax and the FTA takes up to 20 working days to review.