VAT and Corporate Tax compliance mistakes usually aren't about dishonesty — they're about genuinely misunderstanding how the rules apply. Here are the ones that come up most often.
The Mistakes
- Assuming registration is optional below a vaguely remembered threshold
VAT and Corporate Tax each have specific, currently published thresholds — check the exact figure that applies to your business rather than relying on a number you half-remember. Check it with the Tax Assistant. - Applying the 9% Corporate Tax rate to total profit instead of the taxable portion
Corporate Tax only applies to profit above the AED 375,000 tax-free threshold — applying 9% to your entire profit overstates your own tax bill. Check it with the UAE Corporate Tax Calculator. - Misclassifying VAT-deductible costs
Not every business expense qualifies for VAT reclaim — misclassifying costs can lead to either underclaiming (leaving money on the table) or overclaiming (an FTA compliance risk). Check it with the UAE VAT Calculator. - Issuing invoices missing mandatory VAT fields
A compliant UAE tax invoice needs specific fields — TRN, VAT breakdown, sequential invoice number — that generic invoice templates often miss. Check it with the UAE Invoice Generator. - Assuming free zone status automatically means 0% Corporate Tax
Free zone companies must meet specific qualifying income and de minimis conditions to maintain their 0% rate — it isn't automatic simply by being registered in a free zone. Check it with the Tax Assistant.
The Common Thread
Almost every mistake on this list comes down to the same root cause: relying on a rule of thumb, an outdated assumption, or someone else's number instead of checking your own specific figures. None of the tools linked above require a sign-up, and each takes under a minute — there's rarely a good reason to skip the check.
Frequently Asked Questions
What happens if I register for VAT late?
Late registration can result in FTA penalties, so it's worth checking your turnover against the current threshold regularly as your business grows rather than waiting for a reminder.
Is the AED 375,000 Corporate Tax threshold the same for every business?
It's a general tax-free threshold on taxable profit, though Small Business Relief and free zone qualifying income rules can affect how much of your profit is actually taxed.
Can I reclaim VAT on all my business expenses?
No — some categories of expense are specifically excluded from VAT reclaim under FTA rules, so it's worth checking which of your costs actually qualify.
Does an invoice without a TRN number still count as compliant?
No — a valid Tax Registration Number is one of the mandatory fields on a compliant UAE tax invoice for a VAT-registered business.
How do I know if my free zone company qualifies for 0% Corporate Tax?
You'll need to check your income against the qualifying income definition and de minimis test for your specific free zone and activity — the Tax Assistant tool is a good starting point.