Use a UAE VAT calculator correctly and understand what the arithmetic cannot decide for you.
Adding VAT
For a VAT-exclusive amount, VAT equals net amount multiplied by the selected rate. At 5%, AED 800 produces AED 40 VAT and AED 840 gross. The calculator rounds currency to two decimal places.
Removing included VAT
Do not subtract 5% from a VAT-inclusive price. Divide the gross amount by 1.05 to obtain the net amount, then subtract net from gross. AED 1,050 inclusive therefore contains AED 50 VAT, not AED 52.50.
Know the limitation
The calculator does not know what you sold, where the supply takes place or whether relief applies. Determine standard-rated, zero-rated, exempt or out-of-scope treatment first.
Frequently asked questions
Why is removing VAT different from subtracting 5%?
Because the gross amount already equals 105% of the net amount.
Can I use the calculator for filing?
Use it as an arithmetic aid and reconcile results with your accounting records and applicable guidance.
Last reviewed 22 June 2026. This guide provides general information, not tax, legal or financial advice.
Reviewed for clarity and source accuracy by Toolnovax Editorial Team, business operations and automation specialists.