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Useful calculators and generators that run in your browser. Nothing you type is stored.
VAT and GST calculator
Add or remove tax · Free VAT and GST calculator. Add or remove VAT at UAE 5%, Saudi 15%, Bahrain 10%, UK 20%, Singapore 9%, India GST or any custom rate. Instant, no sign-up.
OpenTax invoice generator
Print or save as PDF · Create a tax invoice in your browser with VAT per line, then print it or save it as PDF. Free, no sign-up, nothing stored on our servers.
OpenE-invoicing deadline checker
UAE and Saudi dates · Find your e-invoicing deadline in seconds: UAE ASP appointment and go-live dates by revenue, and Saudi ZATCA wave 25 thresholds. Verified October 2026.
OpenUAE gratuity calculator
End-of-service benefit · Estimate UAE end-of-service gratuity for private-sector employees: 21 days’ basic pay per year for the first five years, 30 days after, capped at two years’ pay.
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