E-invoicing start dates
When does e-invoicing start in Oman?
The situation
Decision 189/2026 sets 1 April 2027 for businesses with annual supplies above OMR 5 million and 1 October 2027 for all others.
The law
- Tax Authority Decision No. 189/2026 amending the VAT Executive Regulation (e-invoicing): Electronic tax invoices through accredited providers: from 1 April 2027 for supplies above OMR 5 million a year, 1 October 2027 for all others
What it means for you
A pilot with about 100 companies started in 2026. A company with OMR 3 million of supplies goes live on 1 October 2027. Plan provider selection about six months ahead.
What to do
- Check last year's supplies.
- Note your wave date.
- Select a provider.
- Plan testing.
We can do this for youFawtara e-invoicing readiness and onboarding: OMR 600