Tax card number on invoices and contracts

Do we have to show our tax card number on invoices?

The situation

All taxpayers must hold a tax card, and its number must appear on contracts, invoices and correspondence with the Tax Authority.

The law

  • Income Tax Law (tax card): All taxpayers must hold a tax card; number shown on contracts, invoices and tax letters
  • Royal Decree 118/2020 amending the Income Tax Law: Single return within four months of year end from 2020; tax card registration within 60 days of starting business and updates within 30 days

What it means for you

Add the number to invoice templates, letterheads and contract templates. Changes to tax card details must be updated within 30 days. Missing details can delay refunds and tax services.

What to do

  1. Add the tax card number to templates.
  2. Check contracts carry it.
  3. Update details within 30 days of changes.
  4. Keep a copy on file.

We can do this for youAnnual corporate income tax return with audited accounts (15 percent): OMR 650

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