Oman Tax Identification Number (TIN) Validator
Validate the authenticity, format, and checksum of Oman Tax Identification Number (TIN).
About Oman Tax Identification Number (TIN) Validation
The validator checks Oman TIN integrity, verifying that the number has exactly 8 numeric digits and the 8th digit satisfies the weighted Modulo 11 formula.
Executes quickly and securely in the browser to assist integration testing with the Oman tax portal.
Anatomy & Structure of Tax Identification Number (TIN/VAT) — Oman
The Oman Tax ID consists of 8 to 10 decimal digits:
| Position | Field | Length | Meaning & Rule | Example |
|---|---|---|---|---|
| Prefix | Country Code (Optional) | 2 letters | OM in international VAT format | OM |
| 1 to 7/8 | Base Taxpayer Sequence | 7–8 digits | Unique taxpayer identifier assigned by Oman Tax Authority | 1023456 |
| Last | Check Digit | 1 digit | Fiscal checksum digit | 5 |
Official TIN Validation (Tax Authority of Oman)
Compliance rules for Oman TIN:
8 to 10 numeric digits + Optional OM prefix
- 1. Verify length (8 to 10 numeric digits).
- 2. Strip optional OM prefix for numeric validation.