Corporate Income Tax in Oman
Reviewed by the Commoner Law Editorial Team. Sourced from Omani royal decrees, ministerial decisions, and the Basic Statute of the State. Written in plain language for general understanding — this is educational content, not legal advice. Our editorial standards
What is this right?
Oman levies a corporate income tax on business profits:
- Tax rate: A flat rate of 15% on taxable income for all companies and establishments.
- Who pays: All companies (Omani and foreign-owned), partnerships, and sole proprietorships operating in Oman.
- Taxable income: Net profit after allowable deductions (business expenses, depreciation, bad debts).
- Small business exemption: Companies with annual income below OMR 30,000 may benefit from a simplified tax regime and reduced compliance requirements.
- Filing deadline: Tax returns must be filed with the Tax Authority of Oman within 4 months after the end of the accounting year.
When does it apply?
- You own or operate a business in Oman — the 15% corporate tax applies to your profits.
- You are a branch of a foreign company doing business in Oman.
- Your accounting year has ended and you need to file a return with the Tax Authority.
What to Do If Your Business in Oman Receives an Unexpected Corporate Tax Demand
- Register with the Tax Authority of Oman and obtain a tax card.
- Keep proper accounting records — you must maintain books for at least 10 years.
- File your return within 4 months of your year-end and pay any tax due.
- Hire a qualified accountant or tax adviser to ensure accurate filings.
What should you NOT do?
- Do not miss the filing deadline — late filing incurs penalties of OMR 100 per month of delay.
- Do not claim personal expenses as business deductions — the Tax Authority audits these carefully.
- Do not fail to register — operating without a tax card is an offence.
Common Questions
When does it apply — corporate income tax?
You own or operate a business in Oman — the 15% corporate tax applies to your profits.You are a branch of a foreign company doing business in Oman.Your accounting year has ended and you need to file a return with the Tax Authority.
What should I do if the Tax Authority of Oman issues my business a corporate tax demand I was not expecting?
Register with the Tax Authority of Oman and obtain a tax card.Keep proper accounting records — you must maintain books for at least 10 years.File your return within 4 months of your year-end and pay any tax due.Hire a qualified accountant or tax adviser to ensure accurate filings.
What should you NOT do — corporate income tax?
Do not miss the filing deadline — late filing incurs penalties of OMR 100 per month of delay.Do not claim personal expenses as business deductions — the Tax Authority audits these carefully.Do not fail to register — operating without a tax card is an offence.