By Shuja Ahmad | Business Setup Consultant | Updated March 2026
Understanding your tax obligations is one of the most important steps before operating a business in Oman. The Sultanate operates a structured but relatively business-friendly tax system with a standard corporate income tax rate of 15%, a reduced 3% rate for qualifying small businesses, 5% VAT, and a 10% withholding tax on certain payments to non-residents. This guide consolidates all core tax types, registration procedures, compliance requirements, and filing timelines into one reference for business owners and investors operating in Oman in 2026.
Overview of Oman’s Taxation System
Oman introduced its modern corporate income tax framework through the Income Tax Law (Royal Decree 28/2009), which has been updated several times since. VAT was introduced in April 2021 at a standard rate of 5%, bringing Oman in line with the broader GCC harmonisation framework. The primary regulatory body overseeing all tax matters in Oman is the Oman Tax Authority, established under Royal Decree 52/2019. Before this, tax administration fell under the Secretariat General of Taxation within the Ministry of Finance.
All tax registrations, filings, and payments are now processed through the Oman Tax Authority online portal. Oman does not impose personal income tax on individuals, making it an attractive base for expatriate professionals and business owners.
Corporate Income Tax in Oman
Corporate income tax (CIT) in Oman applies to all companies and permanent establishments operating in the country. The taxable period is the calendar year (January to December), and tax returns must be filed in two stages: a provisional return within 3 months of the financial year end, and a final return with audited financial statements within 6 months of the financial year end.
| Category | Tax Rate | Condition |
| Standard companies | 15% | Taxable income above OMR 30,000 |
| Small and medium enterprises | 3% | Capital max OMR 60,000, gross income max OMR 150,000, max 25 employees |
| Free zone companies | 0% (holiday period) | Subject to zone authority conditions |
| Petroleum and mining | 55% | Governed by separate petroleum tax law |
| Global Minimum Tax (MNEs) | 15% top-up | MNEs with global revenue above EUR 750 million, effective from January 2025 |
SME Rate: Eligibility Criteria
The reduced 3% corporate income tax rate is available to qualifying Omani-owned small and medium enterprises. All four of the following conditions must be met:
- Registered capital of OMR 60,000 or less at the start of the tax year
- Gross income not exceeding OMR 150,000 during the tax year.
- Average workforce of 25 employees or fewer throughout the year
- Business activity must not fall within excluded sectors: banking, insurance, financial services, or natural resource extraction
Taxable Income and Deductible Expenses
Taxable income is calculated as gross revenue minus allowable deductions. Deductible expenses include ordinary business costs such as salaries, rent, depreciation, interest on business loans, and professional fees, provided they are incurred wholly for business purposes and supported by documentation. Non-deductible items include fines, penalties, personal expenses, and undocumented payments.
Loss Carry Forward
Companies in Oman can carry forward tax losses for up to five years to offset against future taxable income. This provision is particularly useful for businesses in their early years or those operating in capital-intensive sectors. Loss carry-back is not permitted under Oman’s current tax law.
Capital Gains Tax in Oman
Oman does not have a separate capital gains tax regime. Gains arising from the disposal of business assets are treated as ordinary income and taxed at the standard corporate income tax rate of 15%. Gains on disposal of personal investments by individuals are not taxed.
Global Minimum Tax for Multinational Enterprises
Effective from 1 January 2025 (impacting 2026 tax filings), Oman has introduced a Global Minimum Tax, or Top-up Tax, aligned with the OECD Pillar Two framework. This applies to multinational enterprises with global consolidated revenues exceeding EUR 750 million (approximately OMR 300 million). Where the effective tax rate paid in any jurisdiction falls below 15%, a top-up tax is imposed to bring the effective rate to the minimum threshold. Most Oman-based businesses operating below this revenue threshold are not affected.
What Are the Different Types of Taxes in Oman?
Oman operates a relatively straightforward tax system compared to many other jurisdictions. The table below summarises the main tax types applicable to businesses:
| Tax Type | Rate | Applies To | Authority |
| Corporate Income Tax | 15% | Companies with taxable income above OMR 30,000 | Oman Tax Authority |
| SME Corporate Tax | 3% | Qualifying small businesses | Oman Tax Authority |
| VAT | 5% | Businesses above OMR 38,500 annual revenue | Oman Tax Authority |
| Withholding Tax | 10% | Payments to non-resident entities | Oman Tax Authority |
| Excise Tax | 50% / 100% | Tobacco, energy drinks, pork products | Oman Tax Authority |
| Customs Duties | 5% (standard) | Imported goods (GCC common tariff) | Royal Oman Police / Customs |
There is no personal income tax, no inheritance tax, and no wealth tax in Oman. This remains a significant advantage for foreign investors and high-net-worth individuals. Note also that dividends received by an Omani company from another Omani company are generally exempt from corporate income tax. Plans for a high-earner personal income tax have been delayed until at least 2028.
VAT in Oman: Registration, Filing, and Compliance
Oman introduced a 5% Value Added Tax on 16 April 2021 under the VAT Law (Royal Decree 121/2020). It applies to most goods and services supplied within Oman unless specifically zero-rated or exempt.
VAT Registration Threshold
- Mandatory registration: businesses with annual taxable supplies exceeding OMR 38,500
- Voluntary registration: businesses with annual taxable supplies between OMR 19,250 and OMR 38,500
- Non-resident businesses supplying taxable goods or services in Oman must register, regardless of the threshold
VAT Filing Frequency
- Quarterly returns: for most registered businesses
- Monthly returns: for businesses with annual taxable supplies exceeding OMR 1,000,000
- Returns and payments are due within 30 days of the end of the tax period
Zero-Rated and Exempt Supplies
Zero-rated supplies (VAT charged at 0%) include exports of goods, international transport services, certain food items, medicines, and medical equipment. Exempt supplies (no VAT charged and no input VAT recovery) include financial services, residential property rental, and bare land transactions. Input VAT on costs related to exempt supplies cannot be recovered.
Withholding Tax in Oman
Oman imposes a 10% withholding tax on certain payments made to non-resident entities without a permanent establishment in Oman. Withholding tax applies to the following payment types:
- Royalties paid for the use of intellectual property or natural resources
- Fees for technical services, management services, and consultancy
- Dividends paid to non-resident shareholders (note: dividends paid to Omani residents and GCC nationals are exempt)
- Interest payments on loans from non-resident lenders
- Commissions and brokerage fees paid to non-residents
Withholding tax must be deducted by the paying entity and remitted to the Oman Tax Authority within 14 days of the payment date. Failure to withhold makes the payer liable for the full tax amount plus penalties.
Impact of Double Taxation Agreements on WHT
Oman has signed Double Taxation Agreements (DTAs) with over 35 countries. Where a DTA is in force, withholding tax rates may be reduced or eliminated. Businesses should verify whether a DTA applies before making cross-border payments. The full list of Oman’s active DTAs is available on the Oman Tax Authority website.
Tax Registration and Filing Process in Oman
Corporate Tax Registration
- Register through the Oman Tax Authority portal within 60 days of commencing business.
- Required documents: commercial registration certificate, memorandum of association, shareholder details, and bank account information
- A Tax Identification Number (TIN) is issued upon successful registration.
- Provisional tax return due within 3 months of the financial year end, along with an estimated tax payment
- Final annual return with audited financial statements due within 6 months of the financial year end
VAT Registration
- Apply through the Oman Tax Authority online portal.
- Required documents: commercial registration, trade license, financial records showing turnover, and authorised signatory details
- VAT registration is typically processed within 5 to 10 working days
- A VAT certificate is issued and must be displayed at the business premises.
For detailed guidance on company registration requirements in Oman before reaching the tax registration stage, refer to our
For detailed guidance on company registration requirements in Oman before reaching the tax registration stage, refer to our Oman company registration.
Key Tax Considerations for Businesses in Oman
Transfer Pricing
Oman’s Income Tax Law requires that transactions between related parties be conducted at arm’s length. The Oman Tax Authority can adjust taxable income where related-party transactions are not priced at market rates. Transfer pricing documentation is increasingly scrutinised, particularly for companies with cross-border group structures.
Permanent Establishment
A non-resident company that maintains a fixed place of business in Oman, or operates through a dependent agent, is considered to have a permanent establishment (PE) and is subject to Omani corporate income tax on profits attributable to that PE. Construction and project activities lasting more than 90 days typically trigger PE status.
Economic Substance Requirements
Oman has introduced economic substance regulations requiring companies in certain sectors to demonstrate genuine business activity within the country. Affected sectors include banking, insurance, fund management, finance and leasing, headquarters, shipping, and intellectual property holding. Companies must file economic substance reports annually.
Free Zone Taxation in Oman
Companies registered in Oman’s free zones, including Sohar Free Zone, Salalah Free Zone, Duqm SEZ, and Al Mazunah, benefit from corporate income tax holidays ranging from 5 to 30 years, depending on the zone and activity. During the tax holiday period, no corporate income tax is payable on qualifying profits. In addition to free zone benefits, sector-specific tax exemptions for 5 years (extendable) are available to qualifying mainland projects in manufacturing, mining, agriculture, fisheries, and tourism.
- Tax holiday periods vary by zone: Sohar and Salalah offer up to 10 years, Duqm SEZ offers up to 30 years for qualifying industrial projects.
- VAT obligations still apply to free zone companies if the revenue threshold is met
- Withholding tax still applies to payments made to non-resident entities.
- After the tax holiday expires, standard corporate income tax rates apply.
- Companies must remain in compliance with the zone authority regulations to retain tax holiday status.
For a full breakdown of free zone options and registration costs, see our free zone company formation guide.
Tax Penalties and Non-Compliance Risks in Oman
- Late filing of corporate tax return: fine of up to OMR 2,000 plus 1% per month on delayed tax payments
- Late payment of tax: 1% per month on the unpaid amount
- Failure to register for VAT when required: fine of OMR 5,000
- Late VAT filing: fine between OMR 500 and OMR 5,000
- Understating taxable income: penalty of up to 25% of the understated tax amount
- Failure to withhold tax on payments to non-residents: the paying entity becomes liable for the full tax plus penalties
- Failure to maintain adequate records: fines and potential audit escalation
The Oman Tax Authority conducts desk audits and field audits. Audit triggers include significant discrepancies between VAT returns and corporate tax filings, unusually high deductions, and related-party transactions that appear inconsistent with market rates.
Double Taxation Agreements in Oman
Oman has an active network of Double Taxation Agreements with more than 35 countries, including the United Kingdom, France, India, China, Singapore, the Netherlands, and South Korea. DTAs typically provide relief by reducing or eliminating withholding tax on cross-border income flows and preventing the same income from being taxed in both countries.
- To claim DTA benefits, the recipient must provide a tax residency certificate from their home country
- The certificate must be submitted to the paying entity before the payment is made
- DTA benefits do not apply automatically and must be actively claimed
- The Oman Tax Authority can challenge DTA claims where the principal purpose of the arrangement is tax avoidance
The Role of Tax Advisors in Oman
Tax compliance in Oman involves multiple filings across corporate tax, VAT, and withholding tax, each with its own deadlines, documentation requirements, and penalty structures. For most businesses, particularly those with cross-border transactions, related-party dealings, or free zone structures, professional tax guidance reduces both risk and administrative burden.
- Ensuring correct registration across all applicable tax categories
- Preparing and filing corporate tax returns accurately and on time
- VAT return preparation, input tax recovery, and audit support
- Transfer pricing documentation and related-party transaction review
- Withholding tax compliance on cross-border payments
- DTA analysis and residency certificate coordination
- Responding to Oman Tax Authority queries and audit notices
Tax Compliance Checklist for Businesses in Oman
- Obtain a Tax Identification Number (TIN) within 60 days of business commencement
- Assess VAT registration obligation: mandatory above OMR 38,500 annual taxable revenue
- Set up an accounting system capable of producing VAT-compliant invoices
- File a provisional corporate tax return within 3 months of the financial year end with an estimated tax payment
- File the final corporate tax return with audited financials within 6 months of the financial year end
- File VAT returns quarterly or monthly, depending on the revenue threshold
- Deduct and remit withholding tax on payments to non-residents within 14 days
- Maintain all financial records and supporting documents for a minimum of 10 years
- Review transfer pricing documentation if related-party transactions exist
- File economic substance reports if operating in a regulated sector
- Renew tax registration details if the company structure or activity changes
Conclusion
Oman’s tax system is structured and increasingly well-enforced, but it remains one of the more business-friendly frameworks in the GCC. With no personal income tax, a 15% corporate rate, a 3% SME concession, and generous free zone tax holidays, the system is designed to attract investment. The complexity lies in compliance across multiple tax types, each with its own registration thresholds, filing deadlines, and penalty structures.
Business owners planning to set up in Oman should ensure tax registration is addressed at the same time as company formation. For related procedural guidance, see our mainland company formation guide and our Oman company registration overview. The team at MakeMyCompany supports businesses with corporate tax registration in Oman, VAT registration, withholding tax compliance, and coordination with registered tax advisors in Oman.
About the Author
Shuja Ahmad is a Business Setup Consultant at MakeMyCompany, based in Muttrah, Muscat. He advises investors and business owners on corporate tax in Oman, VAT registration, tax compliance in Oman, and the full range of business tax obligations under Oman’s taxation system. Shuja has guided companies through corporate income tax registration, VAT threshold assessment, withholding tax compliance, and tax filing requirements in Oman across sectors, including trading, manufacturing, professional services, and free zone operations. He works with businesses navigating small-business tax in Oman, corporate tax exemption structures, and double-taxation agreements when structuring cross-border investments.
For consultations, reach the MakeMyCompany team at omanbusinesssetup.com or email info@omanbusinesssetup.com.
