Corporate Tax in Oman: Guide for Foreign Businesses 

Oman is widely recognized for having one of the most transparent and predictable corporate tax regimes in the Middle East. The Sultanate avoids tiered brackets and nationality-based adjustments that are common in other regional markets, applying a flat 15% rate for domestic and foreign companies.

In this guide, we break down how corporate tax works in Oman and what new companies should plan for during setup. Mainly, we’ll cover your core tax obligations and how certain regulations may shape your overall tax position.

Understanding the Corporate Tax System in Oman

Oman’s corporate tax system is governed by the Income Tax Law (Royal Decree No. 28/2009) and administered by the Oman Tax Authority (OTA). For foreign companies, the system is designed to be lean and non-discriminatory, but it requires a slight shift in perspective compared to other GCC markets. Among the key features are:

• One main corporate tax:  Oman does not use a “progressive” or “tiered” system for foreign-owned LLCs. Regardless of your profit, the rate remains a flat 15%. This removes the complexity of “tax bracket management” but means there is no initial tax-free threshold.
• The “Permanent Establishment” (PE) Rule: Tax liability is tied to your physical and economic presence. Providing services in Oman for more than 90 days within any 12-month period can trigger a PE, making your entity liable for local tax regardless of where the contract was signed.
• Substance-Linked Incentives (RD 38/2025): Tax holidays in SEZs and Free Zones (e.g., Duqm, Sohar) are highly conditional. To maintain a 0% rate, you must prove “Economic Substance” by meeting Omanization quotas (10%–25%) and employing at least one Omani national within your first year.
• Strategic Sector Alignment: While most firms enjoy the 15% rate, specific industries such as Oil & Gas operate under separate concession agreements. If your project aligns with Oman Vision 2040 (energy, logistics, or manufacturing), you may access unique tax frameworks tailored to the capital-heavy nature of your industry.
• Domestic Minimum Top-Up Tax (DMTT): Effective January 2025, Oman implemented a 15% Global Minimum Tax. If your company is part of a Multinational Enterprise (MNE) with global revenues exceeding €750 million, you will be subject to a 15% tax in Oman even if you are located in a tax-free zone.
• OECD-Aligned Reporting: Oman enforces strict Transfer Pricing rules. Inter-company charges between your Omani branch and foreign HQ must be “Arm’s Length” (market rate) and documented, or the OTA will disallow them as deductible expenses.

Corporate Income Tax (CIT) Rates in Oman

Once your foreign-owned LLC begins generating income, your profits are taxed at a standard 15% CIT rate. Taxable income in Oman is defined broadly as any profit or economic gain arising from your local operations, including:

• Revenue from services, contracting, trading, or consulting
• Income from royalties, interest, or intellectual property
• Gains from selling or disposing of business assets
• Any other increase in net worth linked to business activity

While the 15% rate is the baseline, 2025 saw a significant “unification” of zone-based incentives. Below is the updated overview of how these rates apply across different entities in Oman:

Entity / Regime	Applicable Tax Rate	Key Conditions / Notes
Standard LLC / Branch Office	15%	Applies to all “Mainland” profits; no initial tax-free threshold exists.
Qualifying SME’s (Riyada-certified)	3%	For 100% Omani-owned firms with <OMR 1M annual turnover.
Special Economic & Free Zones (e.g., Duqm, Sohar, Salalah, Al Mazunah)	0%	RD 38/2025: up to 10-year holiday, renewable up to 30 years. Requires meeting Substance and Omanization (10%–25%) benchmarks.
Sector-Based Projects (inside or outside zones)	0%–15%	Discretionary tax holiday or reductions for manufacturing, fisheries, agritech, or high value sectors. Requires formal MOF approval and specific start-date windows.
Oil & Gas Operators (Concession-Based)	base 55%	Governed by specific Exploration & Production Sharing Agreements (EPSA), rather than the standard CIT regime.
Large Multinationals	Minimum 15%	Under OECD Pillar Two, if group revenue >€750M, a Top-Up Tax applies (DMTT); cancels out 0% zone benefits to meet the global floor.

Deductible vs. Non-Deductible Expenses

In Oman, your Accounting Profit is different from your Taxable Profit. The Oman Tax Authority (OTA) follows a strict logic: if an expense isn’t essential to earning Omani revenue, it usually isn’t deductible.

Category	Deductible Expenses	Non-Deductible Expenses
Staff & HR	Salaries and mandatory social security (PASI) for Omani nationals; job-related training.	Personal expenses, unapproved allowances, or non-business travel.
Operations	Office rent, utilities, and insurance premiums for local premises.	Entertainment costs without receipts; costs unrelated to the licensed activity.
Professional Services	Legal, audit, accounting, engineering, consulting services linked to Oman projects	Overseas “group fees” or allocations with no evidence of benefit
Finance & Loans	Interest on bank loans within the 2:1 debt-to-equity limit.	Interest on loans exceeding the 2:1 ratio; shareholder loans disguised as operating costs
Assets & Equipment	Depreciation using OTA-approved straight-line rates (e.g., 33.33% for software/IP), repairs that keep assets usable	General provisions, unrealized exchange losses, or asset revaluations.
Cross-Border Fees	Royalties, technical fees, management services  that meet Arm’s Length pricing standards.	Inflated or unsupported charges; fees that don’t meet arm’s-length pricing

• Specific Deduction Limits to Note:
  • Donations & Charitable Contributions: Deductible up to 5% of total taxable income, provided payments are made to registered Omani charities, government bodies, or the newly approved “Endowment Institutions” (as per 2025 updates).
  • Head Office Overhead (for Branches): Overhead allocations from an overseas HQ are generally capped at 3% of the Omani branch’s revenue, though this is subject to strict audit.
  • Sponsorships: Marketing and sponsorship costs must be directly linked to Omani revenue generation to be fully deductible.

Emerhub experts can provide you with a clear breakdown of your CIT exposure and obligations related to your business. We can also flag any risk areas early, before assessments or audits arise.

Value-Added Tax (VAT) Compliance in Oman

VAT in Oman is a 5% consumption tax on most goods and services. If you run an LLC or branch in Oman, VAT affects your sales, invoicing, and your ability to recover tax paid on business expenses. The rate is relatively low, but compliance is tightly enforced by the Oman Tax Authority (OTA).

The threshold for registration depends on whether your LLC is classified as a Resident or Non-Resident for VAT purposes:

• Resident LLCs: For companies with a physical office and local staff, registration is mandatory once taxable turnover reaches OMR 38,500 (~USD 100,000) in a 12-month period. Voluntary registration is available at OMR 19,250.
• Non-Resident LLCs: If your entity has a legal registration but lacks a physical management presence or employees in Oman, the registration threshold is zero. You must register before making your first taxable supply and appoint a resident Tax Representative.

VAT works on an input-output system where you charge 5% on sales and recover the 5% paid on expenses. However, VAT-exempt activities (like residential leases or specific financial services) block your ability to recover input tax, effectively increasing your operating costs. 

Conversely, Zero-rated activities (like exports or supplies to Special Economic Zones under RD 38/2025) allow you to claim back 100% of your input VAT while keeping your charges tax-free for customers.

Withholding Tax (WHT) and Other Indirect Taxes in Oman

Oman applies a flat 10% Withholding Tax when an Omani company pays specific fees to a foreign supplier that does not have a Permanent Establishment (PE) in the Sultanate. Instead of the foreign vendor filing a return, you deduct the 10% and remit it to the OTA within 14 days of the end of the month in which the payment was made.

While physical imports are excluded from WHT (handled instead via a 5% Customs Duty), the service-based list for WHT is specific:

• Royalties, IP payments, and Software/SaaS usage fees.
• Management, technical, or consultancy fees paid to an overseas parent or affiliate.
• Research and development services performed from abroad. 

Crucially, as of late 2025, WHT on dividends and interest remains suspended by Royal Directive to encourage capital flow. However, many investors utilize Oman’s 35+ Double Taxation Agreements (DTAs) to secure long-term protection. 

Treaties with popular holding jurisdictions like Singapore, the UAE, Mauritius, and the UK can significantly drop the standard 10% rate, protecting your margins when paying overseas partners or group companies.

Emerhub can verify your full tax burdens. This includes any WHT exposure, structuring cross-border payments correctly, and tapping into active DTAs to reduce your tax exposure.

Corporate Tax Exemptions in Qatar

Oman’s tax system includes strategic exemptions designed to attract high-value industries and long-term capital. These typically fall into three categories:

1. Exemptions by Income Type

To prevent triple taxation and encourage liquidity in the local markets, the OTA excludes specific gains from your taxable base. This is particularly relevant for holding companies and treasury-led operations:

• Dividends & Local Equities: Dividends received by an Omani company from another Omani entity are 100% exempt. This allows group structures to move profits between subsidiaries without incurring a second layer of tax.
• Muscat Stock Exchange (MSX) Gains: Any profits or capital gains derived from the disposal of securities listed on the MSX are tax-free. This is a cornerstone incentive for institutional investors and those planning an eventual local exit.
• Government Bonds & Sukuk: Following the 2025 reforms, income from qualifying government-backed instruments. Interests and gains from disposal are also exempt. This provides a tax-efficient avenue for firms to park excess capital in stable, national debt instruments. 
• Salaries and Wages: Oman doesn’t currently impose personal income tax on employees. From a corporate perspective, salaries, bonuses, and end-of-service gratuities are fully deductible business expenses. Note that while a 5% Personal Income Tax (PIT) was decreed in 2025, it only targets high-earners (>OMR 42,000/year) and will not be implemented until January 1, 2028. 

2. Special Economic Zone vs Free Zone Exemptions 

Under the unified Royal Decree 38/2025, the government harmonized incentives for special investment “Zones,” but the choice of location still dictates your operational requirements:

• Special Economic Zones (e.g., Duqm/SEZAD): These are broader, integrated industrial hubs. They offer a 30-year tax holiday (10 years initial, renewable for two 10-year terms). They are ideal for heavy industry, fisheries, and energy. Under the 2025 law, SEZs can actually house free zones within them, offering more complex land-use rights. 
• Free Zones (e.g., Sohar, Salalah, Al Mazunah): These are typically narrower enclaves focused on logistics and light manufacturing. They offer a 10-year holiday, which is strictly renewable based on the company’s “Economic Substance.”

To maintain 0% tax status, you must prove you are not a “shell.” This means maintaining Omanization rates (10–25%) and, as of 2025, having at least one Omani national in a management-level position. Failure to meet these specific staff and asset benchmarks will lead to the retroactive application of the 15% standard tax.

2. Strategic Sector Exemptions 

For businesses operating outside the “Zones,” Oman grants 5-year non-renewable tax holidays for specific “Economic Diversification” sectors. These are not automatic and require a formal application to the Ministry of Finance:

• Industrial and Manufacturing: Specifically for projects that add “In-Country Value” (ICV) by utilizing local raw materials or creating tech-driven manufacturing lines.
• Healthcare and Education: Private universities, technical colleges, and specialized medical centers are exempt from tax for their first 5 years to encourage social infrastructure development.
• Tourism and Hospitality: This applies primarily to hotels and integrated tourism complexes located outside the Muscat Governorate, aimed at spreading economic growth to regional areas.
• Agriculture and Fisheries: Large-scale commercial projects that contribute to food security are eligible for holidays, provided they meet annual “active operation” conditions.

How to Register and File Corporate Taxes in Oman

In Oman, corporate tax compliance begins with the activation of your digital profile. After incorporating your company with the Ministry of Commerce, Industry and Investment Promotion (MOCIIP), you must separately register with the Oman Tax Authority (OTA) to obtain your Tax Identification Number (TIN). This serves as your primary key to the OTA’s online tax portal, the centralized gateway for all tax filings and payments.

You are legally required to register within 60 days of incorporation, regardless of your revenue status. Emerhub streamlines this process by handling the registration and preparing the mandatory documents:

• Your company’s Commercial Registration (CR) certificate
• Applicable business or municipal licences
• Passport and civil ID copies for authorised signatories
• An authorisation letter appointing your tax representative

Key Filing Deadlines and Requirements

Oman enforces a strict filing calendar. Even if your entity is dormant or in a “startup” phase with no revenue, the Sultanate expects a “Nil” return to be filed by the respective deadlines. Here are the tax compliance deadlines you should be aware of:

Tax Type	Frequency	Filing & Payment Deadline
CIT Return	Annual	Form 14 (Final Return); within 4 months of your financial year-end.
Withholding Tax (WHT)	Monthly	Form 18 (WHT Statement); Within 14 days of the end of the month in which the payment was made.
VAT Returns	Quarterly	Form Tax 201; Within 30 days of the end of the quarter (e.g., April 30th for Q1).
Excise Tax	Quarterly	Excise Return; Within 30 days of the end of the quarter.

• Note that: The OTA typically reviews tax positions within a five-year window, but you’ll have to retain supporting records for ten years. This becomes particularly relevant once you start making cross-border payments, charging management and technical fees, where documentation and pricing are often reviewed more closely.

To manage this smoothly, Emerhub supports foreign companies in Oman with tax registration, ongoing filings, and record keeping that protects your tax position. We ensure that your tax compliance holds up during OTA audits. 

Gain access to trusted local experts for your tax compliance in Oman today. Fill out the form below for a free consultation with our team.