OMAN TAX GUIDE 2026
Oman Tax 2026: A Practical Guide for Companies and Investors
Oman tax rules affect every company that carries out business in the Sultanate. The relevant obligations may include income-tax registration, an annual income-tax return, VAT registration and returns, withholding tax on specified cross-border payments, and special rules for free-zone activity or large multinational groups.
The correct result depends on the legal entity, income, taxable supplies, payments abroad, accounting period, activity and location. A foreign-owned company does not receive an automatic tax exemption. This guide is a planning resource reviewed on 16 September 2026. For a live case, the company’s accounts, contracts, tax status and current official portal record are reviewed as part of the required tax work.
Personal income tax from 2028
This page mainly covers company tax. Oman’s Personal Income Tax Law is scheduled to apply from 1 January 2028 and uses separate rules for natural persons, residence, foreign income and income categories.
Freelancers, remote employees, traders and investors should read the separate guide to personal tax for freelancers, remote workers and traders. Company revenue and personal income must not be treated as the same taxpayer.
Tax map for a company in Oman
- Register the company or establishment for income tax within the applicable period.
- Check whether the normal 15% rate or a qualifying small-enterprise rule applies.
- Check the rolling VAT turnover tests and the nature of the supplies.
- Review payments to non-residents for possible withholding tax.
- Keep returns, invoices, accounts and evidence even when the business has no trading activity.
- Check free-zone, excise, customs, personal-income-tax and multinational-group rules where relevant.
Oman tax at a glance
| Obligation | Main rule | Typical deadline |
|---|---|---|
| Income-tax registration | Generally required for CR holders carrying out economic activity | Within 60 days from the start of the enterprise or activity, as applicable |
| Corporate income tax | 15% of net taxable income for normal companies and permanent establishments | Paid with the annual return |
| Qualifying small-enterprise rate | 3% when every legal condition is met | Return within 3 months after the tax year |
| Normal annual return | Required even where there is a loss, no activity or claimed exemption | Within 4 months after the tax year or accounting period |
| VAT | 5% standard rate; registration thresholds apply | Quarterly return normally within 30 days |
| Withholding tax | Usually 10% on specified Oman-source payments to a non-resident | By the 14th day after the month of payment or credit |
Income-tax registration and corporate tax
The Oman Tax Authority states that income tax applies to commercial registrations regardless of grade and that CR holders must register for income tax. The general registration period is 60 days from the beginning of the enterprise or start of activity, whichever applies under the registration rule. Income-tax registration is separate from VAT registration; a company may need an income-tax file even when its sales are below the VAT threshold.
The normal 15% rate
The normal corporate income-tax rate is 15% of net taxable income for an Omani company, establishment or permanent establishment of a foreign company, unless a special rule applies. Taxable income begins with business income and gains, then applies the deductions, losses and exemptions allowed by law and supported by proper records. Accounting revenue is not the same as taxable income, and the tax is not calculated on turnover alone.
The 3% small-enterprise rule
The Tax Authority FAQ lists these conditions for the 3% regime: registered capital not above OMR 60,000, annual gross income not above OMR 150,000, no more than 25 workers and an activity that is not a professional activity. A foreign-owned company must not assume that meeting the numerical thresholds is enough. Confirm the legal form, ownership, activity and current Tax Authority treatment before relying on the reduced rate.
A possible exemption for a qualifying Omani small establishment is a separate legal question. An exemption from tax does not necessarily remove the annual return obligation.
Annual income-tax returns
The annual return is submitted electronically through the Tax Authority portal and reports income, expenses, taxable income and tax due. A taxpayer subject to 15% generally files within four months after the end of the tax year or accounting period and attaches the required accounts, including audited accounts under the normal filing rule. A qualifying 3% taxpayer generally has three months.
For a company with a 31 December year end, the usual dates are 30 April for the normal regime and 31 March for the 3% regime. The registered accounting period must be checked before using an example date.
Inactive, loss-making and exempt companies
No sales, no profit or no employees does not automatically close the tax file. The Tax Authority says a taxpayer that did not practise the activity and had no workers should submit the return with revenue and expenses entered as zero and attach a signed and stamped non-activity letter. The detailed inactive-company tax return guide explains the evidence and filing question. Formal closure requires cancellation or liquidation and separate tax-file procedures.
VAT registration and returns
Oman’s standard VAT rate is 5%. The VAT result depends on the exact goods or services, customer, place of supply and supporting documents. Mandatory registration for a resident business generally starts when taxable supplies reach or are expected to reach OMR 38,500 under the rolling 12-month tests. Voluntary registration may be available from OMR 19,250. A non-resident making taxable supplies in Oman may have separate registration rules.
The threshold concerns taxable supplies, not profit. Standard-rated and zero-rated supplies may count differently from exempt supplies. After registration, the business must issue correct tax invoices, charge VAT where required, file returns, pay VAT due and retain evidence. The VAT registration in Oman guide covers the threshold and filing duties in more detail.
VAT return timing
VAT periods are normally quarterly: January to March, April to June, July to September and October to December. The return and payment are normally due within 30 days after the end of the tax period. Input VAT needs valid documents and must relate to the business activity.
Fawtara e-invoicing schedule
Tax Authority Decision 189/2026 amended the VAT Executive Regulation and set the general implementation dates for electronic tax invoices. The 2026 selected-company group is part of the implementation process; it is not the general deadline for every VAT taxpayer. The Fawtara Oman 2027 requirements article explains the taxpayer groups and implementation sequence.
| Start date | VAT-registered taxpayers covered |
|---|---|
| 1 April 2027 | Annual supplies above OMR 5 million |
| 1 October 2027 | Annual supplies of OMR 5 million or less |
The amended rules require an approved and secured electronic tax invoice with a unique invoice number and address system security, continuity and data recovery. A normal PDF should not automatically be treated as a compliant structured e-invoice. Businesses should confirm their category and the latest technical instructions before implementation.
Withholding tax on cross-border payments
Withholding tax can apply when an Oman taxpayer or government body pays or credits specified Oman-source income to a non-resident without a permanent establishment in Oman. The general rate is 10% of the gross amount for the categories covered by the law and current guidance. For service-by-service examples and treaty checks, see the Oman withholding-tax guide.
| Payment category | General rate |
|---|---|
| Royalties | 10% |
| Research and development | 10% |
| Use or right to use computer software | 10% |
| Management fees | 10% |
| Performance of services | 10% |
The Oman payer normally deducts and remits the amount by the 14th day after the end of the month in which the amount was paid or credited. A double-tax agreement may reduce or remove the amount when the treaty conditions and evidence are satisfied. Transport, shipping and insurance of goods, training, certain overseas costs and services connected to activity or property outside Oman may receive different treatment under the Tax Authority FAQ.
Oman’s statutory materials and the January 2023 Royal Directives require particular care for dividends and interest. The Financial Services Authority reported that the Royal Directives ceased withholding tax on dividends and income from bonds and sukuk for foreign investors. Confirm the current treatment for the recipient, instrument, contract and treaty before payment.
Financial Services Authority announcement on dividends and bond and sukuk income
Free-zone tax limits
A free-zone or special-economic-zone address does not automatically mean zero tax. Royal Decree 38/2025 provides a conditional 10-year income-tax exemption period for qualifying projects and operators from the start of activity, with possible extensions for activities of a special nature under the applicable executive rules. The activity, licence, project agreement, start date and formal exemption decision must be checked.
The law excludes or treats certain sectors differently, including banking and financial institutions, insurance and reinsurance, telecommunications, contracting and some transport activities. Even an exempt project must submit the required income-tax returns and supporting documents. Sales into mainland Oman can also create VAT, customs and other obligations.
Other rules that may matter
- Excise tax: businesses importing, producing or trading in excise goods may need registration before the activity.
- Customs: the common duty is often 5%, but the product code, origin, exemptions and zone movement determine the result.
- Personal income tax: the law is scheduled to apply from 2028 at 5% where the statutory annual-income threshold of OMR 42,000 is exceeded; this is a personal tax, not corporate income tax.
- Top-up tax: the separate multinational-group rules mainly concern groups with consolidated revenue of at least EUR 750 million in at least two of the previous four years.
- Social-protection contributions: employer and worker contributions are employment obligations and should be checked separately from company income tax and VAT.
Penalties and record keeping
Late payment of income tax can attract additional tax of 1% per month on the unpaid amount. Failure to submit an income-tax return may lead to a penalty from OMR 100 to OMR 2,000. A company should keep its tax calendar, accounts, invoices, customs records, contracts, payment evidence and Authority correspondence active even when business is slow. Companies with missing periods or expired Tax Cards can use the Oman tax cleanup guide as a separate issue-led reference.
VAT records are generally retained for 10 years, with a longer period commonly applying to real-estate records. The retention period and evidence required for a particular transaction should be checked against the current VAT rules.
Company tax checklist
- Confirm the CR, legal name, Tax Identification Number and principal officer.
- Confirm the accounting period and every annual-return deadline.
- Keep a separate income-tax and VAT calendar.
- Test taxable profit and document business expenses.
- Review each foreign payment before it is paid or credited.
- Check whether the business is approaching a VAT threshold.
- Save submitted returns, payments, invoices, accounts and correspondence.
- Review free-zone exemptions through the project and activity documents.
Frequently asked questions
Does every Oman company register for income tax?
The Tax Authority states that all CR holders must register for income tax. Registration is separate from VAT registration.
Does an inactive company still file?
Generally yes. The Tax Authority says a non-trading taxpayer should file the applicable return, enter zero activity where appropriate and attach the required non-activity evidence.
Is Oman corporate tax 15% of revenue?
No. The normal rate is 15% of net taxable income after the tax rules for deductions, losses and exemptions are applied.
Is VAT the same as corporate income tax?
No. VAT is a transaction tax based on supplies, while corporate income tax is calculated on taxable income. A company may have one obligation without the other.
Does a free-zone company automatically pay zero tax?
No. Free-zone relief is conditional, activity-specific and document-based. Returns and supporting evidence may still be required.
Can a foreign-owned company automatically use the 3% rate?
No automatic assumption is safe. The legal form, ownership, activity, thresholds and current Authority treatment must be confirmed.
Related Oman Verified guidance
- Oman tax services for companies
- Oman Tax Card renewal requirements and support
- Corporate tax return filing in Oman
- Oman free zones for foreign investors
- Company liquidation and CR cancellation
Official sources
- Oman Tax Authority Income Tax FAQs
- Oman Tax Authority Tax Returns overview
- Oman Tax Authority E-invoicing
- Tax Authority Decision 189/2026
- Financial Services Authority announcement on withholding tax
Oman Verified coordinates client-side tax preparation, case organisation and follow-up in Oman; official tax services and decisions are completed through the Oman Tax Authority. Tax outcomes depend on the company’s legal form, activity, records, contracts and current official guidance.
