Oman VAT Guide: Current Rate, Registration Rules and Deadlines

Oman VAT Law: What Businesses Need to Know Today

Oman’s Value Added Tax system is no longer an upcoming change. VAT has applied across the Sultanate since 16 April 2021, under Sultani Decree No. 121/2020, making Oman the fourth Gulf Cooperation Council member to introduce VAT after Saudi Arabia, the UAE, and Bahrain. More than five years into implementation, the tax is a permanent part of doing business in Oman, and the compliance rules around it have continued to evolve, including a new phased e-invoicing rollout beginning in 2026.

Oman introduced VAT for the same reasons its GCC neighbors did: falling oil revenue and widening budget deficits made a broader, non-oil revenue base necessary. In the years since, the Oman Tax Authority (OTA) has issued detailed executive regulations, registration thresholds, and penalty frameworks that businesses trading with or operating in Oman still need to track. This guide sets out where things currently stand: the rate, who must register, how registration and filing work, what is exempt, and what UAE-based businesses with Omani operations or suppliers should watch for.

Oman VAT Rate and Legal Framework

Oman applies a standard VAT rate of 5% on most goods and services, one of the lowest VAT rates globally and in line with the minimum rate set under the 2016 GCC Unified VAT Agreement. VAT in Oman is governed by Sultani Decree No. 121/2020 (the VAT Law) and its executive regulations, and it is administered by the Oman Tax Authority through its online e-services portal.

VAT is separate from Oman’s excise tax, which applies to specific goods regardless of VAT registration status. Excise tax is charged at 100% on tobacco products, alcohol, energy drinks, and pork products, and at 50% on carbonated and sweetened beverages. Businesses that deal in these categories need to account for excise tax and VAT separately, since the two are calculated and reported under different rules.

VAT Registration Requirements in Oman

Registration obligations in Oman are based on the value of a business’s taxable supplies over a 12-month period, similar in structure to the UAE’s threshold model but set at different values.

• Mandatory registration: businesses with taxable supplies exceeding OMR 38,500 in the current or previous 12 months (or expected to exceed that figure in the next 12 months) must register for VAT.
• Voluntary registration: businesses with taxable supplies or expenses exceeding OMR 19,250 may register voluntarily.
• Non-resident businesses: any non-resident making taxable supplies in Oman must register regardless of value; no minimum threshold applies.

Registration is completed through the Oman Tax Authority’s e-services portal. A business needs its commercial registration details, financial records supporting its taxable supply value, and authorized signatory information to complete the application. The OTA reviews the application and issues a Tax Identification Number (TIN) and VAT registration certificate once approved; the effective registration date determines when VAT charging and filing obligations begin.

Also check: VAT Registration Services in UAE

Businesses that delay registration past the point their turnover crosses the mandatory threshold remain liable for VAT from the date registration should have occurred, not just from the date they actually register, and late registration also extends how far back the OTA can audit the business (see penalties below).

Zero-Rated and VAT-Exempt Supplies in Oman

Not all supplies in Oman carry the 5% standard rate. Some are zero-rated, meaning VAT is charged at 0% but input tax on related costs can still be recovered; others are exempt, meaning no VAT is charged and related input tax generally cannot be recovered.

Categories that receive zero-rated or exempt treatment include:

• Basic foodstuffs
• Charitable and not-for-profit supplies
• Financial services
• Education and related educational services
• Medicines and medical equipment
• Healthcare services
• Passenger transport
• Supplies related to persons with disabilities
• Undeveloped (bare) land
• Sale and lease of residential property
• Investment-grade precious metals (gold, silver, platinum)
• Supplies of certain aircraft and sea vessels
• Crude oil, natural gas, and petroleum derivatives
• Exports of goods and services outside Oman, and international transport

Businesses supplying a mix of standard-rated, zero-rated, and exempt goods or services need to apportion input tax recovery correctly; misclassifying a supply is one of the more common sources of VAT assessments in Oman.

Oman VAT Invoice Requirements

A valid VAT invoice in Oman must include specific details for the Oman Tax Authority to accept it as supporting documentation. Required fields include:

• Supplier’s name, address, and VAT Identification Number (VATIN)
• A sequential invoice number
• The words “Tax Invoice” clearly stated
• Date of issue
• Customer’s name and address (and VATIN, where the customer is VAT-registered)
• Description and quantity of goods or services supplied
• Gross value of the supply in Omani Rials (OMR)
• VAT amount calculated correctly at the applicable rate
• Net value after VAT

From August 2026, Oman is phasing in mandatory electronic invoicing (known as Fawtara) through the OTA, beginning with the largest VAT-registered taxpayers and extending to all VAT-registered businesses by August 2027. Businesses trading with Omani counterparties should confirm which invoicing format their suppliers and customers are required to use as the rollout progresses.

Oman VAT Filing, Payment and Penalties

VAT-registered businesses in Oman file returns quarterly through the OTA e-services portal. The return, along with payment of any VAT due, must be submitted within 30 days of the end of the relevant tax quarter; where the deadline falls on a weekend or public holiday, it moves to the next working day.

The Oman Tax Authority applies the following penalty structure for non-compliance:

• Late payment: an additional 1% of the unpaid VAT is charged for every month (or part of a month) the amount remains outstanding.
• Late filing: an administrative penalty ranging from OMR 500 to OMR 5,000, depending on the circumstances.
• Late registration: a penalty in the same OMR 500 to OMR 5,000 range, and the OTA’s assessment window against the business extends from the standard 5 years to 10 years.

Because the assessment window doubles for late registrants, businesses that discover they crossed the mandatory threshold without registering are generally better positioned addressing it proactively with the OTA than waiting for an audit to surface the gap.

Oman VAT vs UAE VAT: A Quick Comparison

Many businesses registered for VAT in the UAE also trade with or operate in Oman, and the two systems, while both built on the GCC Unified VAT Agreement, differ in several practical respects.

A UAE-registered business is not automatically VAT-registered in Oman, and vice versa; each registration, filing cycle, and set of exemption rules is administered separately. Cross-border transactions between the two jurisdictions still need to be assessed on their own terms, particularly for services, which are treated differently from goods under the place-of-supply rules in each country.

Must check: VAT Consultants in UAE

Common Oman VAT Compliance Mistakes for UAE Businesses

UAE businesses expanding into Oman, or trading regularly with Omani suppliers and customers, tend to run into a similar set of avoidable issues:

• Assuming UAE VAT registration covers Oman. The two are entirely separate tax registrations with separate thresholds and filing systems.
• Missing the mandatory threshold trigger. Businesses often track annual revenue in aggregate but fail to monitor the rolling 12-month taxable supply test that determines when Oman’s mandatory threshold is crossed.
• Misapplying zero-rated treatment to exports. Exports and international transport are zero-rated, not automatically outside the scope of VAT; the distinction affects input tax recovery and still requires correct invoicing.
• Treating excise tax and VAT as one calculation. Excise-liable goods (tobacco, alcohol, energy drinks, sweetened beverages) require separate excise tax accounting in addition to VAT.
• Delaying registration once the threshold is crossed. Late registration triggers penalties and doubles the OTA’s audit lookback period from 5 to 10 years.
• Overlooking the e-invoicing transition. As Fawtara e-invoicing rolls out through 2026 and 2027, invoices that meet only the old paper-format requirements may not satisfy the new mandate for affected taxpayers.

For UAE businesses with cross-border exposure to Oman, coordinating VAT positions across both jurisdictions, rather than treating Oman compliance as an afterthought to UAE VAT filings, reduces the risk of assessments and double taxation on shared transactions.

See also: International Tax Advisor in Dubai, UAE

Frequently Asked Questions (FAQs)

How Farahat & Co. Can Help

Farahat & Co. supports UAE-based businesses with cross-border VAT and tax advisory where operations, suppliers, or customers extend into other GCC markets, including structuring, documentation, and compliance planning for transactions that touch more than one jurisdiction’s tax rules.

Contact Farahat & Co. today to discuss your cross-border VAT and tax advisory requirements.