Latest Updates on Audit and Tax Regulations in Oman

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Oman has introduced significant changes to its audit and tax landscape in 2025, aligning with global standards and enhancing compliance mechanisms. Here's an overview of the key developments:

• 1.

• Corporate Tax Reforms

  Oman has introduced measures to enhance corporate tax compliance:

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  • Minimum Tax: A domestic minimum top-up tax of 15% has been implemented for multinational enterprises (MNEs) to align with OECD/G20 global tax standards.

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  • Supplementary Tax Law: Royal Decree No. 70/2024 establishes a supplementary tax framework for MNEs, focusing on transparency and compliance.

• 2.

• Value Added Tax (VAT) Updates

  Significant amendments have been made to Oman's VAT executive regulations:

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  • Refund Provisions: Non-taxable persons can now seek refunds for excess VAT paid on imports, provided certain conditions are met.

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  • E-Invoicing: The mandatory B2B e-invoicing rollout has been postponed to 2025 due to technical challenges.

• 3.

• International Tax Treaties

  Oman has ratified Double Taxation Avoidance Agreements (DTAAs) with Cyprus and Tanzania, effective from 3 March 2025. These agreements aim to eliminate double taxation and prevent tax evasion.

Key Tax & Audit Filing Deadlines in Oman (2025)

Filing Type	Deadline	Notes
VAT Returns	End of the month following the tax period	E.g., Q1 VAT return due by 30 April 2025
Withholding Tax (WHT)	Within 14 days from the end of the month in which payment was made	Covers payments like royalties, interest, etc.
Corporate Tax Return	Within 6 months from end of financial year	For FYE 31 Dec 2024, due by 30 June 2025
Audited Financial Statements (FS)	Same as CT Return – 6 months post-FYE	Mandatory if turnover > OMR 300,000
Provisional Tax Return	Within 3 months of financial year-end	For FYE 31 Dec 2024, due by 31 March 2025

Conclusion

Oman's 2025 tax reforms reflect a commitment to modernizing its tax system and aligning with international standards. Businesses operating in Oman should stay informed about these changes to ensure compliance and optimize their tax strategies.