UAE businesses face a major corporate tax deadline on September 30, 2026, for calendar-year filings. The Federal Tax Authority urged taxable persons to complete returns and payments through EmaraTax before the deadline. 

The deadline applies to businesses whose financial year ended December 31, 2025, while UAE corporate tax covers taxable income under rules effective from June 2023. Businesses must calculate taxable income, apply relevant reliefs, file returns, and settle tax through the Federal Tax Authority platform. 

The UAE corporate tax structure generally sets a 0% rate on taxable income up to AED 375,000. Taxable income above that threshold generally faces a 9% rate under the standard regime. 

The AED 375,000 threshold determines the applicable tax rate, not the filing requirement. Businesses may still need to register and submit returns even when taxable income creates no tax liability. 

Registration rules also depend on the taxpayer type and business structure. Companies established from March 1, 2024 generally must register within three months of incorporation, establishment or recognition. 

Natural persons conducting business must register when annual business revenue exceeds AED 1 million. Salary, private investment income, and real estate investment income do not count toward this threshold. 

Missing a required corporate tax registration deadline can trigger an AED 10,000 administrative penalty. The FTA currently provides a specific waiver initiative subject to conditions for eligible late registrants. 

Free Zone status also does not remove the corporate tax filing requirement. Qualifying Free Zone Persons can receive 0% treatment on qualifying income, while non-qualifying income generally faces the 9% rate. 

Small Business Relief can support eligible resident businesses with revenue up to AED 3 million. The relief covers qualifying tax periods ending on or before December 31, 2029, but filing remains mandatory. 

The FTA said timely compliance represents a ‘fundamental legal obligation’ for taxable persons under UAE tax legislation. 

Businesses must also retain supporting records for at least seven years after the relevant tax period. Late filing can attract AED 500 monthly during the first 12 months, rising to AED 1,000 monthly afterward. 

Also Read: UAE FTA Flags Corporate Tax Deadline; Businesses Urged to Avoid Late Filing Penalties