Guide to UAE Corporate Tax Deadline: Avoid Penalties in 2025

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The UAE introduced corporate tax in June 2023, marking a significant change for businesses in the country. Under this new system, companies must file their corporate tax returns every year, within nine months after their financial year ends. For example, if your business follows the January–December financial year, your first tax return deadline will be 30 September 2025.
This UAE corporate tax deadline is very important because missing it can lead to serious issues, including fines, extra charges, and even interest on unpaid taxes. In some cases, repeated delays may trigger audits or affect your reputation with the Federal Tax Authority (FTA). Even free zone businesses that enjoy the 0% corporate tax rate must still file their returns on time – filing is mandatory for everyone.
It’s also crucial to be aware of the corporate tax registration deadline UAE has set for new and existing businesses. Timely registration ensures your company is recognized by the FTA and avoids penalties for non-compliance.