UAE Corporate Tax Filing Deadlines 2026: Complete Calendar

UAE corporate tax deadlines are tied to each entity's financial year — not a single calendar date for all businesses. Missing registration or filing triggers automatic FTA penalties that accumulate daily. Finance teams should map their obligations now for 2026 close and first annual return.

Registration Deadline

Taxable persons must register with the FTA within 3 months of becoming liable for corporate tax (typically from licence date or start of first tax period). New 2025–2026 incorporations should confirm registration status on EmaraTax immediately.

Annual Return Due Date

The corporate tax return is due within 9 months of your financial year-end. Example: December year-end → return due by 30 September the following year. Payment of tax due follows the same deadline unless instalments apply.

Provisional Tax Payments

Large groups or certain designated persons may be required to pay provisional tax in instalments. Check FTA notices on your EmaraTax dashboard — do not assume quarterly VAT rhythm applies to CT.

Penalties Overview

Late registration, late filing, and late payment each carry separate penalty schedules under Cabinet Decision. Voluntary disclosure before FTA audit often reduces exposure compared with waiting for assessment.

Align VAT, CT, and Audit

SMEs reduce cost when one advisory firm coordinates VAT returns, corporate tax modelling, and year-end audit. Misaligned timelines cause duplicate data requests and rushed provisions.

Action Checklist for 2026

- Confirm financial year-end and first CT period on EmaraTax - Calendar the return due date 9 months after year-end - Model small business relief and free zone 0% elections before year-end - Engage an FTA-accredited tax agent for first-time filers

Contact ISZ Global on WhatsApp for a free match to corporate tax specialists in Dubai and Abu Dhabi.