The 2026 tax return season, covering 2025 income, will begin on April 30, with the pre-filled 730 form available on the Revenue Agency's website. The 730 form must be submitted by September 30, while the personal income tax form must be submitted by November 2. Among the first deadlines to remember is March 16, the deadline for submitting the Single Certifications. The tax calendar also includes IRPEF payments and the option to submit the supplementary 730 form by October 26.