Tax Due Date Overview for October 2025

Every month has a set timetable for interactions with tax authorities, whether it involves meeting payment requirements or submitting reports, depending on the circumstances. Let's explore the significant tax due dates in October 2025 and understand the payment details for self-employed individuals, professionals, corporations, and others.

Deadlines by October 10

By Friday, October 10, individuals need to request the modification or reduction of the second advance payment on Form 730. Specifically, for taxpayers using tax aid, this marks the final day to inform their employer in writing about opting out of the second or sole advance payment for IRPEF or choosing to pay a lesser amount than specified on the payslip (Form 730-3).

Deadlines by October 15

October 15, Wednesday, signifies the deadline for canceling the Redditi form (and related forms) via the online platform. This includes the correction forms Redditi Pf), submitted independently of the F24 form. The same due date applies to reporting income for non-profit organizations under the favorable scheme. Furthermore, VAT-registered entities must issue and record outstanding invoices for goods dispatched or delivered in the previous month.

Deadlines by October 16

Thursday, October 16, emerges as the most hectic day of the month concerning tax responsibilities. There are a total of 17 tax deadlines set for this day:

Deadlines by October 27

By Monday, October 27, individuals must submit a supplementary return (Form 730 Supplemental) through CAF or certified professionals (including employer support) if the prior return contains non-impactful calculation errors or if rectifying it leads to a refund or reduced tax liability for the taxpayer.

Tax Deadlines by October 31

October 31 is another date packed with tax obligations. There are a total of 24 deadlines scheduled for the final day of the month: