October 2025 Tax Deadline Guide
Every month, there are specific dates to keep track of meetings with tax authorities, which involve either fulfilling payment duties or submitting reports, based on your circumstances. Let's delve into the crucial tax deadlines for October 2025 and discover all the details required for payments by individual entrepreneurs, professionals, companies, and more.
Deadlines for October 10
Friday, October 10, is the final day to request a cancellation or reduction of the second IRPEF advance payment. For those using tax assistance, this is the last opportunity to inform their employer in writing that they either do not wish to make the second or only IRPEF advance payment, or prefer to pay a smaller amount than what is indicated on their payslip (Form 730-3).
Deadlines for October 15
On Wednesday, October 15, the deadline approaches for canceling a Redditi form (and related Redditi Pf correction forms) filed without an F24 form using the web application. This deadline also applies to income registration for non-profit associations under the preferential regime. Additionally, VAT entities must issue and record pending invoices for goods delivered or shipped the previous calendar month.
Deadlines for October 16
Thursday, October 16, is by far the busiest day of the month regarding tax obligations, with 17 engagements with tax authorities lined up:
- 770/2025 SIMPLIFIED FORM | Submitting a summary and paying withholdings
- CONDOMINIUMS AS TAX AGENTS - Withholding payment
- INCOME DECLARATION | Tax payment for those opting for the installment plan
- INCOME DECLARATION | Deferred tax payments for ISA holders
- ENTERTAINMENT TAX - Monthly payment
- INSURANCE COMPANIES | Payment of deductions
- INPS: Contributions to a separate system for freelancers
- INPS: Contributions for employed individuals
- VAT - Monthly VAT settlement and payment
- VAT - Monthly VAT settlement and payment for entities facilitating remote sales
- VAT - Installment payment on the 2024 VAT balance
- SHORT-TERM LEASE - Deduction payment from amounts received or paid
- OICR - Income tax withholdings payment
- TAX AGENTS - Payment of a substitute tax on productivity growth
- TAX AGENTS - Withholding payment
- SPLIT PAYMENT — VAT payment from split payments
- TOBIN TAX — Monthly tax payment on financial transactions
Deadlines for October 27
Monday, October 27, marks the deadline to submit a supplemental return (Supplemental Form 730) through CAFs or qualified professionals (including employer assistance) if the previous declaration had errors that don't impact the tax assessment or if the amendment leads to a refund or reduction in the taxpayer's liability.
Tax deadlines for October 31
October 31st is another significant day filled with tax responsibilities, featuring as many as 24 deadlines:
- EXCISE TAXES - Benefits on diesel fuel for vehicles for Q3 2025
- RENTAL - Registration of lease agreements and payment of registration fees
- AUTONALOG | Payment
- CANON RAI - Quarterly installment payment
- CASH INTEGRATION - Claims for uncontrollable events from the previous month
- UNIQA 2025 CERTIFICATION | Electronic submission
- NATIONAL AND GLOBAL CONSOLIDATION | Declaration filing
- 2025 INCOME DECLARATION FOR HEIRS | Filing
- 2025 INCOME DECLARATION FOR IRES ENTITIES | Submission
- 2025 INCOME DECLARATION | Filing
- FUEL DISTRIBUTORS - Income data submission
- NON-PROFIT ORGANIZATIONS AND EXEMPLARY FARMERS - Monthly return filing on Form INTRA 12
- NON-PROFIT ORGANIZATIONS AND EXEMPT FARMERS - Payment of intra-European VAT
- INARCASSA: Income statement
- INPGI: Autonomous journalists' fees - payment
- ISCRO — Freelance benefit application
- VAT - Monthly IOSS declaration and settlement
- VAT | OSS declaration and settlement
- MODEL 770/2025 - Declaration submission
- MODEL IVA TR | Quarterly VAT credit refund or compensation
- Tax Amnesty Installment Plan 2018-2022 — Replacement tax payment
- TRANSPARENCY REGIME | Election for 2025-2027
- SUPER-AUTO TALK | Payment
- UNIEMENS: Submission of data on salaries and contributions for the previous month
