Tax deadlines
Correcting an Italian 730 tax return in 2026: which form?
Tax deadlines · · 3 min read
By Lorenzo Schiavone · calculator developer
Already submitted 730/2026 and found an error? If the correction increases your credit, reduces your debt or leaves tax unchanged, a CAF or authorised professional can submit a 730 integrativo by 26 October 2026. A correction increasing tax follows a different route. Checked on 12 October, this guide concerns 2025 income.
Choose the route by the correction’s tax effect
The Revenue Agency’s deadline calendar confirms 26 October for favourable or tax-neutral integrative returns. This does not generally reopen ordinary 730 filing, which ended on 30 September.
| Situation | Route | Relevant deadline |
|---|---|---|
| Omitted expense increases credit or reduces debt | 730 integrativo through a CAF or authorised professional | 26 October 2026 |
| Correction leaves tax unchanged | 730 integrativo through a CAF or authorised professional | 26 October 2026 |
| Omitted income reduces credit or increases debt | Corrective Redditi PF; check payments and voluntary regularisation | 2 November 2026 |
| Withholding-agent refusal notified in the application | Specific type-2 730 integrativo procedure | 10 November 2026 through the application |
Example: a forgotten deductible expense
Suppose the filed return shows a €600 refund. Adding an actually eligible, documented expense changes the result to €750: the correction is favourable. The €150 is an illustrative difference in the settlement, not a guaranteed refund for any particular expense.
Bring the complete original return, 730-3 settlement, filing receipt and corrected documents to the CAF. The integrative form must represent the complete return, rather than only the added item. Retain the new receipts too.
A missing CU is not necessarily favourable
A second CU can change rates, credits and benefits already recognised. Recalculate the outcome first. The Agency provides for corrective Redditi by 2 November 2026 to correct a 730; after that date, an integrative Redditi return may be considered within the applicable time limits.
If the correction reduces credit or increases debt, check tax, interest and any reduced penalty under ravvedimento operoso. Sending a new form does not itself regularise payments. There is no single penalty amount for every error.
10 November is a specific withholding-agent route
The application’s type-2 730 integrativo procedure concerns a withholding agent’s refusal to settle the return. In the relevant case, it allows another agent or no agent to be selected. The 10 November date is not a general extension for changing income or expenses.
Check the Agency’s notification and the procedure activated for your return. If tax figures also change, have all errors reviewed together rather than treating the case as merely replacing an employer.
Correcting a return and tracking a refund are different
A correction does not by itself cancel settlement operations already started under the original return. Compare results and amounts already paid or received with the person preparing the correction.
If the issue is only a delayed payment, read 730 refund not received. QuantoNetto does not submit returns, calculate voluntary-regularisation charges or inspect your tax file.
Frequently asked questions
Can I file a favourable 730 integrativo myself? ▾
The favourable or tax-neutral integrative return due on 26 October goes through a CAF or authorised professional, even if you filed the original yourself.
Can I correct any mistake until 10 November? ▾
No. That date concerns the application’s specific type-2 route following a withholding-agent refusal, not a general reopening.
Is a 730 integrativo sufficient if I owe more tax? ▾
No. Assess corrective or integrative Redditi and regularisation of any payments due.
Sources and method
- Agenzia delle Entrate · favourable integrative 730, 26 October 2026 deadline
- Agenzia delle Entrate · corrective and integrative Redditi returns
- Agenzia delle Entrate · type 2 integrative 730 after withholding-agent rejection
- Agenzia delle Entrate · 730/2026 tax settlement statement
An informational guide to the 2026 rules. Examples are annual estimates under the stated assumptions. Average pay does not reproduce a monthly payslip. Prior-year municipal rates are marked as estimates.