How to Fill Out the 730 Tax Form in Italy

The Modello 730 is the straightforward way for employees and pensioners to file Italy’s personal income tax. Your withholding agent (employer or pension payer) does the settlement: refunds are credited in your payslip/pension, and balances due are withheld automatically. If you have business income with a VAT number or foreign-asset reporting (RW), you generally switch to Modello Redditi PF instead. Everything below focuses on how to fill the 730 correctly, whether you use the pre-filled online version or file through a CAF/professional—with the exact points people miss most.

1) Check you’re eligible (before you start)

Use the 730 if, in the tax year, your income profile fits the perimeter: employment or pension income (and similar assimilated categories), plus typical items like rentals (including cedolare secca if chosen), investment income handled under withholding at source, and expense-based credits. If you have an active partita IVA, foreign assets to monitor (RW), or capital gains/financial items that require RT/RM/RW schedules, plan for Modello Redditi PF instead of the 730.

2) Choose your route: pre-filled online or assisted filing

Pre-filled (precompilato). In the Revenue Agency portal you’ll find a return prepopulated with data from third parties: CU (employers/pension funds), mortgage interest, health expenses transmitted by pharmacies and clinics, education fees, eligible insurance premiums, and recurring building-bonus instalments. You review, correct, add what’s missing, and submit.

CAF/tax professional. Bring your documents and they’ll compile and file the 730 for you. This is helpful if your pre-filled file is incomplete (new rental, family status change), you prefer a review, or you need a 730 without withholding agent (explained below).

3) Gather documents once, use them twice

• Identity & status: codice fiscale, ID, address, marital/family updates.

• Income: Certificazione Unica (CU) from each payer; any additional statements (occasional income, certain scholarships, etc.).

• Property & rentals: cadastral data, lease contracts, cedolare secca choices, payments received, agent invoices.

• Deductions & credits: mortgage interest certificate; medical invoices (with proof of traceable payment where required); education receipts; life/accident insurance within legal caps; childcare; donations; building-bonus instalments; other eligible items.

• Family proofs: dependent spouse/children documentation (age, disability if applicable), shared-custody agreements.

• Withholding agent details: your employer/pension payer so the system knows where to route refunds/withholdings—or plan a 730 senza sostituto.

4) Open the pre-filled 730 and verify the backbone first

Log in with SPID/CIE/CNS. In this order:

Anagrafica. Confirm personal data, tax residence for the year, and withholding-agent details. If you changed job or payer mid-year, ensure the current payer is listed correctly for settlement.

Family & dependents. Add or remove dependents; pick the correct months of dependency and share (especially with shared custody). Getting this wrong can swing credits significantly.

CU data. For each CU, check gross amounts, withheld tax, and INPS contributions. Missing a CU (multiple employers/pension payers) is a classic cause of unexpected balances due later.

Property & rentals. Make sure cadastral data match your deeds/previous returns. For cedolare secca, indicate the option, rate, and exact rental period (start/stop dates). Mismatches here can block submission.

5) Enter deductions and credits the way the software expects them

Mortgage interest. Use the lender’s annual statement. Only eligible interest is deductible up to statutory limits; enter the correct ownership percentage and months.

Healthcare. Many expenses are preloaded from the national health system flows. Add missing items and check the traceable payment rule (cards/bank) where required; some medical categories are exempt from traceability, but most are not.

Education & childcare. Enter fees with the required identifiers (school/university) and respect annual caps. Keep receipts in case of matching checks.

Insurance premiums. Only specific policies (life/accident/long-term care) qualify, within amount limits; enter the policy holder and covered person correctly.

Building bonuses. If you’re continuing instalments from past works, the portal usually imports them. If you bought a property that carries remaining instalments, confirm that the right to continue has legally transferred before claiming them.

6) Understand how the tax is computed so your expectations are realistic

The software calculates national IRPEF using the current three-band schedule and then subtracts your credits (work/pension, family, expense-based). On top of national IRPEF, it adds the regional and municipal add-ons based on your tax residence and local rates. If you want a refresher on the maths behind the three bands—and why payslips show those constants—see Understanding Italian Income Tax Bands before you finalize.

7) Pick the right settlement path: with or without a withholding agent

Standard 730 (with sostituto). If your employer/pension payer can settle the return, refunds are credited in the first useful payroll/pension cycle after processing; amounts due are withheld in instalments. This is the main convenience of the 730.

730 senza sostituto. If you qualify for the 730 but don’t have a payer who can settle (job ended, new job not yet active, or pension change), choose the no-withholding-agent option:

• Refunds are paid directly by the Revenue Agency to your registered IBAN;

• Debits are paid via F24 (you or your CAF/pro handle the payment).
  This preserves the 730 workflow without routing through payroll.

8) Validate, sign, and submit—then download the proof

Use the portal’s consistency checks to catch missing fields or obvious conflicts (e.g., dependent months > 12). Review the liquidation sheet that shows how national IRPEF, credits, and add-ons combine into a refund or balance. When you submit, save:

• the protocol/receipt;

• the PDF of the filed return;

• the payment schedule (if debits apply).
  If you file through a CAF/pro, ask for the same packet and verify your withholding agent is correctly indicated or that the 730 senza sostituto option is ticked.

9) Rentals and cedolare secca: the three checks that prevent rework

1. Option ticked (or renewed) for the correct property and period;

2. Cadastral data and ownership share aligned with land registry;

3. Withholding or advance payments entered when due.
   For short-term lets managed through platforms, ensure the income is mapped to the correct field (withholding already applied vs. not).

10) Mid-year changes that often break the pre-filled logic

Multiple payers. Each payer withholds as if they were your only source. The 730 adds them up; expect a balance due unless you requested supplemental withholding during the year.

Bonuses and fringe benefits. Large year-end bonuses can push only the top slice into the 43% band; earlier slices keep their lower rates. Some benefits are taxable, some exempt within thresholds—enter them as per the CU.

Part-year work or pension. Payroll may have over-withheld assuming 12 months. The 730 typically turns that into a refund; don’t omit months with zero income—let the CU drive the totals.

11) If you spot an error after filing

Within the official filing window you can submit a corrective 730; after that window, specific integrative paths apply. If your CAF/pro filed and made a mistake, ask about their liability and correction process. Keep all receipts and bank proofs for credits you claimed—matching checks use those to validate your entry.

12) Quick pre-submission checklist

• All CUs attached (every employer/pension payer).

• Dependents entered with correct months and percentages.

• Mortgage/medical/education/insurance numbers match certificates and receipts; traceable payments recorded where required.

• Rentals and cedolare secca set with correct dates, rates, and cadastral data.

• Withholding agent set—or 730 senza sostituto selected with IBAN on file.

• PDF + protocol saved; calendar marked for any F24 deadlines if you owe a balance.

Following this sequence keeps the 730 exactly what it’s meant to be: a clean reconciliation of a year’s income, credits, and local layers—processed automatically through your payslip or, when needed, through the Agency with a 730 senza sostituto.