730 Precompilato: Come Si Compila - Complete Guide to Filing Your Italian Tax Return
Filing taxes can feel overwhelming, but Italy's 730 precompilato system has genuinely simplified the process for over 10 million taxpayers annually. Whether you're an employee, retiree, or freelancer with mixed income sources, understanding how to correctly compile your 730 return ensures accurate tax reporting and helps you capture every euro of refund you're entitled to. This guide walks you through the actual mechanics of the 730, section by section, with real-world examples you can apply immediately.
Understanding the 730 Precompilato: What You Need to Know
The 730 precompilato—officially Modello 730—is Italy's simplified tax return designed for salaried workers, pensioners, and qualifying freelancers. The "precompilato" (pre-filled) part is crucial: the Agenzia delle Entrate automatically populates your form with data they already possess—your employer's income declarations (CUD), pension statements (CRBF), and mortgage interest records.
This pre-filling cuts your work substantially. You're not starting from zero. Instead, you're verifying what's already there, correcting errors, and adding deductions the system couldn't know about. According to 2024 data, approximately 73% of Italian tax filers use the 730, making it the dominant filing method for dependent workers.
The 730 saves you time, but it also carries responsibility: incorrect submissions can trigger audits or missed deductions worth hundreds of euros annually. Getting it right matters.
Step-by-Step: How to Compile Your 730
Step 1: Access Your Pre-filled Return
Log into the Agenzia delle Entrate portal using SPID, CNS, or CIE credentials. The pre-filled version typically becomes available mid-April. You'll see your data organized in numbered sections corresponding to your income sources.
If you don't have SPID, apply immediately—it takes 15 minutes online through a digital identity provider like Poste Italiane or Aruba. Avoid the last-minute rush: most delays during tax season stem from authentication issues.
Step 2: Verify Section One—Personal Data and Income
This section contains your name, tax ID (codice fiscale), residence address, and marital status. Check this carefully. Even a single digit error in your codice fiscale can delay your refund by months.
Below that sits your employment income, already pulled from your employer's CUD (Certificazione Unica). Verify:
- Total gross salary reported
- Withholding taxes already paid
- Days worked (for part-time employees or mid-year hires)
- Any bonuses or additional compensation
If your employer didn't submit the CUD data correctly—which happens in roughly 2% of cases—you'll need to add the correct figures manually or contact your employer to file an amended CUD.
Step 3: Add Deductions—Where Your Refund Likely Lives
This is where most taxpayers leave money on the table. Section III covers deductible expenses. Common ones include:
Mortgage interest: If you own your home with a mortgage, you can deduct up to €4,000 annually. This is automatically calculated if your bank submitted data to the Agenzia, but verify the amount.
Medical and dental expenses: Any costs exceeding €129.11 annually are deductible. Keep all receipts—doctor visits, dental work, glasses, hearing aids. Many people forget to claim these; they average €300-500 per household annually.
Charitable donations: Contributions to registered charities are 19% deductible (or 26% for cultural heritage). If you gave €500 to charity, you deduct €95-130.
Education expenses: Tuition for dependent children, university fees, and certain professional certifications qualify. The limit is €800 per dependent child annually.
Professional fees and union dues: Self-employed workers and employees paying union membership can deduct these fully.
The Agenzia's pre-filled data often misses medical expenses, donations, and some professional costs because they don't have automatic reporting of these items. Manually add them in the appropriate subsection.
Step 4: Review Tax Credits
Tax credits directly reduce your tax bill, making them more valuable than deductions. The 730 includes several automatic ones:
Dependent family members: €1,260-1,960 per child, depending on family income. The amount scales inversely to income.
First-home purchase credit: If you bought your primary residence in the last 4 years, you can claim a 19% deduction on purchase costs (up to certain limits).
Energy efficiency improvements: If you renovated your home with energy-efficient systems, you can claim 50-65% of costs.
Verify that dependent credits are correctly assigned. The Agenzia often pre-fills these, but errors occur when family circumstances changed during the year.
Step 5: Check Withheld Taxes and Calculate Your Position
Section IV shows "ritenute" (withheld taxes). Your employer should have withheld approximately 23% of your income for national taxes (the rate varies slightly by region and personal circumstances). Pension statements show withholdings separately.
Compare your total withheld taxes against your final tax liability. If you've had multiple jobs, your total withholding might be lower than owed because each employer withheld based on incomplete income information.
This calculation determines whether you owe additional taxes or receive a refund. Most Italian employees receive refunds because employers withhold conservatively.
Common Mistakes That Cost You Money
Not updating your personal information: Changing address, marital status, or dependents requires deliberate updates. The system doesn't automatically sync changes from other government databases.
Forgetting to claim medical expenses: This is the single most-missed deduction. Families average €500 in deductible medical costs but claim zero because the Agenzia doesn't know about them.
Claiming duplicate deductions: You cannot deduct mortgage interest as both a home-owner credit and a general deduction. The system should prevent this, but manually entered data can create conflicts.
Missing the filing deadline: The standard deadline is June 30th, though your accountant or authorized intermediary can file until September 30th. Missing it means automatic loss of your refund and potential penalties.
Not keeping supporting documentation: The Agenzia doesn't request receipts immediately, but if audited (especially for high-value claims), you'll need to produce originals for medical expenses, donations, and professional fees.
Filing Your 730: Submission Methods
You have three primary options:
Self-filing through the Agenzia website: Free but requires SPID authentication and technical comfort with the interface. Increases your audit risk slightly if you make data-entry errors.
Using a tax professional (commercialista or CAF): Costs €30-150 depending on complexity. Your professional bears some liability for errors and handles submission through secure channels, reducing audit risk.
Authorized CAF centers: Free or low-cost for employees. Over 4 million Italians use CAFs annually, and they typically process returns correctly.
Filing through a professional typically results in higher claimed deductions because they know which expenses are defensible. If your return is complex—multiple income sources, significant deductions, or business income—using a professional is worth the modest cost.
Domande Frequenti
D: Se il mio datore di lavoro non ha presentato la CUD, cosa faccio? R: Puoi compilare la 730 ugualmente inserendo manualmente i dati dal tuo ultimo cedolino. Contatta il datore di lavoro per richiedere la presentazione della CUD (ha fino al 28 febbraio). Se non viene presentata, puoi comunque ricevere il rimborso calcolato sui dati che hai inserito, ma in caso di controllo dovrai provare l'importo dichiarato con cedolini o documentazione bancaria. Molti commercialisti consigliano di attendere la presentazione della CUD per evitare discrepanze.
D: Posso detrarre spese mediche se non ho ricevuta fiscale? R: No. La ricevuta fiscale (con numero di partita IVA di chi ha erogato il servizio) è obbligatoria per le detrazioni mediche. Senza ricevuta, la spesa non è detraibile nemmeno se pagata privato. Assicurati di richiederla sempre presso ospedali privati, studi dentistici e centri oftalmologici. Se la ricevuta è smarrita, contatta il fornitore per ottenere un duplicato—molti la conservano per anni.
D: Qual è la differenza tra una detrazione e un credito fiscale? R: Una detrazione riduce il reddito imponibile