Italian Flat Tax Rental Calculator: Cedolare Secca 21% / 10%

Calculate Italian flat tax (cedolare secca) on rental income: 21% market rent, 10% controlled rent. Compare with progressive IRPEF and estimate landlord savings.

Calculation parameters
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The Italian flat tax rental calculator determines the substitute tax (cedolare secca) on Italian residential rental income according to the rates set by Legislative Decree 23/2011 art. 3: 21% for market-rate contracts (4+4 years standard), 10% for controlled-rent contracts (3+2 years in high-housing-tension municipalities, per L. 431/1998 art. 2 paragraph 3). Cedolare secca is a substitute tax that replaces IRPEF, regional and municipal surcharges, registration tax, stamp duty on residential rentals, drastically simplifying the tax regime for landlords. Note: this is an Italian-specific tax regime; the US uses different mechanisms (Schedule E rental income at ordinary tax rates, depreciation, Section 8 Section 469 passive activity rules). For owners of Italian properties (residents and non-residents earning Italian-source rental income filing Modello Redditi PF), this is the primary fiscal optimization tool.

Mathematical formula

The calculation compares cedolare secca with traditional IRPEF:

  • Cedolare secca: C = Annual rent × Rate (21% or 10%)
  • IRPEF on market rent: I = Rent × 95% × Marginal IRPEF rate
  • IRPEF on controlled rent: I = Rent × 66.5% × Marginal IRPEF rate (30% reduction L. 431/1998 + 5% expense deduction)
  • Annual savings: S = IRPEF − Cedolare (positive: cedolare advantageous)
  • 2026 IRPEF rates (Italian Budget Law 2026 L. 199/2025): 23% up to €28K, 33% €28-50K, 43% over €50K

The IRPEF calculation assumes rental income is taxed at landlord's marginal rate (on top of other income). The 5% maintenance cost reduction for market rents and 30% L. 431/1998 + 5% costs for controlled rent reduce the IRPEF taxable base, but not cedolare secca which applies to gross rent.

History and context of Italian cedolare secca

Cedolare secca was introduced in Italy with Legislative Decree 23/2011 art. 3 (Berlusconi IV-Tremonti government, municipal fiscal federalism) initially at 21% for market rent and 19% for controlled rent (later reduced to 10% in 2014 with L. 80/2014 art. 9 paragraph 1). The dual purpose was: combating tax evasion in residential real estate (then about 50% of rents undeclared) and incentivizing emergence of registered rental contracts. According to Italian Revenue Agency Cedolare Secca System Analysis 2024, since 2011 registered rental contracts increased 35%, generating €4 billion/year of emerged IRPEF revenue. The Italian Budget Law 2024 (L. 213/2023) introduced the 26% rate for second, third, and fourth property destined for short-term rental (Airbnb, Booking, ≤30 days), while the first property maintains 21%. References: D.Lgs. 23/2011, L. 431/1998, L. 213/2023, Agenzia delle Entrate Cedolare Secca Guide 2024.

Italian cedolare secca rates 2024-2026

Contract typeCedolare rateIRPEF base reductionWhen cedolare is advantageousNorm
Market rent 4+421%5% (95% taxable)Always if IRPEF marginal > 22%D.Lgs. 23/2011 art. 3
Controlled rent 3+210%33.5% (66.5% taxable)Always if IRPEF marginal > 15%L. 80/2014 art. 9
Short-term 1st property21%Same as marketCompare IRPEF marginalL. 178/2020 art. 4 par. 2
Short-term 2nd-4th property26%—Always if IRPEF marginal > 27%LdB 2024 (L. 213/2023)
5th property and beyondIRPEF only5% marketCedolare not applicableExcluded business activity

Sources: D.Lgs. 23/2011, L. 80/2014, L. 178/2020, Italian Budget Law 2024 (L. 213/2023), Italian Revenue Agency Cedolare Secca Guide 2024.

Five worked examples

Example 1 — €12,000 market rent 4+4 with 35% IRPEF. Cedolare 21%: 12,000 × 0.21 = €2,520. IRPEF: 12,000 × 0.95 × 0.35 = €3,990. Cedolare savings €1,470/year. Advantageous.

Example 2 — €9,600 controlled rent 3+2 with 23% IRPEF. Cedolare 10%: 9,600 × 0.10 = €960. IRPEF: 9,600 × 0.665 × 0.23 = €1,469. Cedolare savings €509/year. Advantageous even at minimum IRPEF rate.

Example 3 — Short-term Airbnb first property €18,000/year IRPEF 43%. Cedolare 21% (1st property): 18,000 × 0.21 = €3,780. IRPEF: 18,000 × 0.95 × 0.43 = €7,353. Cedolare savings €3,573/year. Highly advantageous.

Example 4 — Second Airbnb property €15,000 IRPEF 35%. Cedolare 26% (LdB 2024): 15,000 × 0.26 = €3,900. IRPEF: 15,000 × 0.95 × 0.35 = €4,987. Cedolare savings €1,087/year. Advantageous but reduced gap.

Example 5 — €6,000 rent with 23% IRPEF market. Cedolare 21%: 6,000 × 0.21 = €1,260. IRPEF: 6,000 × 0.95 × 0.23 = €1,311. Cedolare savings €51/year. Marginal, choice based on documentary simplicity.

Model limitations

The calculation has practical limits: rent increase block: cedolare obligates landlord not to increase rent (e.g., ISTAT inflation) for contract duration (D.Lgs. 23/2011 art. 3 paragraph 11). Lost IRPEF deductions: with IRPEF you can deduct renovation expenses, primary home mortgage interest, medical expenses; with cedolare you renounce these deductions on rental taxable base. Family quotient: for low incomes and large families, IRPEF can effectively be more advantageous thanks to deductions for dependents (DPR 917/1986 art. 12). Municipal and regional surcharges: 1.73-3.33% (variable by Comune and Region) paid only with IRPEF; cedolare replaces them. Registration tax: cedolare replaces it (2% on annual rent); with IRPEF paid separately. Doesn't account for year-by-year option: cedolare/IRPEF choice made at contract registration and renewable annually.

Common mistakes

  • Confusing market and controlled rent: controlled is available only in high-housing-tension municipalities (CIPE resolution 2003 + updates) with rent ceilings (territorial union agreements).
  • Forgetting renunciation of increases: with cedolare rent cannot be ISTAT-updated for contract duration.
  • Ignoring lost IRPEF deductions: 50% renovations (LdB 2026), mortgage interest, 19% medical expenses don't apply to cedolare income.
  • Confusing short and long-term rentals: rentals <30 days (Airbnb) have specific LdB 2024 rates (21% first, 26% second-fourth).
  • Underestimating municipal/regional surcharges: 1.73-3.33% additional IRPEF paid only without cedolare choice.

Practical applications

  1. Decide between cedolare secca and IRPEF at rental contract registration.
  2. Evaluate annual tax savings comparing 21%/10% rates vs marginal IRPEF 23-43%.
  3. Choose between market rent 4+4 and controlled rent 3+2 considering 10% cedolare.
  4. Plan tourist short-term rentals (Airbnb) aware of 26% rate from second property.
  5. Compare fiscal regime for multi-unit rental portfolios.
  6. Estimate impact of renouncing ISTAT rent adjustments.
  7. Strategically plan tax regime for university student rentals (controlled rent 10% advantageous).

Updated July 2026

Frequently Asked Questions

What is Italian cedolare secca?

Cedolare secca is an Italian substitute tax on residential rental income, introduced by Legislative Decree 23/2011 art. 3 with rates of 21% for market rent (4+4 standard contracts) and 10% for controlled rent (3+2 contracts in high-housing-tension municipalities, L. 80/2014 art. 9). Replaces IRPEF, regional/municipal surcharges, registration tax, stamp duty. Optional regime, chosen at contract registration. Valid only for residential properties rented to individuals, not companies.

When is cedolare secca better than IRPEF?

Cedolare 21% is generally advantageous when landlord's marginal IRPEF rate exceeds 22-23% (example: incomes above €28,000 33% IRPEF bracket, above €50,000 43% bracket). Cedolare 10% (controlled) is almost always advantageous, even at minimum 23% IRPEF rate due to combination of 33.5% controlled rent reduction (L. 431/1998 + costs) + reduced rate. Example: €12,000/year rent 35% IRPEF: cedolare 21% = €2,520 vs IRPEF 95% × 35% = €3,990, savings €1,470/year.

What is canone concordato and where does it apply?

Canone concordato (controlled rent, L. 431/1998 art. 2 paragraph 3) is a 3+2 year residential lease with rent calculated per territorial agreements between property and tenant unions. Available only in high-housing-tension municipalities listed in periodically updated CIPE resolutions (provincial capitals + high housing demand municipalities). Main advantage: 10% cedolare (vs 21% market) and additional deductions for landlord (30% IRPEF reduction) and tenant (deduction up to €991).

Do Airbnb short-term rentals follow different rules?

Yes. Italian Budget Law 2024 (L. 213/2023) modified short-term rentals (duration ≤30 days, definition L. 178/2020 art. 4 paragraph 2): 21% cedolare for first property destined for short-term rental (Airbnb, Booking, similar), 26% from second to fourth property. From fifth property in short-term rental, qualification as business activity kicks in (VAT registration with ordinary or forfettario regime). Obligation of National Identification Code (CIN) for accommodation facilities since 2024.

What do I lose by choosing cedolare secca?

By choosing cedolare secca you renounce: ISTAT rent increases for contract duration (D.Lgs. 23/2011 art. 3 paragraph 11), IRPEF deductions on rental income (e.g., 19% primary home mortgage interest, 19% medical expenses, 50% renovation), maintenance expense deductibility beyond 5% flat already included. Loss of ISTAT increases can be significant: with 3% average annual inflation over 8 years, real rent erodes 21%. Balance against tax savings estimated by the calculator.

How is cedolare secca contract registered?

Cedolare secca choice is exercised at contract registration with Italian Revenue Agency (electronically via Modello RLI or at territorial office). Cedolare option is filled in the model and tax is paid via F24 with specific tax codes (1840 advance, 1842 balance). The choice is valid for contract duration and automatically renews at renewal. It is revocable in subsequent years notifying the change within 30 days of term. The contract must be registered within 30 days of stipulation (DPR 131/1986).

Does cedolare secca apply to offices and shops?

No, cedolare secca applies only to residential properties cadastral category A (excluding A/10 offices) rented to individuals outside business activity, art or profession of landlord. Excluded: offices (A/10), shops (C/1), warehouses (C/2), industrial premises, commercial properties, instrumental properties. For commercial rentals there's a 21% cedolare introduced by L. 145/2018 (Italian Budget Law 2019) for 2019 contracts on category C/1 premises up to 600 sqm, but with restrictive limits and rarely used.

Formula

C = R \times \alpha_c \quad ; \quad I = R \times \alpha_{IRPEF} \quad ; \quad S = I - C

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