Italian Building Bonuses Calculator 2026: Renovation, Eco, Seismic

Calculate Italian building bonuses 2026: renovation 50%/36%, ecobonus, sismabonus, furniture, barriers 75%. Tax deduction over 10 years and IRPEF capacity.

Calculation parameters
Was this calculator useful?

The Italian building bonuses calculator 2026 determines comprehensive IRPEF tax deduction for main subsidized interventions: renovation 50% primary residence or 36% other dwellings, ecobonus energy efficiency 50%/36%, sismabonus 50%/36%, furniture bonus 50%, architectural barriers bonus 75%. The 2026 rates derive from Italian Budget Law 2026 (L. 199/2025) which reorganized the building deduction system post-Superbonus 110%, simplifying the previous structure with three main rates (50%/36%/75%) and intervention-specific spending caps. Deduction applies to Italian IRPEF per DPR 917/1986 art. 16-bis and D.L. 63/2013 (Ecobonus). Note: this is the Italian-specific tax incentive system; the US uses different mechanisms like Energy Efficient Home Improvement Credit (IRC 25C) and Residential Clean Energy Credit (IRC 25D, expanded by Inflation Reduction Act 2022). For Italian residential property owners, this is the essential tool to plan recovery, energy retrofit or anti-seismic works.

Mathematical formula

The calculation combines cap, rate and distribution:

  • Total deduction: Dtotal = min(Expense, Cap) × Rate%
  • Annual deduction: Dyear = Dtotal / Distribution years (10 standard, 5 for barriers)
  • IRPEF capacity: Deffective = min(Dyear, IRPEF owed)
  • Primary residence rate 2026: 50% (LdB 2026 L. 199/2025)
  • Other dwellings rate 2026: 36% (LdB 2026)
  • Barriers bonus: 75% any property type, 5-year distribution (art. 119-ter D.L. 34/2020)

Main spending caps: renovation €96,000/dwelling unit; ecobonus variable per intervention (€60,000 fixtures, €30,000 boiler, €60,000 solar shading, €60,000 thermal coat); sismabonus €96,000/unit; furniture €5,000; barriers €50,000. Per D.L. 11/2023, invoice discount and credit transfer drastically limited to residual cases (earthquake victims, IACP social housing, NGOs).

History and context of Italian building bonuses

Italian building bonuses originated with L. 449/1997 art. 1 par. 5 (Prodi government), originally 36% on expenses up to €48,000. L. 99/2009 introduced first Ecobonus at 55%. D.L. 63/2013 temporarily raised to 50% renovation and 65% Ecobonus. D.L. 34/2020 "Decreto Rilancio" introduced famous Superbonus 110% during pandemic, progressively reduced: 90% (2023), 70% (2024), 65% (2025), eliminated 2026. Italian Budget Law 2026 (L. 199/2025) reorganized system: 50% primary, 36% others, confirmed for 2026-2028. D.L. 11/2023 nearly eliminated invoice discount and credit transfer (massive impact on Poste Italiane, Banca Sella, other buyers). References: Italian Revenue Agency Building Deductions Guide 2024, ENEA energy efficiency portal, MEF circulars 2024.

Italian building bonuses table 2026

BonusPrimary residence rateOther dwelling rateSpending capDistribution years
Building renovation50%36%€96,000/unit10 years
Ecobonus energy efficiency50%36%€30,000-60,000 per intervention10 years
Sismabonus zones 1-2-350%36%€96,000/unit10 years
Furniture bonus (post-renovation)50%50%€5,00010 years
Architectural barriers bonus75%75%€50,0005 years

Sources: Italian Budget Law 2026 (L. 199/2025), Italian Revenue Agency Building Deductions Guide 2026, art. 119-ter D.L. 34/2020 (barriers), D.L. 63/2013 (Ecobonus), DPR 917/1986 art. 16-bis (renovation).

Five worked examples

Example 1 — Primary residence renovation €50,000. Rate 50%. Total deduction €25,000. Annual €2,500/year × 10 years. Net tax savings if owner's annual IRPEF > €2,500.

Example 2 — Ecobonus thermal coat other house €40,000. Rate 36% (other dwelling LdB 2026). Total deduction €14,400. Annual €1,440/year × 10 years. APE certification pre/post + ENEA notification within 90 days from work completion mandatory.

Example 3 — Architectural barriers bonus €30,000. Rate 75% (any property type, art. 119-ter DL 34/2020). Total deduction €22,500. Annual €4,500/year × 5 years (faster distribution). Works for accessibility: elevators, ramps, sanitary aids.

Example 4 — Primary residence sismabonus zone 1 €100,000. Expense exceeds €96,000 cap. Deduction on €96,000 × 50% = €48,000. Annual €4,800/year × 10 years. Structural certification + seismic class mandatory.

Example 5 — Furniture bonus post-renovation €4,500. Kitchen + living + bedroom purchase. Rate 50%. Total deduction €2,250. Annual €225/year × 10 years. Constraint: furniture purchase date after renovation start, new products for renovated property.

Model limitations

The calculation has simplifications: IRPEF capacity: deduction valid only up to annual IRPEF owed; excess unrecoverable and not carried forward. For low incomes (minimum pension €7,844/year) or no tax owed, deductions can be fiscally irrelevant. Invoice discount and credit transfer severely limited by D.L. 11/2023: only residual cases admitted. Technical certifications mandatory for ecobonus (APE pre/post) and sismabonus (seismic class). ENEA notification within 90 days work completion for ecobonus. Traceable bank transfer mandatory (DPR 917/1986 art. 16-bis par. 1-quater) with specific causal, fiscal code beneficiary, executor VAT, subsidy norm. Doesn't account for combinations with other deductions and reduced 10% VAT (DPR 633/1972 Annex A part III n. 127-quaterdecies).

Common mistakes

  • Confusing primary and other house rates: 50% only primary LdB 2026, 36% others (was 36%/30% pre-2026).
  • Exceeding €96,000 cap: excess expenses non-deductible.
  • Forgetting traceable bank transfer: alternative payment methods void deduction (DPR 917/1986 art. 16-bis par. 1-quater).
  • Neglecting ENEA notification: for ecobonus, 90-day deadline from work completion, omission causes benefit loss.
  • Underestimating IRPEF capacity: without owed tax, deduction lost; consider co-ownership with higher-IRPEF family member.

Practical applications

  1. Plan primary or secondary residence renovation estimating fiscal savings.
  2. Evaluate ecobonus for thermal coat, fixtures, boiler, photovoltaic fiscal-wise.
  3. Decide whether to undertake sismabonus structural retrofit work.
  4. Combine renovation with 50% furniture bonus for fiscally optimized interior design.
  5. Calculate impact of 75% barriers bonus for disability accessibility.
  6. Compare fiscal advantage primary vs other property under LdB 2026 rates.
  7. Plan co-ownership with higher-IRPEF family member to recover full capacity.

Updated July 2026

Frequently Asked Questions

What are the Italian building bonuses 2026?

Italian Budget Law 2026 (L. 199/2025) confirmed for 2026-2028 five main building bonuses: renovation 50% primary / 36% others (DPR 917/1986 art. 16-bis); ecobonus energy efficiency 50% / 36% (D.L. 63/2013); sismabonus zones 1-2-3 50% / 36%; furniture bonus 50% for post-renovation purchase (max €5,000); architectural barriers bonus 75% (max €50,000, 5-year distribution, art. 119-ter D.L. 34/2020). The Superbonus 110% was eliminated end-2025.

What is the Italian traceable bank transfer?

The Italian traceable bank transfer (DPR 917/1986 art. 16-bis par. 1-quater) is the mandatory payment method to enjoy building deductions. Standard causal: 'Transfer for [type] works - art. 16-bis DPR 917/86 - property at [address]'. Indicate: deduction beneficiary fiscal code, executor VAT or fiscal code, subsidy norm, works amount. Italian banks withhold 11% as IRPEF/IRES advance (DL 78/2010). Payments with alternative methods (card, cash, standard transfer) void the benefit.

What changed from Superbonus 110%?

The Superbonus 110% from D.L. 34/2020 was progressively reduced: 90% (2023), 70% (2024), 65% (2025), eliminated end-2025. The Italian Budget Law 2026 (L. 199/2025) replaces system with differentiated deductions: 50% primary residence, 36% other dwellings for renovation, ecobonus, sismabonus. Invoice discount and credit transfer severely limited by D.L. 11/2023 art. 1 par. 5: admitted only for earthquake victims, IACP social housing, NGOs, residual specific situations. Tax compensation via tax declaration remains primary recovery instrument.

What is the architectural barriers bonus 75%?

The architectural barriers bonus (art. 119-ter D.L. 34/2020) is a 75% IRPEF deduction for interventions to overcome/eliminate architectural barriers in existing properties, up to €50,000 expense. Typical eligible works: elevators, stair lifts, disability ramps, door widening, bathtub-to-accessible-shower replacement, gate automation, devices for visually impaired. 5-year distribution (faster than 10 standard). Bonus confirmed until December 31, 2027 by LdB 2024. Very advantageous: 75% × €50,000 = €37,500 total deduction.

What if my IRPEF is lower than the deduction?

Deduction is limited to annual IRPEF capacity. If annual deduction installment (e.g., €2,500) exceeds IRPEF owed (e.g., €1,800), difference (€700) is lost, not carried to subsequent years. For low incomes (minimum pensioners €603.40/month, employees below €8,500 no-tax area) deductions may be fiscally irrelevant. Solutions: co-ownership of works with higher-IRPEF family member, credit transfer to bank/company in residual cases D.L. 11/2023 (earthquake victims, IACP, NGOs). Verify average IRPEF capacity over last 3 years.

What documents to keep for the deduction?

Italian Revenue Agency requires 10-year retention of: company invoices with intervention details, traceable transfers with correct causal, certified technician's affidavit (APE for ecobonus, seismic class for sismabonus), building permit/CILA/SCIA filed with municipality, ENEA notification within 90 days (for ecobonus), updated cadastral certificate, residence declaration if primary, condominium quotas if applicable. Keep digital and paper copies. For previous superbonus, also conformity visa and price congruity attestation.

Can I combine multiple Italian building bonuses?

Italian building bonuses are generally alternative: cannot stack two subsidies on same intervention. Example: thermal coat qualifies for ecobonus 50% primary, but doesn't add to sismabonus if intervention only thermal. Different interventions can combine: 50% kitchen renovation + 50% ecobonus coat + 50% furniture bonus + 75% barriers elevator, each within own cap. Overlap with reduced 10% VAT (DPR 633/1972 Annex A part III n. 127-quaterdecies) for renovation is allowed. Verify with accountant or qualified technician before starting works.

Formula

D_{annua} = \frac{\min(C, T_{max}) \times \alpha}{n}

Comments (0)

No comments yet. Be the first!