Sismabonus: the deduction for seismic safety

What is the Sismabonus?

The Sismabonus is the tax deduction that encourages seismic safety in Italy. The works of improvement and seismic adaptation, in fact, can be deducted from IRPEF (Tax on the Income of Individuals) or IRES (Tax on Company Income). As expected from law decree n.63 / 2013Depending on the result obtained with the execution of the works, the seismic area in which the property is located and the type of building, different tax deductions are granted.


What is the deductible percentage thanks to the Sismabonus?

Thanks to the seismic safety measures, it is possible to take advantage of the tax deductions provided for by the Sismabonus. In detail, it is up to the tax deduction of 50% to each real estate unit up to a total amount of expenses of 96.000 euros. If a reduction of seismic risk and the passage to alower risk class, the deduction from the tax due is 70% of the expenditure incurred; if, on the other hand, the passage is of two lower risk classes, the deduction is equal to 80%.
In the case of interventions on the common parts of apartment buildings leading to a reduction of seismic risk that determines: the passage to alower risk class, the deduction from the tax is due to the extent of 75% the expenditure incurred; if the passage is even to two lower risk classes, the deduction is due to the extent of85%.


In which seismic areas is the Sismabonus applicable?

The Sismabonus is applicable to properties located in Italy in seismic zones 1, 2 and 3.


Relaunch Decree: Sismabonus 110%.

With the Relaunch Decree (Decree Law 19/05/2020 n.34) the deduction foreseen for expenses incurred in seismic zone 110 and 1 rises to 2% for:

  • works of seismic safety of the structural parts of the buildings (currently subsidized with the ordinary Sismabonus at 50%);
  • jobs that determine the transition to a lower risk class (currently subsidized at 70% on single houses and 75% in condominiums);
  • jobs that determine the transition to two lower risk classes (currently subsidized at 80% on single houses and 85% in condominiums).

Furthermore, also for the expenses incurred between 1 July 2020 and 31 December 2021, for the purchase of anti-seismic buildings built through demolition and reconstruction (i.e. the Sismabonus purchases) in seismic zone 1, 2 and 3, the rate of deduction rises to 110%.

The Sismabonus 110% applies to interventions carried out in a condos and singles housing units used both in first houses both second homes.

As an alternative to the tax deduction, the taxpayer can take advantage of the discount on invoice by the supplier, who can retrieve it in the form of tax credit transferable to other subjects, including banks and financial intermediaries.

What is the procedure for calculating the tax deduction?

To calculate the tax deduction introduced by the Sismabonus it is necessary calculate the seismic classification before and after the seismic safety measures. Following the improvement obtained, through the calculation of the PAM, the percentage deductible thanks to the incentive is then determined.


How many years will the Sismabonus tax deduction be distributed?

The tax deduction introduced with the Sismabonus is distributed, starting from the year in which the expenditure was incurred, in 5 annual installments of the same amount.


The Sismabonus will remain in force until 2024

The Sismabonus is the tax deduction that encourages seismic improvement works on existing buildings. Based on the text of theart. 119 of Legislative Decree 34/2020, as amended byart. 1 of Legislative Decree 59/2021, paragraph 3, the following emerges: "The deduction referred to inarticle 14 of the decree-law 4 June 2013, n. 63, converted, with modifications, by law 3 August 2013, n. 90, is applied to the extent of 110 per cent for documented expenses that remain the responsibility of the taxpayer and will remain in force until 31/12/2024.

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