Family Tax Deductions Calculator Italy 2026

Detrazioni per familiari a carico (dependent family member deductions) are reductions of IRPEF (Imposta sul Reddito delle Persone Fisiche — Italy's personal income tax) established by Article 12 of the TUIR (Testo Unico delle Imposte sui Redditi, D.P.R. 917/1986) for taxpayers who support economically dependent family members. These deductions reduce the tax itself (not the taxable income), which means they translate into a concrete increase in your monthly take-home pay (busta paga) if you are an employee. For expats living and working in Italy, understanding these deductions is essential to maximise your net salary, especially if your spouse does not work or earns a very low income.

Who qualifies as a dependent family member (familiare a carico)?

A family member is considered fiscally dependent (fiscalmente a carico) when their gross annual income does not exceed €2,840.51, before any deductible expenses. For children aged 24 or younger, the income threshold is raised to €4,000. This higher limit for younger dependents recognises that many children between 21 and 24 may earn small amounts from part-time jobs, internships, or freelance work without causing the family to lose the right to deductions.

The following family members can be claimed as dependents: the spouse (coniuge — not legally and effectively separated), children (figli — including natural, recognised, adopted, fostered, or affiliated children), and other relatives (altri familiari — parents, sons- and daughters-in-law, parents-in-law, brothers and sisters) provided they live with the taxpayer or receive alimony not resulting from court orders. Our calculator focuses on the two main deductions: the spouse deduction and the deduction for children aged 21 and older.

Important for expats: If you are tax-resident in Italy (you spend more than 183 days per year in the country, have your domicile or habitual abode registered here, or are enrolled in the anagrafe of an Italian municipality), you are subject to IRPEF on your worldwide income and are entitled to claim family deductions just like any Italian citizen. Your dependent spouse does not need to be Italian or resident in Italy, but you must be able to document their income level if requested by the Agenzia delle Entrate.

Spouse deduction (detrazione per il coniuge a carico)

The deduction for a dependent spouse is calculated using a tiered formula system that varies based on the taxpayer's gross income (not the spouse's income). The mechanism is designed to provide a higher deduction for lower incomes, with a progressive reduction as income increases, until it reaches zero for incomes above €80,000.

Income up to €15,000: The deduction is calculated using the formula 800 − 110 × (income / 15,000), with a guaranteed minimum of €690. This means that even at very low income levels, the deduction never falls below €690 per year. For example, at an income of €10,000, the formula yields 800 − 110 × (10,000 / 15,000) = 800 − 73.33 = €726.67.

Income between €15,001 and €40,000: A system of fixed amounts per sub-bracket applies, with a characteristic "hump" in the central brackets that rewards middle-low incomes. The amounts range between €690 and €720 depending on the specific sub-bracket:

Income between €40,001 and €80,000: The deduction decreases linearly using the formula 690 × (80,000 − income) / 40,000. At an income of €60,000, the deduction would be 690 × (80,000 − 60,000) / 40,000 = 690 × 0.5 = €345.

Income above €80,000: The deduction is zero. No spouse deduction applies at all for high earners above this threshold.

Deduction for dependent children aged 21 and older (detrazione per figli a carico di 21 anni o più)

Since 1 March 2022, with the introduction of the Assegno Unico Universale (AUU) — the Universal Child Allowance paid by INPS — the traditional IRPEF deductions for dependent children apply exclusively to children who have turned 21. For children under 18 and those aged 18 to 20, financial support is provided entirely through the Assegno Unico, which is a direct monthly cash transfer based on the household's ISEE indicator (Indicatore della Situazione Economica Equivalente).

For children aged 21 and older who are fiscally dependent (annual income ≤ €2,840.51, or ≤ €4,000 if under 24), the IRPEF deduction is calculated with the following formula:

The formula produces a deduction that decreases linearly: at an income of €0, the deduction is €950 per child; at an income of €47,500, it is €475; and it reaches zero when income hits €95,000. When there are multiple dependent children, the reference income threshold (€95,000) increases by €15,000 for each child after the first, making the deduction more generous for larger families. For instance, with two dependent children over 21, the reference threshold becomes €110,000, and with three it becomes €125,000.

The child deduction is normally split 50/50 between the two parents. However, it is possible to assign 100% of the deduction to the higher-earning parent if both parents agree and doing so allows the household to fully utilise the deduction — for example, when the lower-earning parent does not have enough IRPEF liability (capienza fiscale) to absorb their share.

The Assegno Unico Universale for children under 21

The Assegno Unico Universale (AUU), introduced by Legislative Decree 230/2021 and operational since March 2022, is the welfare measure that replaced the previous IRPEF deductions for minor children, the family allowances (ANF — Assegni al Nucleo Familiare), the baby bonus (bonus bebe'), and the birth premium. The AUU is a monthly cash transfer paid by INPS directly into the beneficiary's bank account, from the seventh month of pregnancy until the child turns 21 (with reduced amounts for children aged 18 to 20).

The AUU amount varies based on the household's ISEE: for ISEE up to €17,090.61, the maximum amount per minor child is approximately €199.40 per month; for ISEE above €45,574.96 (or if no ISEE is submitted), the minimum is approximately €57 per month per child. Additional top-ups are available for large families (3 or more children), children with disabilities, mothers under 21, and households where both parents are employed. The application must be submitted to INPS (online, through a patronato, or via the contact centre), and the allowance is paid monthly. Expats who are tax-resident in Italy are eligible for the AUU, provided they meet the residency and ISEE requirements.

Worked example: €35,000 income with spouse and one 22-year-old child

Let us consider an employee with a RAL (Retribuzione Annua Lorda, gross annual salary) of €35,000, a dependent spouse (spouse's income below €2,840.51), and one 22-year-old dependent child claimed at 50%. We will calculate the deductions step by step.

Taxable income (imponibile fiscale): The RAL of €35,000, after deducting the INPS social security contribution (9.19% = €3,216.50), produces a taxable income of approximately €31,783.50.

Spouse deduction (detrazione coniuge): With an income of €31,783.50, we fall within the €29,201 – €34,700 bracket, which provides a fixed amount of €710.

Child deduction at 50% (detrazione figlio 22 anni al 50%): The formula is 950 × (95,000 − 31,783.50) / 95,000 = 950 × 0.6654 = €632.17. At 50%, the deduction is 632.17 × 50% = €316.09.

Total family deductions: 710 + 316.09 = €1,026.09 per year. Divided across 13 pay periods (monthly salary plus tredicesima), this amounts to approximately €78.93 more per month in your pay packet compared to a taxpayer with no dependent family members.

Summary table: deductions by income level

The table below shows the annual deductions for a dependent spouse and one dependent child aged 21+ claimed at 50%, at different taxable income levels. Values are calculated using the formulas from Article 12 of the TUIR.

The table highlights how family deductions are most significant for low-to-middle incomes: a taxpayer earning €25,000 receives approximately €1,040 per year in deductions (€80 per month), while a taxpayer earning €70,000 receives only €297 per year (€23 per month). Above €80,000 in income, the spouse deduction disappears entirely, and only a residual child deduction remains until €95,000.

How to notify your employer about dependent family members

To receive the deductions in your monthly pay, you must inform your employer (or the HR/payroll department) about your dependent family members by filling in a specific declaration form (modulo di richiesta detrazioni). This notification must be made when you start a new job and whenever changes occur — birth of a child, change in your spouse's income, a child turning 21, and so on. The employer, acting as your tax withholding agent (sostituto d'imposta), applies the deductions monthly in your pay slip by dividing the annual amount by the number of pay periods (usually 12, with a year-end adjustment in the conguaglio). It is your responsibility to report changes promptly: if a dependent exceeds the income threshold during the year, the deduction is no longer due, and any amount already received will be clawed back during the year-end adjustment or in your annual tax return (dichiarazione dei redditi).

Tip for expats: When you start employment in Italy, your employer will typically provide the "modulo detrazioni" form. If your spouse remains abroad and does not work (or earns below the threshold in Italy), make sure to declare them as a dependent. You may need to provide their Italian codice fiscale (tax identification number), which non-residents can obtain at the Italian consulate in their home country or at the local Agenzia delle Entrate office.

Tax capacity (capienza fiscale): when you cannot use the full deduction

A key concept to understand is capienza fiscale (tax capacity). Deductions can reduce your IRPEF liability down to zero, but they cannot generate a tax credit — if your gross IRPEF is less than the total deductions you are entitled to, the excess portion is lost. This is particularly relevant for low incomes, where the combination of the employment income deduction (detrazione per lavoro dipendente), the 2026 tax wedge benefit (cuneo fiscale), and family deductions could exceed the gross IRPEF due. In these situations, assigning 100% of the child deduction to the higher-earning parent can be the optimal strategy for the household, because that parent will have sufficient tax capacity to absorb the full deduction amount.

The main parameters governing family deductions for the 2026 tax year, as defined by the TUIR and confirmed by the 2026 Budget Law (Legge di Bilancio 2026):

Note for civil unions: Since the entry into force of Italy's Civil Union Act (Legge Cirinna', Law 76/2016), partners in a civil union (unione civile) are treated identically to married spouses for all tax purposes, including family deductions. The same income thresholds and deduction formulas apply. Cohabiting partners (conviventi di fatto) who are not in a civil union or marriage, however, do not qualify for the spouse deduction.