In-depth
What Is TARI and How to Calculate It in 2026
TARI (Tassa sui Rifiuti — Waste Tax) is the municipal tax designed to fund the costs of urban waste collection and disposal services. Introduced by the 2014 Stability Law (L. 147/2013), it replaced the previous TARES tax and is owed by anyone who owns or occupies, under any title, premises or open areas likely to produce waste.
Who Must Pay TARI
The TARI taxpayer is the person who owns or occupies the premises or open area. In the case of a rental, the tenant is liable for payment if the occupancy lasts more than six months in the calendar year. For shared condominium areas (stairways, lobbies, courtyards), the tax is owed by the condominium, represented by the building administrator.
Properties are divided into two categories:
- Domestic properties: homes and related annexes (garages, basements)
- Non-domestic properties: commercial businesses, offices, professional practices, shops, restaurants
How TARI Is Calculated: The Formula
TARI consists of two fundamental components:
TARI = Fixed Rate + Variable Rate + TEFA
| Component | Calculation | What It Covers |
|---|---|---|
| Fixed Rate | Area (m²) × Fixed rate per m² | Fixed service costs (staff, vehicles, investments) |
| Variable Rate | Fixed amount based on number of occupants | Variable costs (collection, transport, disposal) |
| TEFA | 5% of the sum of fixed and variable rates | Provincial environmental tax |
Practical Calculation Example
Consider an apartment of 80 m² occupied by 3 people in a municipality with the following rates:
- Fixed rate: €1.20/m²
- Variable rate for 3 occupants: €148.00
The calculation would be:
- Fixed rate: 80 × 1.20 = €96.00
- Variable rate: €148.00
- Subtotal: 96.00 + 148.00 = €244.00
- TEFA (5%): 244.00 × 0.05 = €12.20
- Total TARI: €256.20
Payment Deadlines 2026
Deadlines are set by each municipality, but payment is generally divided into 2, 3, or 4 installments. The most common schedule is:
| Installment | Approximate Deadline |
|---|---|
| 1st installment (or advance) | April – May 2026 |
| 2nd installment | July 2026 |
| 3rd installment (or balance) | October – November 2026 |
It is always possible to pay in a single lump sum by the first installment deadline.
Exemptions and Reductions
The regulations provide for several cases of TARI reduction or exemption:
- Single-occupant dwelling: 30% reduction on the variable rate
- Seasonal or occasional use: reduction of up to 30%
- Home composting: variable reduction (up to 20–30%) decided by the municipality
- Unusable premises: full exemption for properties without active utilities and unfurnished
- Special waste sent for recovery: proportional reduction for non-domestic properties
- Low ISEE (income indicator): many municipalities provide benefits for families in financial difficulty
TEFA: The Provincial Tax
TEFA (Tax for the Exercise of Environmental Protection and Hygiene Functions) is a surcharge equal to 5% of the TARI amount. It is collected by the municipality together with TARI and then transferred to the relevant Province or Metropolitan City. Exemption from TEFA is not possible.
How to Use the Calculator
Enter the property area in square meters, the number of occupants, and the municipal rates (available on your municipality's website or in the previous year's payment notice). The calculator will return the total amount including TEFA and the breakdown by installments.
