UIT - Peruvian tax unit

The UIT, Unidad Impositiva Tributaria, is a reference unit set annually by the Peruvian Ministry of Economy (MEF) to determine taxes, penalties, fines, processing fees, deductions, and others. In 2025, 1 UIT is equivalent to S/ 5,350.

For example, the fine for traffic violations isn’t a fixed amount in Soles, but a percentage of an UIT. The fine for drunk driving is 1 UIT (or 100% of an UIT). So, if they catch you in 2025 you might end up paying S/ 5,350, while the same traffic violation would have cost you S/ 5,150 the year before (2024) or only S/ 4,950 in 2023.

Or the fine for overstaying a tourist visa is not a fixed Soles amount but equals 0.1% of an UIT. So, for overstayed days in 2025 you have to pay a fine of S/ 5.35 for each day you overstayed, while in 2024 it was S/ 5.15 for each overstayed day or in 2023 S/ 4.95.

Or Peruvian income tax, which is imposed on a scale of brackets of the income. For the first 5 UITs of your income per year you pay 8% income tax, for the amount above that up to 20 UITs 14%, for the amount above that up to 35 UITs 17%, for the amount above that up to 45 UITs 20% and for the amount above 45 UITs 30%. So, in 2025 you pay 8% tax on the first S/ 26,750 (5 UITs) of your income and then on the income above that up to S/ 107,000 (20 UITs) 14% and so on.