How this works
IMT is a tax paid once, before the deed, when you buy a property. For housing it is progressive by brackets: you apply the bracket’s marginal rate to the whole base and subtract a fixed deduction. The base is the higher of the price and the VPT. The tables and deductions below are those of the IMT Code in force for 2026, mainland.
- 1
Enter the value
Type the agreed price and the VPT from the property register. The calculator uses the higher of the two as the base, as the law requires.
- 2
Pick the purpose
Main permanent home (Table I), secondary home or rental (Table III), rural property (5%) or other urban property (6.5%).
- 3
Find the bracket
For housing, the base falls into a bracket with a marginal rate and a deduction. The 6% and 7.5% top brackets are flat — no deduction.
- 4
Compute
IMT = base × rate − deduction. The calculator shows the tax and the effective rate (IMT divided by the base).
Frequently asked
Is IMT charged on the price or the VPT?
On the higher of the two. The law compares the deed price with the Taxable Asset Value (VPT) on the property register and applies the rate to the larger figure. That is why this calculator asks for both and always uses the bigger one.
What is the "amount to deduct"?
IMT is banded, but you do not add up band by band. You apply the band’s marginal rate to the whole value and subtract a fixed amount that corrects the lower bands. Formula: IMT = value × rate − deduction. The 2026 deductions come from the IMT Code (Article 17).
Does the rate change for a main home vs a second home?
Yes. A main, permanent home (where you will live) uses Table I, which starts at 0% up to €106,346. Any other home — a second house, a rental, an investment — uses Table III, which taxes from 1% on the first euro and has different deductions.
Is there an IMT exemption for a cheap main home or for young buyers?
Under Table I (main, permanent home) you already pay no IMT up to €106,346. There is also a scheme for buyers up to 35 that exempts a first main home up to €330,539 — this calculator does not apply that youth scheme; check the conditions on the official AT simulator before relying on it.
Does this work for the Azores and Madeira?
No. The Autonomous Regions have their own tables (higher brackets). This tool uses only the Mainland 2026 tables. If you are buying in the islands, use the official AT simulator.
Besides IMT, what else do I pay at purchase?
Stamp Duty on the transfer (0.8% of the value) and, if you take a mortgage, stamp duty on the loan. There are also registration and deed fees. This calculator only estimates IMT.
DISCLAIMER
Estimate based on the official 2026 IMT tables for mainland Portugal (IMT Code, Article 17). It does not cover the Azores and Madeira, nor special schemes such as the exemption for buyers up to 35, urban rehabilitation, acquisition by funds or the 7.5% non-resident flat rate for housing (Article 17(10)). The final amount is set by the Tax Authority. Always confirm on the official AT simulator. Not tax advice.