1
Confirm the stated purchase price
This is the amount shown in the deed or contract and the figure many buyers initially treat as the reference point.
Taxable base on acquisition
Which value matters for IMT and Stamp Duty in Portugal?
Before completion, one of the most common questions is whether the tax calculation should follow the purchase price stated in the deed or the property’s taxable patrimonial value (VPT). This distinction matters because it can change the final amount due.
As a general rule, the higher of the two values is the one that matters. That is why an estimate based only on the negotiated price may not match the formal tax settlement. On acquisition, Stamp Duty generally follows the same base and applies at a fixed rate of 0.8%.
2
Check the VPT
The VPT normally appears on the Portuguese property tax record and may be higher or lower than the agreed purchase price.
3
Compare both values
Under the general rule, the higher of the purchase price and the VPT is the relevant value.
4
Apply the correct table
Once the taxable base is identified, the property still needs to be placed in the right table and regime.
What is the VPT?
The taxable patrimonial value (VPT) is the fiscal value attributed to the property for tax purposes in Portugal. It is relevant for IMI and can also affect the tax calculation on acquisition when compared with the contract value.
When does the VPT change the result?
When the VPT is higher than the purchase price, the taxable base can increase. In those cases, IMT and, as a rule, Stamp Duty may be calculated on that higher amount.
What should not be confused
The taxable base is one thing; the applicable tax rate is another. After comparing the purchase price with the VPT, it still matters whether the property is a main home, a second home, eligible for the youth regime, and whether it is in mainland Portugal or the autonomous regions.
1
Example where the purchase price counts
If a property is bought for 250,000 EUR and the VPT is 230,000 EUR, the higher value generally prevails: 250,000 EUR.
2
Example where the VPT counts
If a property is bought for 250,000 EUR but the VPT is 270,000 EUR, the relevant taxable base may become 270,000 EUR.
3
Why this changes the tax bill
A higher taxable base can increase IMT and also raise the Stamp Duty due on acquisition, which is charged at 0.8% on the relevant base.
Base rule used on this site
When checking a case, the default starting point should be the higher of the contract value and the VPT. That approach avoids overly optimistic readings where the VPT exceeds the agreed purchase price.
Progressive IMT and special regimes
Once the taxable base is identified, the next step is to determine the correct table. In 2026, the tables differ depending on whether the property is a main home, a non-main home, falls under the youth regime up to 35, or is located in the autonomous regions.
When it is worth reviewing the case
If there are different ownership shares, doubts about main-home status, youth relief, resale, rehabilitation or other special circumstances, it is prudent to review the case before completion.
Before completion
If the difference between the purchase price and the VPT is material, it is worth checking the tax treatment before the formal settlement.
The issue is not always the tax table itself. Often it starts with the taxable base that will be used for the transaction. Clarifying that point early helps avoid surprises at the final stage of the purchase.
- Simple comparison
The contract price and the VPT should be reviewed together, not in isolation. - Impact on two taxes
The relevant base can affect both IMT and acquisition Stamp Duty. - Better preparation
It helps you reach completion with a more realistic view of the tax cost.
Frequently asked questions
Is IMT calculated on the purchase price or on the VPT?
As a general rule, the higher of the value declared in the deed or contract and the property’s VPT is the relevant one.
Does Stamp Duty use the same base?
On acquisition, Stamp Duty is generally calculated on the same relevant base used for IMT and applies at a fixed rate of 0.8%.
Where can I find the VPT?
Usually on the Portuguese property tax record (caderneta predial), which is one of the documents worth checking before completion.
If my VPT is higher than the purchase price, can I pay more tax?
Yes. If the VPT is the higher value, it may become the taxable base for both IMT and acquisition Stamp Duty.
Does a quick online estimate settle this issue on its own?
An online estimate is a useful starting point, but when the issue is purchase price versus VPT, both values should be compared expressly before treating the estimate as final.