The Tax on Real Estate Capital Gains is calculated on the profit of the sale and some expenses can be deducted, such as certain taxes paid, commissions to real estate agents and also expenses with the valuation of the property. The value also varies depending on whether or not you are a resident in Portugal.
This tax is paid through your personal income tax return.

The IMT - Municipal Property Transfer Tax (Imposto Municipal sobre as Transmissões Onerosas de Imóveis) is paid in a single instalment and is calculated based on the value stated in the deed or on the Tributary Patrimonial Value (VPT) of the property (depending on the higher of these two values).
The IMT rate applied varies according to the property's price, location and the intended purpose. For example, in the case of an urban property destined exclusively for residential and permanent use, rates may range from 0% to 8%.
IMT tax must be paid before the official sale of the property, because during the signing of the deed the notary will require proof of payment.

Together with the IMT tax, you will have to pay Stamp Duty, the rate of which is around 0.8% of the amount determined in the deed.

According to the IMI rules, anyone who owns a property or land on the 31st of December of each year has to pay IMI tax the following year.
IMI tax is paid on the following dates:

• In a single instalment, in May, if the amount is less than 100 euros;
• In two instalments, in May and November, if the amount is between 101 and 500 euros;
• And in three instalments, in May, August and November, if the amount to be paid is more than EUR 500.

To calculate the value of IMI, you have to multiply the IMI rate applicable by the Taxable Asset Value (VPT - Valor Patrimonial Tributario) of your property.
The IMI rate is set annually by the Municipality where your property is located. In urban buildings, the rates vary between 0.3% and 0.45%, and in rustic buildings the rate is 0.8%.
The VPT is determined by the AT - Autoridade Tributária e Aduaneira (Portuguese Tax and Customs Authority) and is based on factors such as the age of the property or construction price per square metre.
Some municipalities may grant families an IMI tax cut, depending on the number of dependents in each household. The so-called 'IMI Familiar’ is a tax benefit decided by each Municipality annually and applied automatically by the AT.

The IMI tax exemptions granted under Portuguese law include:

• Families with a gross annual income under €15,295 or with properties evaluated under €66,500 are exempt from paying IMI.
• Permanent homeowners may be exempt from IMI for three years if the property value is equal to or less than €125,000 and the annual taxable income of the family under €153,300.
• Other exemptions include political parties, non-profit organisations, among other very specific situations that are defined in Portuguese tax legislation.

The Additional Municipal Property Tax (AIMI) is a tax that complements the Municipal Property Tax (IMI).
It is calculated on the asset value of the property and only applies to asset values above 600,000 Euros. The rate is between 0.7 and 1.5%.
This tax is paid by anyone who owns properties on January 1st of each year.