2-3 minutes
Reinvestment of capital gains: new opportunities and an important warning from the Tax Authority
Reinvesting the proceeds from the sale of a property may allow the resulting capital gain to be excluded, in whole or in part, from personal income tax (IRS).
The best-known regime allows this exclusion when a primary residence (HPP) is sold and the sale proceeds are reinvested in a new primary residence.
There is also the possibility of reinvesting in the purchase of properties intended for residential rental with a monthly rent of up to €2,300.
Two binding rulings from the Tax Authority now help clarify the limits and possibilities of these regimes.
In summary
The Tax Authority has adopted two particularly relevant positions.
On one hand, it considers that using a primary residence for a professional activity — even partially — may prevent the reinvestment regime from applying. In the Tax Authority’s view, the property sold must be exclusively used as a primary residence.
On the other hand, it has expressly confirmed that it is possible to combine the two reinvestment regimes: part of the sale proceeds can be applied to a new primary residence, and another part to the purchase of one or more properties intended for residential rental at a monthly rent of up to €2,300.
This second possibility allows, for example, a taxpayer to sell their residence, acquire a new primary residence, and use the remaining amount to purchase rental properties, benefiting from the tax exclusion on the capital gain in proportion to the amount actually reinvested.
How does reinvestment in a primary residence work?
When a primary residence is sold, the resulting capital gain may be wholly or partially excluded from taxation if the sale proceeds are reinvested in a new primary residence.
It’s important to clarify that it is not simply the capital gain that must be reinvested. The calculation is generally based on the sale price, less any outstanding loan balance related to the property sold.
Among the main requirements are:
- the property sold must have been the taxpayer’s or their household’s primary residence;
- that use must be properly reflected in the tax domicile for the legally required period;
- the reinvestment must be made within the applicable deadlines;
- the new property must also be intended as a primary residence;
- the intention to reinvest must be properly declared in the IRS return.
The new primary residence does not necessarily have to be located in Portugal. Reinvestment may be made in a property located in Portugal, in another EU Member State, or in the European Economic Area, provided that, in the latter case, there is an exchange of tax information.
When the reinvestment is only partial, the tax exclusion is also proportional to the amount actually reinvested.
Beware of professional use of a primary residence
Binding Ruling No. 30465 introduces an important warning.
The case analyzed involved a taxpayer who lived in a property and kept their tax domicile there, but also used part of the unit for their professional activity.
The Tax Authority found that this partial professional use prevented the property from being exclusively used as a primary residence.
As a result, it held that the taxpayer could not benefit from the capital gains tax exclusion through reinvestment in a new primary residence.
This position is particularly relevant for self-employed professionals, business owners, and others who use part of their home for their actual work activity.
Careful attention should therefore be paid to how the property is actually used before the sale — simply having a tax domicile there will not necessarily be sufficient under all circumstances.
New possibility: reinvesting in rental properties too
The regime currently in force also allows the proceeds from the sale of residential properties to be reinvested in the purchase of other properties intended for residential rental.
In this case, unlike reinvestment in a new primary residence, the properties acquired must be located in Portugal.
The monthly rent may not exceed €2,300.
Among the main conditions are:
- purchase of a property located in Portugal;
- the reinvestment must be made within the legally required deadlines;
- the rental agreement must be signed within the applicable deadline;
- monthly rent not exceeding €2,300;
- the property must remain rented for the required minimum period;
- the property must not be sold during the legally established period.
Can the two regimes be combined?
Yes.
Binding Ruling No. 30696 expressly confirmed that the proceeds from the sale of a primary residence can be split between:
- the purchase of a new primary residence;
- the purchase of one or more properties intended for residential rental at a monthly rent of up to €2,300.
The Tax Authority concluded there is no obstacle to using both options together.
Each portion of the reinvestment must, naturally, meet the conditions specific to its respective regime.
A practical example
Consider the sale of a primary residence for €1,000,000, with no outstanding loan.
The owner could, for example:
- purchase a new primary residence for €350,000;
- purchase a property in Portugal for €325,000 for residential rental;
- purchase a second property in Portugal for €325,000 for the same purpose.
In this example, the full sale proceeds were reinvested.
If all applicable requirements for the new primary residence and the rental properties are met, the capital gain could be fully excluded from taxation.
The taxpayer is thus able to replace their residence while simultaneously converting part of the sale proceeds into income-generating real estate assets, without losing the reinvestment benefit as a result.
If only part of the sale proceeds is reinvested, the exclusion will be proportional to the amount actually reinvested.
Why is this particularly relevant in the Algarve?
For property owners and real estate investors in the Algarve, this possibility may be of particular interest when the sale of a primary residence is accompanied by an intention to keep part of the capital invested in the real estate market.
Rather than limiting reinvestment to the purchase of a new home, it may be possible to combine that purchase with properties intended for residential rental at a monthly rent of up to €2,300, provided the conditions applicable to each investment are met.
At the same time, anyone who uses part of their residence for a professional activity should pay special attention to the position taken by the Tax Authority in Binding Ruling No. 30465 before proceeding with a sale.
Frequently Asked Questions
Can I sell my primary residence and buy more than one property?
Yes. The sale proceeds can be split between a new primary residence and one or more properties intended for residential rental, provided the conditions applicable to each option are met.
Does the new primary residence have to be located in Portugal?
No. The new primary residence can be located in Portugal, in another EU Member State, or in the European Economic Area, provided that, in the latter case, there is an exchange of tax information.
And where do the properties purchased for rental need to be located?
The rule here is different. Properties purchased to benefit from the rental reinvestment regime must be located in Portugal.
So while the new primary residence can also be located in another EU Member State or the European Economic Area, reinvestment in rental properties is limited to properties located within national territory.
Can the rent charged on properties purchased for rental be any amount?
No. To benefit from this regime, the monthly rent may not exceed €2,300.
Does working from home always prevent reinvestment?
In Binding Ruling No. 30465, the Tax Authority holds that the actual use of part of a property for a professional activity may rule out its exclusive use as a primary residence and, as a result, prevent the benefit.
The specific situation should, however, be assessed before the sale, taking into account the property’s actual use.
How we can help
URB Law Services provides legal and tax support in planning real estate transactions and in the taxation of capital gains, namely in:
- preliminary analysis of the reinvestment regime’s requirements;
- determining the amount that should be reinvested;
- assessing the possibility of combining reinvestment in a primary residence with reinvestment in rental properties;
- analyzing the use of the property sold and the risks arising from professional or business use;
- structuring the deadlines and purchases to be made;
- analyzing IRS reporting obligations;
- filing requests for binding rulings and responding to Tax Authority assessments.
With an office in Almancil, in the Algarve, and representation in Lisbon, URB Law Services handles real estate transactions and tax matters throughout the country.
The reinvestment regime can allow for a very significant reduction, or even full exclusion, of capital gains taxation. However, how the properties are used, the deadlines, the amounts reinvested, and the intended use of the new properties are all decisive factors in benefiting from the regime.
Contact us to learn more.
14th of August, 2026
