A 25% rent deduction sounds generous. Under the current cap, it stops paying at €556 a month
Chega took two IRS ideas to São Bento: raise the tenant rent deduction from 15% to 25% and bring back mortgage-interest relief of up to €1,200 a year. The PS wants to scrap the €2,300 'moderate rent' tier, freeze lease expiries until 2027 and exempt capital gains on second homes up to €300,000. We ran the numbers on what each would change.
Prime Minister Luís Montenegro sat down with PS leader José Luís Carneiro and Chega’s André Ventura at São Bento on Thursday to hear their housing proposals. By the time we published, there was no public account yet of what, if anything, had been agreed. What we do know is what each party brought along, and some of it goes straight into the tax return of anyone paying rent or a mortgage in Portugal.
So before cheering or dismissing any of it, here are the sums.
The rent deduction, and the cap nobody mentions
Tenants can currently knock 15% of the rent they pay off their IRS bill. There’s a ceiling: €900 for 2026 income and €1,000 from 2027, under article 78-E of the IRS code. Lower earners (those in the first tax bracket) can go up to €1,100.
Chega wants to lift the deductible share from 15% to 25%. Ten extra points for everyone, it sounds like. It isn’t.
With a €1,000 cap, 15% already maxes out once rent reaches roughly €556 a month. Anyone paying that or more already gets the full amount and would get exactly the same. At 25%, the cap kicks in from €333.
In practice, by our count:
- Paying €700 a month: no gain, you’re already at the cap.
- Paying €450: the deduction goes from €810 to €1,000, so €190 more a year.
- Paying €300: from €540 to €900, so €360 more a year.
Raise the cap as well and it’s a different conversation. The proposals made public so far don’t mention it.
Mortgage interest
Portugal still lets people deduct mortgage interest, but only on loans signed before the end of 2011: 15% of the interest, up to €296. Buy after that and you deduct nothing.
Chega wants it back for main homes, capped at €1,200 a year, roughly four times today’s ceiling. Ventura insists it has to go into the 2027 State Budget, because a tax cut passed outside the budget runs into the “lei-travão”, the constitutional rule that stops parliament approving mid-year laws that raise spending or cut revenue in the budget already in force.
The PS list
The Socialists published their five priority proposals the day before:
- Scrap the €2,300 “moderate rent” tier, the level up to which a landlord can pay 10% IRS on rental income instead of 28%. The PS says the break costs €200 million and would rather spend it on rents of €600 or €700.
- End uncapped deposits and rent paid in advance, with a public guarantee to balance the risk between landlord and tenant.
- Stop any rental contract from expiring before 31 December 2027.
- Hand homes owned by IHRU (the national housing and urban renewal institute) to town halls, funded through a bank-financed, state-guaranteed fund.
- Exempt from capital gains tax the sale of second homes up to €300,000 in high-pressure areas, where the home becomes someone’s permanent residence.
We’ve already looked at how a landlord chooses between the 10% rate and the new simplified regime, which is exactly the ground the first PS proposal would shift.
What happens next
On Friday it’s the smaller parties’ turn, seen by four ministers: IL at 10am, Livre at 11am, the PCP at noon, then the Left Bloc, PAN and JPP from 3pm. Ventura has also asked for a technical meeting with the Finance Ministry to cost his ideas.
When he called Carneiro and Ventura in, Montenegro said the government’s job was to listen and then decide. The final budget vote is on 24 November. That’s where we’ll find out which of these sums survived.
Image: Koshelyev / Wikimedia Commons (CC BY-SA 3.0)