Affordable rent · RSAA
Affordable rent in Cascais: RSAA rent ceilings
Under the RSAA, the monthly rent in Cascais cannot exceed €752 for a T0, €964 for a T1, €1,254 for a T2 or €1,544 for a T3. In return, the rent is exempt from IRS.
- Official source: Diário da República
- Portaria n.º 454/2026/1
- Data of 22 October 2026
Key figures
Monthly ceilings in Cascais
The T2 ceiling ranks 2nd highest of 308 municipalities and 2nd of 16 in the Lisbon district.
- T0, maximum rent per month
- €752
- T1, maximum rent per month
- €964
- T2, maximum rent per month
- €1,254
- T3, maximum rent per month
- €1,544
Simulator
Work out the ceiling for your property
The ceilings
Rent ceilings by size in Cascais
| Size | Ceiling | +10% parking | +10% class A or A+ | +20% both |
|---|---|---|---|---|
| T0 | €752 | €827.20 | €827.20 | €902.40 |
| T1 | €964 | €1,060.40 | €1,060.40 | €1,156.80 |
| T2 | €1,254 | €1,379.40 | €1,379.40 | €1,504.80 |
| T3 | €1,544 | €1,698.40 | €1,698.40 | €1,852.80 |
| T4 | €1,690 | €1,859 | €1,859 | €2,028 |
| T5 | €1,980 | €2,178 | €2,178 | €2,376 |
Cumulative uplifts (art. 2(4)). Above T5, add €100 per bedroom beyond the fifth: a T6 has a ceiling of €2,080.
The ceiling against the Cascais market
The T2 ceiling (€1,254) is 7% below the market estimate: letting at the ceiling costs the landlord about €91 a month. The quartiles of the T2 estimate run from €975 to €1,730: the ceiling sits between the 1st quartile and the median. With private parking and class A or A+, the T2 ceiling rises to €1,504.80 and covers the estimate.
| Size | RSAA ceiling (€/month) | Market est. (€/month) | Difference | Ceiling (€/m²) | Market (€/m²) |
|---|---|---|---|---|---|
| T1 · 48 m² | 964 | 870 | +11 % | 20.08 | 18.13 |
| T2 · 85 m² | 1,254 | 1,345 | −7 % | 14.75 | 15.82 |
| T3 · 115 m² | 1,544 | 1,780 | −13 % | 13.43 | 15.48 |
| T4+ · 145 m² | 1,690 | 2,160 | −22 % | 11.66 | 14.90 |
Aluseg estimate, not an official figure: INE median of €16.22/m² (2025, 4,042 new leases) × INE size ratio of the municipality itself × reference floor area. See the Cascais rental market.
The ceiling against income in Cascais
A person on the median income in Cascais receives €1,210 a month after income tax (INE, 2024). The T2 ceiling (€1,254) takes 104 % of that income, against 111 % for the market rent (€1,345). For a couple on two median incomes, 52 % against 56 %.
Income per person after income tax, not household income: see how we read this number.
Looking for an affordable-rent home in Cascais?
Ask the landlord whether the lease will be in the RSAA (they file it with the IHRU, art. 6) and check the advert: up to €964 for a T1, €1,254 for a T2.
Municipal programme
Municipal Rental - Habitar Cascais Programme (Arrendamento Municipal - Programa Habitar Cascais, includes Arrendamento Municipal Jovem)
Municipal housing let below market price to residents aged 18 or over, with a rent equal to 30% of the household's net income (with ceilings by size) and allocation by lottery.
Information checked on 22/10/2026 on the official website: see the official page.
IRS saved at the ceiling in Cascais
A T2 in Cascais let at the ceiling earns €15,048 a year. Outside the RSAA, IRS on that gross rent would reach €3,762 (25% rate) or €1,504.80 (10% rate, for rents up to €2,300 a month). Under the RSAA, the tax is €0.
| Size | Rent at the ceiling (€/month) | Rent per year (€) | IRS at 25% (€/year) | IRS at 10% (€/year) | IRS under the RSAA (€/year) |
|---|---|---|---|---|---|
| T0 | 752 | 9,024 | 2,256 | 902.40 | 0 |
| T1 | 964 | 11,568 | 2,892 | 1,156.80 | 0 |
| T2 | 1,254 | 15,048 | 3,762 | 1,504.80 | 0 |
| T3 | 1,544 | 18,528 | 4,632 | 1,852.80 | 0 |
| T4 | 1,690 | 20,280 | 5,070 | 2,028 | 0 |
| T5 | 1,980 | 23,760 | 5,940 | 2,376 | 0 |
Gross rent, no deductible expenses. Exemption: art. 6 of annex III. Rates: Landlord IRS in 2026.
Ceilings in the Lisbon district
Cascais has the 2nd highest T2 ceiling of 16 municipalities in the Lisbon district. The highest is Lisbon (€1,309) and the lowest is Cadaval (€456). The district median is €817.50: Cascais is 53% above the median.
| Municipality | T0 (€/month) | T1 (€/month) | T2 (€/month) | T3 (€/month) | T2 market, est. (€/month) | Difference |
|---|---|---|---|---|---|---|
| Lisbon | 785 | 1,006 | 1,309 | 1,612 | 1,420 | −8 % |
| Cascais | 752 | 964 | 1,254 | 1,544 | 1,345 | −7 % |
| Oeiras | 703 | 901 | 1,172 | 1,443 | 1,220 | −4 % |
| Amadora | 593 | 759 | 988 | 1,217 | 1,040 | −5 % |
| Odivelas | 581 | 745 | 969 | 1,193 | 1,065 | −9 % |
| Loures | 538 | 689 | 896 | 1,104 | 960 | −7 % |
| Sintra | 514 | 671 | 866 | 1,056 | 940 | −8 % |
| Vila Franca de Xira | 491 | 629 | 819 | 1,008 | 925 | −11 % |
| Mafra | 490 | 627 | 816 | 1,005 | 860 | −5 % |
| Arruda dos Vinhos | 364 | 531 | 671 | 784 | 645 | +4 % |
| Torres Vedras | 393 | 531 | 671 | 806 | 735 | −9 % |
| Alenquer | 394 | 505 | 657 | 810 | 735 | −11 % |
| Azambuja | 353 | 453 | 589 | 725 | 675 | −13 % |
| Sobral de Monte Agraço | 336 | 430 | 559 | 689 | 655 | −15 % |
| Lourinhã | 328 | 420 | 546 | 673 | 630 | −13 % |
| Cadaval | 274 | 350 | 456 | 562 | 505 | −10 % |
From the highest T2 ceiling to the lowest. Market: Aluseg estimate from INE data; – = no data.
Rent under the RSAA with everything in order
Lease, Tax Authority and rent receipts in a free account.
FAQ: affordable rent in Cascais
What is the maximum rent for a T2 in Cascais under the RSAA?
€1,254 a month, the 2nd highest ceiling in the country. With private parking or an energy certificate of A or A+ it rises to €1,379.40; with both, to €1,504.80.
Is the T2 ceiling in Cascais above or below the market rent?
It is 7% below the Aluseg estimate for an 85 m² T2, about €1,345 a month (INE, 2025).
How do I get the IRS exemption?
Report the lease to the Tax Authority and file it with the IHRU by 15 January of the following year. See the RSAA guide.
What if the rent goes over the ceiling?
The exemption is lost from the breach and the tax is settled with compensatory interest (art. 7 of annex III).
Sources and methodology
Source: Portaria n.º 454/2026/1, de 13 de outubro (PDF) and Decree-Law 97/2026, annex III, read on 22 October 2026. Uplifts calculated by us (art. 2(4)). For information only, not legal or tax advice.