The Debt-to-Income Ratio (Taxa de Esforço) represents the portion of your income that is already committed to loan repayments.
It measures how much of your monthly earnings is effectively reserved to pay debts from the moment your salary arrives.
The Bank’s “Traffic Light”
Banks use this ratio to decide whether to grant financing.
If too much of your income is allocated to debt payments, the bank considers the risk too high and may refuse the loan.
Your Financial Safety
It helps determine whether you will maintain financial flexibility or live under excessive financial pressure after taking on a mortgage.
Start with your net monthly income (the amount received in your bank account).
Then add:
all existing loan repayments (car loans, credit cards, personal loans, etc.), and
the expected monthly payment for the new mortgage.
Ideal scenario:
Total debt payments should not exceed one-third (≈33%) of your net income.
Typical bank limit:
Portuguese banks rarely approve mortgages when total debt commitments exceed 35% of income.
If your net monthly income is €1,500:
Total loan payments of €500 → Debt-to-Income ratio = 33% ✅ (generally acceptable)
Total loan payments of €750 → Debt-to-Income ratio = 50% ❌ (approval becomes unlikely)
At this level, half of your income is already financially committed.
Base salary
Pensions or retirement income
Rental income from leased properties
Note:
Variable income such as commissions or bonuses may not be fully considered by banks when calculating the Taxa de Esforço.