Portugal & milestones calculator
Rent Affordability Calculator
Estimate the monthly rent you can afford while keeping savings and other bills intact.
Planning to buy a home →Reviewed by Syvoq Editorial Team ·
Use the lower of a rule and the cash flow you actually have
The percentage target gives a quick boundary; the cash-flow calculation checks that boundary against debt, utilities, and saving. The lower result is the safer planning number because a common rent ratio cannot see the rest of your obligations. Use take-home income and a realistic utility estimate for the specific home and household.
Monthly affordability is only half of moving. Deposit, advance rent, agency costs where applicable, transport, furniture, utility setup, and overlap between homes may require substantial cash. A rent can fit every month and still be premature if moving would empty the emergency fund.
A real-world check
The 30% rule says yes, but cash flow says less
Thirty percent of €3,000 is €900. If debt, a €500 savings goal, and €180 utilities leave only €760 before food, transport, and other essentials, the percentage result is too generous. The lower cash-flow number exposes that pressure before a lease is signed.
How to read the result
The two limits are close
The rule broadly matches the budget. Still test the exact home’s utilities, commute, and required upfront cash.
Cash flow is much lower
Debt or saving commitments are the binding constraint; using the headline ratio would squeeze other priorities.
No suitable rent appears
Explore location, sharing, timing, transport trade-offs, income, or debt rather than forcing a lease into a negative budget.
What this calculator cannot know
- The result does not include food, transport, insurance, childcare, moving costs, deposits, rent increases, or every utility.
- Landlords may apply different income or guarantor criteria; a planning result does not guarantee application approval.
What to do next
- Build a one-time moving budget alongside the monthly rent figure.
- Price utilities and the commute for each real property, not a generic average.
- Keep an emergency reserve after paying the deposit and initial rent.
See the whole plan
Track the house goal without losing sight of everything else
Keep the deposit, cash reserve, debt, and monthly budget visible in the same financial picture.
Common questions
About this calculator
Is 30% of income always the right rent target?
No. It is a common guideline. High-cost cities, debt, family size, and savings goals can make a lower or higher target more realistic.
Should utilities be included in rent?
Include utilities when comparing homes. A cheaper rent with high utilities may be less affordable than it looks.
How it works
The income rule multiplies take-home income by your target rent percentage.
The cash-flow rule subtracts debts, savings, and utilities from take-home income.
The calculator uses the lower number to avoid a rent estimate that breaks the rest of the plan.
Educational planning estimate. It does not replace an official calculation or individualized financial, tax, or legal advice.
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