What the rent percentage includes and leaves out
Editorial draft awaiting owner review. Excluded from indexing and the sitemap.
Dividing rent by income relates two amounts. The percentage describes part of a budget but does not cover every living cost.
The denominator matters
Use net income for the same period and scope as the rent. Household rent requires total household net income. For individual comparisons in shared housing, use your rent share and your income.
Rent and total housing costs are different calculations
Hypothetical example: €900 rent on €1,800 income is 50%. Adding €100 in utilities makes total housing costs 55.56%. Rent alone remains 50%. Counting utilities twice would inflate the second result.
A percentage is not permission to spend
Households with the same percentage may have very different food, care, transport or debt costs. We do not treat 30% as a rule or label people who exceed it. This calculation is not equivalent to a European statistical indicator using different definitions of costs or income.
What to do with the result
Use the same figures in the budget calculator to see what remains after all declared expenses. With zero income, the percentage is undefined; displaying 0% would hide the mathematical problem and mislead.
Check the calculation
The tool includes a formula, an explicit example and sources. No registration or transmission of your amounts is needed.
Open calculatorProject sources and methodology. This guide uses mathematical examples, not population statistics.