Short answer: Cap rent at 25–30% of take-home. Above that, savings and wants both get squeezed hard.
Cap rent at 25–30% of take-home. At 30% the rest of a normal budget still fits; past 35% something else has to give, and it is almost always savings.
The arithmetic is simple enough to do in your head. On ₹50,000 take-home, 30% is ₹15,000. On ₹80,000 it is ₹24,000. On ₹1,20,000 it is ₹36,000. Use take-home after tax and PF, not CTC — CTC includes money you never see, and budgeting against it is how people end up ₹6,000 short every month.
Rent is not the housing cost
The number that actually leaves your account each month is rent plus society maintenance, plus electricity, plus water, plus internet, plus parking, plus the amortised cost of the deposit you are not earning interest on. A ₹18,000 flat with ₹3,500 maintenance and ₹2,000 of utilities is a ₹23,500 housing cost. Compare flats on that total, never on the headline.
The deposit changes the maths
Ten months' deposit is still common in Bengaluru and Hyderabad, two to three in Delhi NCR and Mumbai. A ₹20,000 flat at ten months locks up ₹2 lakh that earns nothing for the length of the tenancy. Over two years, at even 6%, that is roughly ₹25,000 of forgone interest — about ₹1,000 a month, which belongs in your comparison.
When to break 30%
Paying 35% can be correct when the flat removes a cost or a risk: a location that eliminates a ₹6,000 commute and ninety minutes a day, or a safer building for someone living alone. Pay it deliberately, write down what it replaced, and check in six months that the saving actually materialised. Paying 35% because the flat was nicer and the agent was persuasive is a different decision wearing the same clothes.
Put numbers to it with the free budget calculator and emergency fund calculator — no sign-up, works on any phone.
Frequently asked questions
Is the 30% rule on gross or take-home pay?
Take-home, after tax and PF. Using CTC inflates the figure by the part of your package you never receive, which is how budgets end up several thousand short every month.
Does the rule change if I split rent with a flatmate?
Apply it to your share. Two people paying ₹12,000 each on a ₹24,000 flat are each at 30% of a ₹40,000 take-home, which is fine — the flat’s headline rent is irrelevant to your budget.
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