Complete guide
Reviewed July 2026"How much house can I afford?" has two very different answers: the maximum a lender will approve, and the amount you can carry while still saving, traveling and absorbing surprises. Lenders answer the first; this calculator helps you answer both — because the gap between them is where house-poor households are made.
The mechanics: your income and existing debts set a maximum monthly payment (via DTI limits), that payment converts into a maximum loan at today's rates, and your down payment tops it up to a purchase price. Every input shifts the answer, and rates shift it most.
Enter your income, existing EMIs/debts, rate, tenure and down payment above for your number — then read below for what the lender math hides.
The affordability math
Max monthly payment = Income × DTI cap − existing debt payments Max loan = Payment × ((1+r)^n − 1) ÷ (r × (1+r)^n) (inverse EMI formula) Max price = Max loan + down payment − closing costs
US convention caps DTI around 36–43% of gross income (the 28/36 rule: ≤28% housing, ≤36% total debt). Indian lenders cap FOIR at ~40–55% of net income. Same skeleton, different conventions — this calculator's sliders let you apply either.
Worked example
- Household: ₹1,50,000 net monthly income, ₹15,000 existing car EMI, ₹25 lakh saved.
- At a 45% FOIR cap: max total EMIs = ₹67,500 → available for home loan: ₹52,500.
- At 8.75% for 20 years, ₹52,500/month supports a loan of ≈ ₹59.4 lakh.
- Down payment ₹25 lakh minus ~₹5 lakh for stamp duty/registration/interiors = ₹20 lakh usable.
- Maximum realistic budget ≈ ₹79 lakh — not the ₹95 lakh a 55% FOIR stretch would suggest.
What income buys at different rates
Each 1% of rate moves buying power roughly 7–8%. This is why affordability calculators must be re-run whenever rates move, and why a rate negotiation is equivalent to a lakhs-larger budget.
| Rate | Loan amount | Change vs 8.5% |
|---|---|---|
| 7.5% | ₹62.1 lakh | +₹4.5 lakh |
| 8.5% | ₹57.6 lakh | — |
| 9.5% | ₹53.6 lakh | −₹4.0 lakh |
| 10.5% | ₹50.1 lakh | −₹7.5 lakh |
Lender maximum vs livable maximum
- Lenders approve to ~50%+ FOIR; comfort lives near 35–40%. The difference on ₹1.5 lakh income is about ₹15,000/month of breathing room.
- Stress-test at +2%: floating rates reset. If the EMI at +2% breaks your budget, the price is too high today.
- Count the full cost of ownership: maintenance/society charges, property tax and repairs add ~1–2% of home value annually beyond the EMI.
- Keep the emergency fund out of the down payment: 6 months of expenses+EMI stays untouched, or the first crisis becomes a default risk.
- Single-income households and variable earners should build the budget on the stable income only.
Hidden costs that shrink the budget
- Stamp duty & registration: 5–8% of price by state, not financeable.
- Brokerage (1–2%), legal checks, loan processing fees (0.25–1%).
- Interiors and furnishing: commonly 5–10% of price for new flats.
- GST (5%) on under-construction property.
- Parking, club membership and 'development charges' builders add late.
Using this calculator
- Enter monthly income (net for Indian FOIR norms, gross for US-style DTI) and all existing loan payments.
- Set the rate you're actually quoted, tenure (prefer ≤20 years), and the DTI/FOIR cap you're comfortable with — try 40% before 50%.
- Enter your down payment after subtracting transaction costs and the protected emergency fund.
- Read the maximum loan and price; then re-run at rate +2% and choose the smaller number.
Frequently asked questions
Glossary
- Affordability
- The purchase price your income, debts, savings and comfort thresholds jointly support.
- 28/36 rule
- Housing ≤28% and total debt ≤36% of gross income — the classic conservative guideline.
- FOIR / DTI
- The share of income committed to obligations; the lender's core capacity metric.
- LTV
- Loan-to-value — the financed share of the property; capped by regulation and pricing tiers.
- Down payment
- Your own funds toward the price; excludes stamp duty and fees, which are extra.
- Stress test
- Re-checking the budget at a higher rate (+2%) to survive floating-rate resets.
- House-poor
- Owning a home whose costs crowd out saving, investing and living.
- PMI
- US private mortgage insurance charged below 20% down — a cost, not a benefit to you.
Key takeaways
Affordability = spare debt capacity → max EMI → max loan at today's rate → plus down payment, minus transaction costs. Lenders will approve more than is good for you: cap yourself near 40% of net income, stress-test at +2%, protect the emergency fund, and count the 7–10% of hidden costs. The right house price is the one that leaves your savings rate alive.
Enter your income, debts and savings above — then re-run at rate +2% and let the smaller number set your house-hunting ceiling.