Real Estate & Property

Home Affordability Calculator

Lets users estimate and size home affordability instantly with formula, steps and examples — no manual math.

Enter your details

m
m
m²/unit
₹/unit
%
040
Your result
Home Affordability Calculator required
88
Area
80 m²
Estimated cost
₹8,800

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

  1. Household: ₹1,50,000 net monthly income, ₹15,000 existing car EMI, ₹25 lakh saved.
  2. At a 45% FOIR cap: max total EMIs = ₹67,500 → available for home loan: ₹52,500.
  3. At 8.75% for 20 years, ₹52,500/month supports a loan of ≈ ₹59.4 lakh.
  4. Down payment ₹25 lakh minus ~₹5 lakh for stamp duty/registration/interiors = ₹20 lakh usable.
  5. 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.

Loan supported by ₹50,000/month EMI, 20-year tenure
RateLoan amountChange 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.
A useful discipline: buy at the price where the EMI equals what you already save + pay in rent today. If you can't currently set aside the future EMI each month, the house will teach you that lesson expensively.

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

  1. Enter monthly income (net for Indian FOIR norms, gross for US-style DTI) and all existing loan payments.
  2. Set the rate you're actually quoted, tenure (prefer ≤20 years), and the DTI/FOIR cap you're comfortable with — try 40% before 50%.
  3. Enter your down payment after subtracting transaction costs and the protected emergency fund.
  4. 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.

Related calculators

Explore more Real Estate & Property calculators