Home Buying Planner

Affordability is a cash-flow question, not a price tag

"Can I afford this house?" has two honest tests, and both must pass. The upfront test: can you cover the down payment plus transaction costs without emptying your emergency fund? The monthly test: does the EMI plus running costs fit inside a sustainable share of income? Lenders cap total EMIs around 40–50% of gross income, but that's their risk limit, not your comfort — a planning ceiling of 30–35% of take-home leaves room for the rest of life, including the investing that shouldn't stop because you bought a house.

This planner works both tests simultaneously: give it your income, savings, and the property price, and it maps the full cost picture — loan size, EMI, upfront cash needed, and the recurring ownership costs the sticker price hides.

The down payment decision

Bigger down payments cut the EMI, total interest, and (in many markets) the rate itself, and eliminate PMI in the US below 80% loan-to-value. But draining every account to maximize the down payment is its own mistake — the day you get the keys is the day the transmission-failure phase of homeownership begins. A sound structure: emergency fund untouched (raise it after buying — homeowner emergencies cost more), then the largest down payment that still leaves a furnishing-and-repairs buffer. In India, keep Section 80C (principal) and 24(b) (interest, up to ₹2 lakh/year) deductions in mind — they modestly favor keeping a loan over stretching to avoid one.

Common mistakes

• Budgeting to the lender's maximum. Approval for a ₹1 crore loan is not a recommendation to take it; being house-poor is the most common self-inflicted financial wound.
• Forgetting transaction costs both ways. ~6–8% to buy (stamp duty, registration) and 1–2% to sell means a home must appreciate ~8–10% just to break even on a quick exit.
• Sizing the home for a hypothetical future. Buying for needs 10 years out means paying interest for a decade on rooms you don't use; buying for the next 5–7 years usually prices better.
• Ignoring the rate-shopping payoff. A 0.25% rate difference on a ₹64 lakh, 20-year loan is about ₹2.4 lakh — a few days of negotiation and balance-transfer comparison is the best-paid work you'll do that year.
• Stopping all investing to service the EMI. If the EMI leaves no room for retirement SIPs, the house is too expensive — a home is shelter plus one asset, not a substitute for a portfolio.

Decide, then optimize

Not sure buying beats renting at all? Run the rent-vs-buy calculator first — it settles the threshold question this planner assumes. Once committed, the mortgage calculator details the payment structure, the loan calculator compares offers, and the debt payoff calculator shows how prepayments shorten the road to owning it outright.