How Much Down Payment Makes Sense?
More down payment always means less loan. But "less loan" isn't automatically the right goal. Here's the real reasoning behind how much to put down.
Most advice on down payments is either "put down as much as you can" or "keep it minimal and invest the rest", both stated with total confidence and almost no reasoning behind them. The actual answer sits somewhere in between, and understanding why gets you to a much better decision than either extreme.
Why is down payment different from every other lever in a home loan?
Recall how EMI amortisation works: interest is charged fresh each month on whatever principal remains outstanding. A down payment reduces that principal from day zero, before a single day of interest has ever accrued on it. This makes it functionally different from prepayment (which reduces principal partway through the loan) and different again from investing separately.
Because of this, increasing your down payment doesn't just save you that amount: it saves that amount plus whatever interest would have compounded on it for the entire loan tenure. Take the site's own base case: a ₹1,00,00,000 loan at 7.5% over 20 years pays ₹93,34,237 in total interest, almost as much as the principal itself, at a rate most people wouldn't call expensive. Put down an extra ₹5,00,000 (loan drops to ₹95,00,000) and total interest falls to ₹88,67,525, a saving of ₹4,66,712. That's about 93 paise saved for every extra rupee put down at day zero, roughly matching the loan's own interest-to-principal ratio, because pulling a rupee out before day one avoids the same proportional interest load the rest of the loan carries. It isn't "close to double," and treating it as such overstates the case; it's still a real, guaranteed, tax-free saving that no ordinary bank deposit or taxable investment return can match with the same certainty.
The core insight: a bigger down payment behaves like a guaranteed, risk-free return equal to your loan's interest rate, applied for the maximum possible duration, because it's avoiding interest from month one rather than reducing it partway through. No investment can offer that combination of certainty and duration.
So why doesn't everyone maximise their down payment?
If this were the only consideration, the advice would simply be "put down as much as humanly possible." Three real constraints push the other way.
1. Liquidity: the money you don't have anymore
Every rupee that goes into a down payment is a rupee you can no longer access for an emergency, a job transition, or an opportunity, and unlike an investment portfolio, you can't partially "cash out" a down payment later without refinancing or selling the property. On the ₹1,00,00,000 base loan (EMI ₹80,559), a commonly used buffer is 3-6 months of EMI in reserve, ₹2,41,677 to ₹4,83,354, kept out of the down payment entirely. Push every available rupee into the down payment instead, and a single job gap or medical bill forces you into a personal loan or a card at a far worse rate than the home loan you were trying to shrink. The interest saved by that last lakh of down payment is real, but it's not worth borrowing at 14-18% six months later to cover a cost the buffer would have absorbed for free.
2. Opportunity cost, if your investable return genuinely beats your loan rate
As covered in our prepay-vs-invest guide, if your realistic, risk-adjusted expected investment return is meaningfully higher than your loan rate, there's a legitimate argument for minimising the down payment and investing the difference instead. This is the same logic as prepayment, just applied to the initial decision rather than an ongoing one: you're choosing whether to "invest" the money at your guaranteed loan rate, or take the risk of investing it in the market for a potentially higher but uncertain return.
3. Loan eligibility and LTV rules
LTV caps how much of the property price a bank will lend; the separate question of how much EMI you can actually qualify for against your income is covered in the affordability guide. Indian banks typically won't lend 100% of a property's value. RBI's loan-to-value (LTV) norms cap what a bank or housing finance company can lend, on a sliding scale by loan amount: up to 90% for loans up to ₹30 lakh, up to 80% for loans between ₹30 lakh and ₹75 lakh, and up to 75% for loans above ₹75 lakh. On a ₹1 crore loan, that ₹75 lakh-plus slab means the bank is structurally capped at 75% LTV, so at least 25% of the property's value has to come from you regardless of how much more you'd prefer to borrow. These are ceilings, not guarantees: individual lenders can and do offer less depending on your credit profile, so treat the slab as the absolute floor for your minimum down payment, not the number your bank will necessarily match.
What's a practical way to think about the right number?
Rather than treating this as one extreme or the other, it helps to separate the down payment into two conceptual pieces:
- The mandatory minimum: whatever your bank's LTV rules require, plus enough buffer that you're not stretched to zero liquidity immediately after the purchase.
- The discretionary portion: any amount beyond the minimum that you're deciding whether to add. This is where the prepay-vs-invest comparison genuinely applies: compare your loan rate against your honest, risk-adjusted expected return on alternatives, and let that comparison, not a rule of thumb, guide how much of your available capital goes here.
A common trap: stretching to maximise down payment by draining every liquid asset, including money earmarked for near-term needs. A property purchase is exactly the moment unexpected costs tend to show up: registration charges, brokerage, furnishing, moving costs, and stamp duty, which is state-specific and easy to underbudget. Maharashtra charges 5% in urban areas (6% inside Mumbai, Pune, and Nagpur after the 1% metro cess) plus a 1% registration fee. Karnataka charges 5% in Bangalore plus 1% registration. Delhi charges 6% for male buyers and 4% for female buyers, plus 1% registration with no cap. On a ₹1 crore property, that's roughly ₹5-7 lakh in stamp duty and registration alone across these three cities, on top of the down payment, and states revise these rates without much notice. That's before the loan's own separate fees, processing, legal, MODT, CERSAI, covered in the processing fees and hidden costs guide. A down payment that leaves zero room for any of this isn't optimal, it's fragile.
How does down payment interact with the rest of your capital stack?
Down payment rarely exists in isolation. On the homepage's own default stack, ₹1,00,00,000 in own funds against a ₹1.4 crore property splits into a ₹40,00,000 down payment, a ₹20,00,000 MF lumpsum, and a ₹40,00,000 corpus earmarked to help fund the EMI. Move ₹5,00,000 out of the corpus and into the down payment, and you save the ₹4,66,712 in interest calculated above, but you also shrink the corpus that's supposed to cover the EMI while it's still being paid down, which is a real trade-off, not a free upgrade. The right down payment is the number that makes that whole stack survive its own job, not the number that looks best isolated from the rest of the plan.
For exactly how each of the calculator's 4 strategies decides its own down payment, MF, and corpus split, see strategy allocation on the methodology page.
See how down payment interacts with your full plan
The PlanMyLoans calculator's capital stack view shows exactly how a bigger down payment changes your loan amount, EMI, and total interest, alongside your MF lumpsum and EMI-funding corpus, all in one view.
Model this with your own numbers →Related guides
The one comparison that matters most (your loan rate vs. your expected investment return) and why "it depends" is a calculable answer, not a shrug.
The amortisation formula behind every EMI, why your interest payment is huge in year one and tiny in year twenty, and how to sanity-check any number a bank gives you.