The Bank Approval Trap
Banks in India typically approve home loans up to 80% of the property value, and their eligibility calculations are based on your gross income — not your actual take-home pay after taxes, EMIs, and living expenses.
A bank telling you "you are eligible for a ₹1.2 crore loan" does not mean buying a ₹1.5 crore house is smart. The bank profits from your interest payments — they have zero incentive to protect your cash flow. That responsibility falls entirely on you.
The question you must answer is not "How much can I borrow?" but "How much mortgage payment can I sustain for 20 years without sacrificing other financial goals?"
The Three Affordability Rules
Rule 1: The 28% EMI Rule
Your total home loan EMI should not exceed 28% of your gross monthly income. If your household earns ₹1,50,000/month, your maximum sustainable EMI is ₹42,000. This ensures the mortgage doesn't crowd out other essential expenses.
Rule 2: The 40% Total Debt Rule (FOIR)
Your Fixed Obligation to Income Ratio (FOIR) — all monthly debt payments combined (home loan EMI + car loan + personal loan + credit card minimums) — should not exceed 40% of your gross income. Banks use this ratio for eligibility; you should use it for self-protection.
Rule 3: The 5x Income Rule
Your home's total purchase price (not just the loan) should ideally not exceed 5 times your annual gross household income. In India's metros this often stretches to 7x, but anything above 5x significantly strains your financial flexibility for the next two decades.
Hidden Costs That Wreck Your Budget
First-time buyers consistently underestimate the total cost of home ownership. These are the costs beyond the EMI that you must factor in:
5–7% of property value (varies by state). On a ₹80 lakh home, this alone is ₹4–5.6 lakh in cash upfront, paid on possession day.
5% GST on under-construction properties (1% for affordable housing below ₹45 lakh). GST is not levied on ready-to-move-in resale properties.
0.5–1% processing fee, plus legal/technical verification charges of ₹5,000–₹15,000. MODT charges vary by state.
Modular kitchen, wardrobes, flooring upgrades, curtains, and appliances typically cost ₹5–20 lakhs for a 2BHK in a metro, money most buyers fail to reserve.
₹3,000–₹12,000/month maintenance in gated communities, plus annual property tax (0.1–0.5% of property value depending on location).
A home insurance policy covering structure and contents costs ₹5,000–₹15,000 annually and is strongly advisable (sometimes mandatory for mortgaged properties).
How Much Down Payment Should You Make?
Banks require a minimum 20% down payment (they finance up to 80% LTV). But is 20% the optimal amount?
- 20% Down (Bank Minimum): Maximizes your home buying power but leaves you with a large loan, high EMI, and high total interest outflow. Acceptable only if remaining savings are intact.
- 30–40% Down: Significantly reduces EMI and total interest. Provides a buffer against property value falls (prevents being "underwater" on the loan). Recommended if you have the liquidity.
- Never deplete your emergency fund: After paying the down payment, registration costs, and setup costs, you must still have at least 6 months of expenses in liquid savings. Never go below this threshold for a home purchase.
A Worked Example: ₹80 Lakh Home in Bangalore
| Cost Item | Amount |
|---|---|
| Property Value | ₹80,00,000 |
| Down Payment (20%) | ₹16,00,000 |
| Stamp Duty & Registration (~6%) | ₹4,80,000 |
| Interior & Setup | ₹8,00,000 |
| Loan Processing Fee (0.5%) | ₹32,000 |
| Total Cash Required at Possession | ₹29,12,000 |
| Home Loan Amount | ₹64,00,000 |
| EMI at 8.5% for 20 years | ≈ ₹55,700/month |
| Monthly Maintenance | ₹5,000/month |
| Total Monthly Commitment | ≈ ₹60,700/month |
| Income Required (28% rule) | ≥ ₹2,17,000/month household |
Use the Loan Calculator and Buy vs Rent Analyzer to run these numbers for your specific situation before making any decisions.
The Pre-Purchase Checklist
- EMI is below 28% of gross household income
- Total FOIR including all existing loans remains below 40%
- 6+ months emergency fund remains intact after all purchase costs
- Budget for stamp duty, registration, interior, and first-year maintenance is separate from down payment
- CIBIL score above 750 for best interest rates
- Existing SIPs and investments are not being liquidated for the purchase