Calculate Your Home Loan Affordability (India)
The problem
You're considering a home loan but don't know how much you can actually borrow, what the real monthly outgo will be, how much total interest you'll pay over 20 years, or whether the EMI comfortably fits your budget when stacked against all other obligations. This workflow answers all four questions before you visit a bank.
What You'll Need Before Starting
Required
Your current monthly net salary (take-home)
Banks use the 40% FOIR rule — your new EMI + existing EMIs must stay below 40-50% of net income
Approximate loan amount you're considering
Determines your monthly EMI and total interest paid over the tenure
Loan tenure in mind (15, 20, or 25 years)
Shorter tenure = higher EMI but much lower total interest; longer tenure = lower EMI but higher interest
Your existing loan EMIs (car, personal loan, credit card)
FOIR calculation includes all existing obligations — missing this overestimates your eligibility
Optional (Makes It Easier)
Current home loan interest rate from your bank
Rates change monthly (8-9% typical); using outdated rates makes EMI estimates inaccurate
Your CIBIL score (if available)
Credit score 750+ gets ~0.5-1% lower interest rates; below 650 may disqualify you
Details of all other monthly expenses
The final budget check needs full picture (rent, utilities, groceries, insurance) to verify comfort
What you'll accomplish
Tools in this workflow
Follow this workflow in sequence to move from question to decision without losing context.
Step-by-step
Why this workflow works
Most people approach home loans backwards — they look at a property price first, then work backwards to an EMI. This workflow starts from affordability: what EMI can you sustain, and what loan amount does that afford you at current rates? The amortisation step then reveals the true cost of the loan over time — the total interest paid on a 20-year loan often exceeds the original principal. The compound interest step connects loan mathematics to your broader financial decisions (prepay vs invest). The budget step is the final gate — many borrowers realise only after this step that their planned EMI leaves insufficient margin for other financial goals.
Frequently asked questions
How much home loan can I get on a ₹1 lakh monthly salary?
At ₹1 lakh net monthly salary with no existing EMIs, Indian banks typically approve a loan where the EMI is 40–50% of net income, i.e., ₹40,000–₹50,000 per month. At 8.75% p.a. for 20 years, a ₹40,000 EMI corresponds to approximately ₹45–47 lakh of loan amount. At ₹50,000 EMI, approximately ₹56–58 lakh. Your actual eligibility also depends on your CIBIL score (750+ for best rates), employment type (salaried vs self-employed), age, and existing obligations. Banks also apply a haircut — they typically lend up to 75–80% of the property value (LTV ratio), so a ₹60 lakh property allows a maximum loan of ₹45–48 lakh.
What is the difference between EMI and amortisation?
EMI (Equated Monthly Instalment) is the fixed monthly payment you make — the same rupee amount every month for the loan tenure. Amortisation is the underlying schedule showing how each EMI is split between principal repayment and interest. In the early months, most of the EMI is interest (because outstanding principal is highest). As principal reduces, interest charges fall and more of each EMI goes toward principal. The amortisation schedule shows this month-by-month or year-by-year breakdown, revealing your outstanding balance and total interest paid at any point.
Is a 20-year or 15-year tenure better for a home loan?
A shorter tenure means higher EMI but much lower total interest. Example: ₹50 lakh at 8.75% p.a. — 20-year tenure gives EMI ≈ ₹44,000 but total interest paid ≈ ₹55.6 lakh. 15-year tenure gives EMI ≈ ₹50,000 but total interest paid ≈ ₹39.8 lakh — saving nearly ₹16 lakh in interest for ₹6,000 more per month. The decision depends on your cash flow comfort. If you can manage a higher EMI, shorter tenure is mathematically superior. Alternatively, take a 20-year tenure for lower EMI but make regular partial prepayments — this effectively shortens the tenure while preserving flexibility.
What is FOIR and how do banks use it to approve home loans?
FOIR (Fixed Obligation to Income Ratio) is the ratio of your total fixed monthly obligations to your net monthly income. Fixed obligations include all existing loan EMIs (personal loan, car loan, credit card minimum payment) plus the new home loan EMI being applied for. Most banks cap FOIR at 40–50% for salaried employees and 40–45% for self-employed individuals. If your net income is ₹80,000 and you already pay ₹15,000 in a car loan EMI, your remaining eligibility is ₹40,000 × 80,000 - ₹15,000 = ₹17,000 for a new home loan EMI — significantly limiting your loan amount.
Should I prepay my home loan early or invest the surplus?
The mathematical answer depends on the comparison: if your home loan interest rate (say 8.75%) exceeds your post-tax investment returns, prepay. If your investments return more post-tax, invest. Equity mutual funds have historically returned 12–14% p.a. pre-tax over 10+ year periods, making investment mathematically superior to prepayment for most under 50 with long-term horizons. However, home loan interest is also tax-deductible under Section 24 (up to ₹2L), effectively reducing your net loan rate to ~6.5–7% for those in the 30% tax bracket. Personal risk tolerance matters too — being debt-free has psychological value that numbers don't capture.