Skip to content
Jarviix

Loans · 8 min read

How Banks Calculate Loan Eligibility (The Real Formula)

The exact formulas Indian banks use to decide how much loan you qualify for — FOIR, LTV, NMI multiplier — and how to optimise each lever to get a higher sanction at a lower rate.

By Jarviix Editorial · Apr 12, 2026

Calculator and loan documents on a desk
Photo via Unsplash

Walk into any bank, ask for a loan, and within minutes a relationship manager will quote you a 'maximum eligible amount'. The number feels personal — based on your salary slip, your CIBIL report, your job, your age. It is, in fact, almost entirely formulaic. Banks don't ponder your loan application; they run it through three or four well-defined ratios, and the output is the sanction amount.

Understanding the formula matters for one simple reason: every input is, to some degree, in your control. A small change in any of them — a closed credit card, a co-applicant, a longer tenure, a slightly higher down payment — can change your eligible loan amount by lakhs. This guide unpacks the formula in plain English and shows where the levers are.

The three numbers banks actually look at

Eligibility math in India is built on three core ratios. Different banks weight them slightly differently, but the core stays remarkably consistent across SBI, HDFC, ICICI, Axis and the rest.

1. FOIR — Fixed Obligation to Income Ratio

This is the single most important number in any loan application after your CIBIL score.

FOIR = (Total monthly EMI obligations) / (Net monthly income)

Where 'total monthly EMI obligations' includes your existing home loan, car loan, personal loan, education loan, credit card minimum-due payments — and the new EMI you're applying for.

Banks typically allow:

  • 40% – 50% of net income for borrowers earning ₹30,000 – ₹75,000/month
  • 45% – 55% for those earning ₹75,000 – ₹2,00,000/month
  • 50% – 65% for borrowers above ₹2,00,000/month

So if you earn ₹80,000 net, with no existing EMIs, the bank allows a new EMI of roughly ₹40,000–₹44,000. That EMI, at the prevailing rate over the prevailing tenure, back-solves to your maximum eligible loan amount.

2. LTV — Loan to Value (for secured loans)

For home loans, car loans and loan against property, banks also cap the loan as a percentage of the asset value:

LTV = (Loan amount) / (Property value)

RBI rules in 2026 cap home-loan LTV at:

  • 90% for properties priced up to ₹30 lakh
  • 80% for properties priced ₹30 lakh – ₹75 lakh
  • 75% for properties above ₹75 lakh

So even if your FOIR allows you to service a ₹2 crore EMI, on a ₹2 crore property the bank will lend at most ₹1.5 crore (75%). The remaining ₹50 lakh has to come from your own pocket as the down payment.

For personal loans (unsecured), there is no LTV — but the bank applies an internal cap of typically 12–24× your monthly net income.

3. NMI Multiplier — Net Monthly Income Multiplier

For personal loans, most banks short-cut the eligibility math with a multiplier:

Maximum loan amount = Net monthly income × Multiplier

The multiplier varies by lender and profile:

  • 12× – 15× for entry-level salaried (₹25,000 – ₹50,000/month)
  • 18× – 24× for mid-level salaried at large employers
  • 24× – 36× for premium-segment customers (top employers, ₹2L+ salary, 750+ CIBIL)

So a ₹60,000-net professional at a tier-1 employer might see eligibility quoted as ₹14–20 lakh — that's the multiplier in action, before the FOIR check potentially reduces it further.

The actual eligibility formula, end to end

Putting it all together, here's how a typical home-loan eligibility runs:

Step 1 — Compute FOIR-allowed EMI:

Allowed EMI = (Net monthly income × FOIR cap) − Existing EMIs

Step 2 — Convert allowed EMI to a loan amount at the offered rate over the offered tenure:

Loan amount = Allowed EMI × [(1+r)^n − 1] / [r × (1+r)^n]

Where r is the monthly interest rate and n is the tenure in months.

Step 3 — Apply the LTV cap:

Final eligibility = min(FOIR-derived loan amount, LTV × Property value)

The smaller of the two wins. For most middle-income borrowers in metros, FOIR is the binding constraint. For high-income borrowers buying modest property, LTV becomes the binding one.

A worked example

Consider a 32-year-old salaried professional, net take-home ₹1,20,000/month, with an existing car-loan EMI of ₹15,000. CIBIL 770. She wants a home loan to buy a ₹90 lakh apartment in a tier-1 city. Bank offers 8.75% over 25 years.

FOIR check (cap 55%):

Allowed EMI = (₹1,20,000 × 55%) − ₹15,000 = ₹51,000

Loan amount at 8.75% / 25 years against ₹51,000 EMI:

₹61,80,000

LTV check (75% on ₹90 lakh property):

= ₹67,50,000

Final sanction = min(₹61.8L, ₹67.5L) = ₹61.8L

Down payment required = ₹90L − ₹61.8L = ₹28.2 lakh

Now, the same borrower, after closing the car loan:

Allowed EMI = ₹1,20,000 × 55% = ₹66,000

Loan amount ≈ ₹80 lakh

LTV cap stays at ₹67.5L → final sanction = ₹67.5L

By closing one EMI, she increased her sanction by ₹5.7 lakh and reduced her down payment by the same amount. That's the formula at work.

The five levers that actually move your eligibility

Each of these is small individually, large in combination.

1. Close existing small EMIs before applying

Every ₹5,000 of existing EMI you can clear adds roughly ₹6 lakh of home-loan eligibility (at 8.75%, 25 years). Pay off small personal loans, no-cost EMIs and credit-card EMI conversions before applying for a large home loan.

2. Add a co-applicant

A spouse, parent or sibling with stable income can be added as a co-applicant. Their net income is added to yours for FOIR purposes — often doubling the eligible amount. The trade-off: both become jointly liable for the EMI.

3. Stretch the tenure

A longer tenure produces a smaller EMI, which fits a larger loan within the same FOIR window. Going from 20 to 30 years on a home loan can lift your eligibility by 25–35%. The cost: more total interest paid. Most borrowers should take the longer tenure for eligibility, then prepay aggressively in the early years.

4. Improve the offered rate

The same FOIR-allowed EMI, at a 50 bps lower rate, funds about 4% more loan principal. A high CIBIL score (780+), a banking relationship of 2+ years, and a clean salary credit history are the main levers for a better rate.

5. Disclose all eligible income

Banks consider variable pay (bonus, incentives, RSU vests) at typically 50% of the trailing 24-month average. Many borrowers under-report this and lose 10–20% of eligibility. Submit Form 16, the last 24 months of bank statements, and the latest appraisal/RSU letters — let the bank apply the haircut, don't pre-haircut yourself.

Common eligibility myths

  • 'A higher CTC means higher eligibility.' No — the bank looks at net take-home, not CTC. The gap is usually 25–35%, often more once EPF, employer insurance and notional bonuses are stripped out.
  • 'Eligibility is the same across all banks.' It isn't. Different banks have different FOIR caps, different income multipliers, and different employer category lists. The same borrower can see ₹15 lakh of variation between lenders on the same day.
  • 'The bank will tell me the optimal structure.' They tell you what fits your profile within their internal policy. Optimising tenure, co-applicants and existing-EMI cleanup is your job, not theirs.
  • 'Taking a personal loan to fund the down payment is fine.' It dramatically inflates your FOIR and usually reduces your home-loan eligibility by 2–3× the personal-loan amount itself. Genuinely save the down payment.
  • 'High eligibility means I should borrow the maximum.' No. Borrow what you can comfortably service if your income drops 25%. The bank's FOIR cap is its risk number — yours should be lower.

Pro tips for a higher sanction

  • Pull your CIBIL report 6 months before applying and lift it above 780 if it isn't already. The rate drop alone can add ₹3–5 lakh to a home-loan sanction.
  • Use the EMI calculator to back-solve a target loan amount into the EMI you'd need, then compare to your actual FOIR headroom.
  • For self-employed borrowers, the bank looks at the average net profit of the last 2–3 years (not gross receipts) — clean, consistent ITRs across years matter far more than a one-time spike.
  • Maintain salary credits in the bank you'll borrow from for at least 6 months. Existing-customer rates and FOIR limits are routinely better than walk-in rates.
  • For home loans specifically, our salary calculator can help you size the property you should be looking at, given your real take-home — not a property a relationship manager 'thinks' you can afford.

Conclusion

Loan eligibility isn't magic. It's a deterministic formula with a handful of inputs — your net income, your existing EMIs, the offered rate, the tenure, the LTV cap. Once you can compute it yourself, the sanction the bank quotes stops being mysterious, and the levers you can pull to improve it become obvious.

Optimise the inputs before you apply. Close small EMIs, add a co-applicant, stretch the tenure to maximise eligibility, then prepay later. Lift your CIBIL score before, not after, the application. Done well, the same borrower can move from a 'just-enough' sanction to a comfortable one — without earning a single rupee more.

Frequently asked questions

What is FOIR in loan eligibility?

FOIR — Fixed Obligation to Income Ratio — is the percentage of your monthly take-home that already goes towards EMIs and other fixed credit obligations. Most Indian banks cap total FOIR (existing EMIs + the new loan EMI) at 40–55% of net monthly income. The lower your existing FOIR, the larger the loan you can be sanctioned, regardless of your CIBIL score.

Why does the bank look at net salary, not CTC?

Because CTC is a notional number — it includes EPF, gratuity, employer insurance, performance bonuses and other amounts that never hit your bank account every month. Banks underwrite to the cash that actually arrives on salary day, because that's the only money that can pay an EMI. The gap between CTC and net take-home is often 25–35% — and the bank's eligibility math uses the smaller number.

Can I include my spouse's income to get a bigger loan?

Yes — making your spouse a co-applicant lets the bank pool both incomes for FOIR calculations, often doubling the eligible loan amount. Both incomes are then jointly liable for the EMI. Beyond eligibility, joint home loans also unlock larger Section 24 and 80C tax deductions per applicant. Co-applicant doesn't have to be a co-owner of the property, though most banks prefer it.

How much home loan can I get on a ₹1 lakh monthly salary?

Roughly ₹65–80 lakh, depending on age, existing EMIs and the LTV cap on the property. The math: FOIR cap of ~50% gives you ₹50,000 of EMI capacity, which at 8.75% over 25 years funds a loan of about ₹62 lakh. With a co-applicant or zero existing EMIs, the same income can stretch to ₹80 lakh+. Use our EMI calculator to model your specific case.

Does a higher CIBIL score increase my eligibility amount?

Indirectly, yes. A high CIBIL score doesn't directly raise the FOIR cap, but it gets you a lower interest rate — and a lower rate means a smaller EMI on the same loan amount, which means you can borrow more within the same FOIR window. Going from 700 to 780 on a ₹50 lakh home loan can raise your eligible amount by ₹5–8 lakh purely through the rate-driven EMI compression.

Related Jarviix tools

Read paired with the calculator that does the math.

Read next