How Home Loan Eligibility Is Calculated: FOIR and Multiplier Method

Why two lenders quote you two different numbers

Ask three banks for a home loan pre-approval on the same salary slip and you will often get three different numbers — sometimes a gap of ₹10-15 lakh on a mid-size loan. That is not a sales trick. It happens because lenders in India don't run one formula; they run two, and then take whichever produces the lower number. If you don't know both formulas, you're negotiating blind — you can't tell whether a low number is a hard ceiling or just one lender's conservative multiplier.

This article walks through the two methods lenders actually use — the FOIR (Fixed Obligation to Income Ratio) method and the income-multiplier method — with real worked numbers, so you can compute your own estimate before you ever fill out an application. Once you know the maths, you can also see exactly which levers move your number: tenure, existing EMIs, interest rate, and age.

Net income vs CTC: the first place people go wrong

The single biggest reason people overestimate their own eligibility is confusing CTC (cost to company) with net in-hand income. Lenders do not calculate eligibility on your CTC. They calculate it on net monthly income — what actually lands in your bank account after tax, provident fund, and other statutory deductions. A ₹15 lakh CTC can easily translate to a net monthly income of ₹90,000-1,00,000 once you strip out employer PF contributions, gratuity accruals, and TDS.

The second concept lenders apply immediately is existing obligations — any EMI you are currently paying (car loan, personal loan, existing home loan, even a large recurring credit card payment) is subtracted from your income capacity before the eligibility formula is even applied. A ₹10,000 car EMI doesn't just reduce your monthly cash flow; it directly reduces the loan amount a lender is willing to sanction, because it eats into the same "obligation ceiling" a housing EMI would otherwise use.

This is the reason two applicants with identical CTCs can get very different offers: one has no other EMIs, the other is still paying off a two-year-old car loan.

Step-by-step: the FOIR / DBR method

FOIR — Fixed Obligation to Income Ratio, sometimes called DBR (Debt Burden Ratio) — is the ratio of your total monthly obligations (all EMIs, including the proposed home loan EMI) to your net monthly income. Lenders cap this ratio, and the cap is the ceiling your total EMI load is allowed to hit.

The formula:

Maximum permissible EMI = (Net Monthly Income × FOIR cap %) − Existing EMIs

Indian lenders typically apply a FOIR cap that scales with income — roughly 40% at lower income bands, rising to 50-55% at higher income bands, since higher earners are assumed to have more disposable income after essential expenses. These are indicative ranges; each lender's internal policy differs and is not published as a fixed rule.

Worked example — a salaried applicant with ₹60,000 net monthly income, no existing EMIs, and a lender applying a 50% FOIR cap:

Maximum permissible EMI = ₹60,000 × 50% = ₹30,000

At that maximum EMI of ₹30,000, and assuming a 20-year tenure at a typical floating home loan rate, this converts to a loan principal in the region of ₹28-30 lakh — the exact number depends on the rate applied at the time, which is why running it through an EMI calculator with the current rate is more reliable than a rule of thumb.

Step-by-step: the income-multiplier method

The second method skips the EMI-ratio maths entirely and instead applies a flat multiple to your net monthly (or sometimes annual) income to arrive at a maximum eligible loan amount. This is a faster, blunter method many lenders use as a sanity check or headline number in marketing material.

The formula:

Maximum eligible loan = Net Monthly Income × Multiplier (typically ~60-72x)

The multiplier varies by lender, loan tenure, applicant age, and risk profile, and is quoted anywhere from roughly 60x to 72x net monthly income in common industry practice — again, an indicative range rather than a published universal constant.

Worked example — the same ₹60,000 net monthly income applicant, with a lender applying a 65x multiplier:

Maximum eligible loan = ₹60,000 × 65 = ₹39,00,000

Notice this is meaningfully higher than the ₹28-30 lakh the FOIR method produced on the same income. That gap is exactly why "lenders take the lower of the two numbers" matters — the multiplier method is a ceiling, not a guarantee, and the FOIR method is what usually actually binds.

Side-by-side: FOIR output vs multiplier output

This is why quoting only the multiplier number to yourself — "I earn ₹60,000, so I can get ₹40 lakh" — is a common and costly overestimate. The FOIR ceiling usually wins.

Real-world mini scenario: one car EMI changes everything

Take the same ₹60,000 net-income applicant, but now assume they are 18 months into a car loan with a ₹12,000 monthly EMI. Nothing else about their profile changes.

Under the FOIR method at a 50% cap:

Maximum permissible EMI = (₹60,000 × 50%) − ₹12,000 = ₹18,000

That ₹18,000 EMI ceiling — down from ₹30,000 — converts to a loan principal in the range of ₹17-18 lakh at a 20-year tenure, roughly a 40% drop in eligible loan amount purely because of one existing EMI. This is the scenario that surprises first-time buyers the most: the car loan itself was manageable, but its presence on the credit file shrinks the home loan ceiling far more than the EMI amount alone would suggest, because it is subtracted before the housing-EMI ceiling is even calculated.

Modelling this kind of trade-off — should you close the car loan first, or does it not matter enough to delay the house search — is exactly what the financial planning suite is built to walk through, factoring in your full obligation picture, not just the headline salary number.

What moves each method

Pro tips to raise your number honestly

1. Clear small EMIs before applying, if you can. A ₹5,000-10,000 monthly obligation closed a few months before applying can materially raise your FOIR ceiling — closing it and waiting for it to reflect on your credit report is worth the delay in many cases.
2. Consider a longer tenure if your goal is loan amount, not fastest payoff. Extending tenure from 15 to 20 or 25 years lowers the EMI per lakh borrowed, which raises the FOIR-based ceiling — at the cost of more total interest paid, a trade-off worth running through a calculator rather than assuming.
3. Add a co-applicant with independent income. A working spouse or parent as co-applicant combines net incomes for both the FOIR and multiplier calculations, often the single biggest lever available to a young applicant.
4. Ask each lender for their FOIR cap and multiplier upfront, rather than assuming a "standard" figure — since these vary meaningfully by lender and by your income band, getting the actual numbers from two or three lenders before house-hunting avoids a shock at the offer stage.
5. Don't take on new debt in the months before applying. A new personal loan or a large credit-card-driven EMI in the run-up to a home loan application will suppress your FOIR ceiling exactly when you need it highest.

Common mistakes to avoid

• Using CTC instead of net income as your mental benchmark — this alone causes the most dramatic overestimates of what people expect to get sanctioned.
• Forgetting to net out existing EMIs before estimating your own ceiling, then being surprised when the sanctioned amount is far below a back-of-envelope guess.
• Anchoring only on the multiplier number because it's the bigger, more flattering figure, and ignoring that the FOIR method is usually what actually binds.
• Not accounting for tenure and rate changes when comparing offers — a lender quoting a higher eligible amount may simply be assuming a longer tenure, not a genuinely more generous policy.
• Applying at multiple lenders with hard credit pulls in a short window without first estimating your own number, which can dent your credit score for a marginal or no improvement in offers.

Putting it together with DrawMagic

Once you understand both formulas, the practical next step is running your own numbers instead of trusting a single lender's quoted figure. The EMI calculator lets you convert a FOIR-derived EMI ceiling into an actual loan principal at different tenures and rates, so you can see the FOIR-based number in rupees rather than as an abstract ratio.

From there, the financial planning suite helps you layer in the fuller picture eligibility maths ignores on its own — your down payment capacity, a contingency buffer, and how an existing EMI interacts with your target loan amount over time. And because eligibility is only half the affordability question, the stamp duty calculator adds in the one-time registration and stamp duty costs that a lender's eligibility number never includes, but your bank balance definitely will feel.

These tools are free to use without an account, and creating a DrawMagic account lets you save your numbers and revisit them as your income, obligations, or target city change.

Key takeaways

• Lenders use two methods — FOIR/DBR and income-multiplier — and apply whichever produces the lower eligible amount.
• FOIR caps typically range from around 40% at lower incomes to 50-55% at higher incomes, applied to net (in-hand) income, not CTC.
• The income-multiplier method commonly applies roughly 60-72x net monthly income, but is usually the higher, non-binding number.
• Existing EMIs are subtracted from your obligation capacity before either ceiling is calculated — a single car EMI can shrink eligibility by 30-40%.
• Net income, not CTC, is the number both formulas actually use — this is the single most common source of overestimation.
• Longer tenure raises the FOIR-based ceiling (lower EMI per lakh) but increases total interest paid.
• A co-applicant's income is one of the most effective ways to raise eligibility under both methods.
• According to the National Housing Bank's Trend & Progress Report 2024-25, individual housing loans outstanding stood at roughly ₹36.7 lakh crore as of September 2025, with the individual-housing-loan-to-GDP ratio at 11.23% for FY25 — a reminder that home loan credit in India is still a fast-growing, competitively priced category, worth shopping across lenders rather than accepting the first quote.
• Always confirm the exact FOIR cap and multiplier with your specific lender — these are policy choices that vary and are not standardised across the industry.

FAQ

Is the FOIR method always the stricter one? Not always, but in the majority of common income and obligation scenarios, yes — the FOIR ceiling tends to bind before the multiplier ceiling does, especially once any existing EMI is factored in.

Does a higher salary always mean a higher FOIR cap? Generally yes — lenders tend to apply higher FOIR caps at higher income bands on the assumption that essential living costs consume a smaller share of income, but the exact bands are lender-specific and not publicly standardised.

Can I improve my eligibility without earning more? Yes — clearing small existing EMIs, extending tenure, or adding a co-applicant can each raise your eligible loan amount without any change in your salary.