Eligibility is mostly about affordability
Most lenders start with one question: how much can you repay every month without stretching yourself too far? They look at your regular income, subtract or cap your existing obligations, and decide the largest monthly payment they are comfortable with. That payment, the interest rate and the term together determine the largest loan they will offer.
This is why two people with the same salary can be offered very different amounts. Someone with a car loan and a credit card balance has less room for a new instalment than someone with no debts.
Debt-burden ratios
Many banks and regulators use a debt-burden ratio, sometimes called DBR or debt-to-income. It compares your total monthly debt payments to your monthly income. The limits differ by country, by lender and by product type, and they change over time, so treat any published figure as a guide and check with the lender.
As a working method: multiply your monthly income by the ratio your lender uses, subtract the payments you already make, and the remainder is roughly the maximum new instalment.
From maximum instalment to maximum loan
Once you know the maximum monthly payment, you can turn it into a loan amount by reversing the EMI formula: Loan = EMI × ((1 + r)^n − 1) ÷ (r × (1 + r)^n). For example, if you can afford 2,000 a month at 8% over 60 months, the maximum loan is about 98,600.
Notice how the term changes the answer. The same 2,000 over 84 months supports a larger loan, but you will pay more interest. Eligibility calculators show this trade-off quickly.
Other things lenders check
Beyond the numbers, lenders look at employment type and length of service, your credit history, the employer or sector, age at the end of the loan term, and sometimes whether your salary is transferred to the bank. These factors can change the rate you are offered, which in turn changes the loan size your instalment can support.
A step-by-step estimate you can do yourself
Write down your regular monthly income as the lender is likely to count it. Write down every monthly instalment you already pay, including car finance, personal loans and the minimum payment on cards. Ask the lender, or check its website, for the debt-burden limit it applies to you. Multiply income by that limit and subtract existing instalments to get the room left. Then use an eligibility calculator, or the reverse EMI formula, with a realistic rate and the term you want. The result is a planning figure that helps you go into the conversation with the bank prepared.
Common reasons estimates differ from offers
Your own estimate and the bank's offer can differ for ordinary reasons. The bank may count only part of your allowances, may use a different rate after checking your credit report, or may cap the term because of your age or contract length. It may also apply its own stricter internal limit. None of this means your calculation was wrong; it means the inputs changed. Ask the lender which input caused the difference, since that tells you what to work on.
How to improve your position
Paying down or closing small debts frees up room in the ratio. Choosing a slightly longer term can raise eligibility, though at a cost. Comparing several lenders matters because rates and ratio policies differ. Most importantly, borrow based on what you can comfortably repay, not only on the maximum a bank will approve.
Frequently asked questions
Is eligibility the same at every bank?
No. Each lender applies its own policies within local regulations, so results vary.
Does a longer term always help?
It increases the amount you can borrow for the same instalment, but raises the total interest you pay.
Is an online estimate a guarantee?
No. It is a planning estimate; the lender makes the final decision.
Does my credit history affect eligibility?
Yes. It can affect whether you are approved and the rate offered, which changes the amount your instalment can support.
Can a co-applicant help?
Some lenders allow joint applications, combining incomes; rules vary by lender and product.