Home loan eligibility: How much can you borrow?

I have watched the same scene play out many times: a buyer falls for a $400,000 house, then discovers the lender’s math tops out far lower. The gap between the home you want and the loan you can actually get is your home loan eligibility, and it is not a mystery number a bank invents. Lenders build it from your income, your debts and a pair of well-worn ratios. In this guide I work through that arithmetic in the open — two complete borrower examples and a salary table — so you can estimate your own ceiling before you ever sit down with a lender.

What is home loan eligibility?

So what is home loan eligibility, in one sentence? It is the largest loan whose total monthly cost fits inside the share of your income a lender is willing to let housing consume. Note the words “total monthly cost.” Your eligibility is not set by the loan payment alone. Lenders count principal, interest, property taxes, homeowners insurance and any mortgage insurance or HOA dues as one housing expense, then test that bundle against your income.

Different lenders label the same output differently — borrowing power, pre-qualification amount, or simply your eligibility for home loan approval. Eligibility is also not the same as pre-approval. Eligibility is an estimate you can do on paper in ten minutes; pre-approval is a lender verifying your documents and credit. But the estimate comes first, and it uses the same inputs, so a careful home loan eligibility check at home tells you almost everything a pre-approval will — except the exact interest rate you qualify for.

The home loan criteria lenders actually use

When I break down the home loan criteria that matter, they fall into five buckets:

• Income and its stability. Lenders use gross monthly income — before tax — and want to see it is steady, usually through two years of employment or income history.
• The 28/36 debt-to-income guidelines. The Consumer Financial Protection Bureau (CFPB) describes the classic pattern: housing expenses at or below 28% of gross income (the front-end ratio), and housing plus all other monthly debts at or below 36% (the back-end ratio). Only debts that appear on your credit report count — car loans, student loans, minimum credit card payments — not groceries or utilities.
• Credit profile. Your score does not change the 28/36 arithmetic, but it changes the interest rate you are offered, and the rate changes how much loan a given payment buys. It can also decide whether you are approved at all.
• Down payment. A bigger down payment shrinks the loan you need, which can pull an unaffordable house back inside your ratios — my first borrower below shows exactly this tension.
• Reserves and property. Cash left after closing, and the type of property, reassure lenders; both are secondary to income and debts.

The mechanical heart of it is the two ratios, so let me put them to work.

Worked example 1: a $90,000 salary carrying $765 of monthly debts

Meet my first borrower: $90,000 a year, which is $7,500 a month gross. Existing debts are a $420 car payment, a $260 student loan and $85 of minimum credit card payments — $765 a month in total. Now I run both tests:

The lower result binds. Here the back-end test wins — or rather, loses — because the existing debts eat $765 of the $2,700 total-debt allowance.

Now test the dream house: $400,000 with 20% down means a $320,000 loan. At 6.75% over 30 years the principal and interest alone is $2,075.51, and adding about $567 a month for property taxes and insurance gives a housing cost of $2,642.51 — $707.51 over budget. The house fails, and it fails on the debts, not the salary. Working backwards from the $1,935 budget: subtract the same $567 of taxes and insurance and $1,368 remains for principal and interest, which supports a maximum loan of $210,916 at 6.75% over 30 years — a home price of about $263,650 with 20% down. Same salary, same rate; the debts cost this borrower roughly $136,000 of house.

Worked example 2: a $62,400 salary carrying $410 of monthly debts

My second borrower earns $62,400, or $5,200 a month, with a $350 car payment and $60 of card minimums. The front-end test allows $1,456 of housing; the back-end test allows (36% × $5,200) − $410 = $1,462. This time the front-end test binds, by just $6. After setting aside $380 a month for taxes and insurance on a modest home, $1,076 remains for principal and interest — a maximum loan of $165,896 at 6.75% over 30 years, or a home around $207,370 with 20% down. I include this example because it shows the binding test can flip either way; you have to run both.

Home loan eligibility based on salary: the quick table

Most people who search for a home loan eligibility calculator based on salary really want one thing: a fast read on where their income lands. I built the table below to do exactly that job. It applies the 28% front-end guideline, sets aside $450 a month for property taxes and insurance, and converts the remaining principal-and-interest budget into a loan at 6.75% over 30 years. Read your home loan eligibility based on salary straight off your row — then remember the two warnings under the table.

Illustrative only: 6.75% fixed for 30 years, $450/mo taxes and insurance, no HOA or mortgage insurance, and — critically — no other debts consuming the 36% back-end allowance.

How to check home loan eligibility before you apply

Here is the exact sequence I use to check home loan eligibility on paper:

1. Write down your gross monthly income — salary divided by 12, before tax.
2. List every monthly debt payment from your credit report: auto, student, cards (minimums), personal loans.
3. Apply both ratios and take the lower housing budget, exactly as in the two worked examples.
4. Subtract taxes, insurance and HOA for the price range you are eyeing — roughly 1.2% to 1.6% of the price per year in many areas, divided by 12.
5. Convert the leftover payment into a loan amount. This is the step a calculator does best: drop your principal-and-interest budget into our Home Loan EMI Calculator by trying loan amounts until the payment fits, or compare full loan scenarios side by side in the Mortgage Calculator.

The fastest way to check loan eligibility is honestly this five-step worksheet — the same worksheet sits behind every housing loan eligibility calculator and every lender pre-approval conversation: income in, debts in, ratios applied. Do it before you tour homes, not after, and you will shop in the price band you can actually close on.

Sources: Consumer Financial Protection Bureau (CFPB) guidance on debt-to-income ratios and shopping for a mortgage. Interest rates are illustrative (6.75% fixed, 30 years); every payment and loan figure in this article was recomputed from the standard amortization formula.