Housing numbers without the sales pitch

Take-home pay vs what a lender says you can afford

Qualifying for a loan is not the same as having money left after the payment. Pretax income sets the lender-style cap. Take-home pay sets the budget.

Open the calculator

Two different questions

A lender asks: if we approve this mortgage, can we get paid back? They start from pretax household income and a debt-to-income cap—often near 36%, sometimes 43% or higher—then subtract the debts you listed. Federal tax, state tax, 401(k), and health insurance are usually not treated as “debts” in that formula.

You ask: after the full housing payment, those same debts, and normal life, what is left from the deposit that actually hits the bank?

The lender is working from the bigger number (gross). You are working from the smaller one (take-home). That is why a price can look approvable and still feel impossible.

Why take-home is the budget number

Take-home is the deposit: monthly or every two weeks. That is the only pile of money you can assign. Pretax is what DTI math uses. Do not mix them.

This House Fits uses pretax to size the comfortable, stretch, and tight prices. It uses take-home to compute cash left after the full housing stack, debts, and living costs. If you leave the 78% guess in place, cash left is only as good as that guess. Type a real deposit.

A simple picture

Pretax income $150,000 is $12,500 per month gross. A 36% cap is $4,500 a month for housing plus other debts. If car and student loans already take $1,500, the lender-style room for housing is $3,000.

If take-home is $8,000 a month—not $12,500—that $3,000 housing payment plus $1,500 of debts is $4,500 gone before groceries, gas, or a repair. Cash left is whatever remains of $8,000, not of $12,500. Same house payment. Different pile of money.

What to do with both numbers

Use pretax for the lender-style ceiling. That is how DTI works.
Use take-home for cash left. That is how a month works.
If take-home annualizes higher than pretax, the leftover is fiction. Fix the inputs rather than trusting the stack.

The calculator keeps those jobs separate on purpose. It does not file a loan. It shows whether the stretch price spends the cash you need for everything that is not the mortgage.

Run your take-home through the calculator

Estimate only. Not a lender, pre-approval, or financial advice. Confirm numbers before you make an offer.