How Much House Can You Really Afford? The Math Lenders Actually Use

If you've ever typed "how much house can I afford" into Google, you already know the internet is full of quick answers: multiply your salary by three. Multiply it by five. Use this calculator. Use that rule of thumb.

Here's the problem — none of that is how lenders actually calculate your number.

I'm Kris Anderson, a mortgage loan officer with BOC Bank, and I talk to Wichita Falls buyers about this almost every single day. So let's skip the guesswork and walk through the real formula — the one that actually determines what you qualify for.

Why "How Much Do I Make" Is the Wrong Question

Most people start affordability math in the wrong place. They take their income, apply some multiple they heard from a friend or a magazine, and treat that as their number.

The problem? That kind of rule of thumb can be wildly off — in either direction — depending on your personal financial picture.

What actually drives your homebuying budget isn't a multiple of your income. It's a ratio. It's called debt-to-income, or DTI, and it's the single biggest factor in what you qualify for.

What Is DTI, Actually?

In plain English, your DTI compares two things:

• Everything you owe monthly — car loan, minimum credit card payments, student loans, plus your future house payment

• Your gross monthly income — that's income before taxes

Lenders use this ratio to see how much breathing room is left in your budget after your current obligations. Most loan programs want to see your DTI fall under a certain range, though that range shifts depending on the loan type — some programs, especially certain first-time buyer and government-backed options, offer more flexibility than others.

Here's the part that surprises people most: your future house payment isn't the only thing being measured. Your existing debts count just as much. That means two people earning the exact same income can qualify for two very different mortgage amounts, simply based on what else they're paying down each month.

That's actually good news. It means your number isn't fixed — it's adjustable. Pay down the right debt, and your affordable range can shift in your favor.

Your Mortgage Payment Is Four Pieces, Not One

This is the part almost everyone forgets: your monthly house payment isn't just your loan amount. It's actually four separate pieces:

1. Principal and interest — the actual loan repayment

2. Property taxes — and in Texas, this piece can carry real weight, so it matters more here than in many other states

3. Homeowners insurance

4. Mortgage insurance — if your down payment falls below a certain threshold

All four of those combined are what actually gets measured against your income for your DTI ratio — not just the loan payment on its own.

That's exactly why a real affordability number can't come from a generic online calculator. Property taxes and insurance vary house to house, and a calculator that doesn't know local Wichita Falls tax rates is really just guessing. A local lender can build a far more accurate picture.

Qualifying for a Payment vs. Being Comfortable With One

Here's a distinction worth sitting with: what you qualify for and what you're comfortable paying aren't always the same number.

A lender can tell you the maximum payment you qualify for based on DTI. But it's worth asking yourself a second question entirely: what payment still lets you save, still lets you handle a surprise car repair, still lets you live the life you want outside of your mortgage?

Sometimes that number is lower than your max. That's completely fine — there's no rule requiring you to buy at the ceiling of what you qualify for.

This really is a two-part exercise:

• What do you qualify for?

• What do you actually want your monthly number to be?

Both answers matter.

The Simple Version to Remember

If you take nothing else from this, remember these four steps:

1. Add up your current monthly debts — car, cards, student loans, anything with a minimum payment.

2. Compare that total against your gross monthly income using the DTI ratio.

3. Remember your house payment is four pieces — principal, interest, taxes, and insurance — not just the loan amount.

4. Separately, decide what payment you'd genuinely feel comfortable with month to month.

Run through those four steps, and you'll have a far more realistic sense of your range than any "multiply your salary" rule of thumb could ever give you.

A Quick Look at the Wichita Falls Market

For context: median home prices in Wichita Falls have recently been sitting roughly around the $205,000 mark. And like many Texas markets right now, conditions have been shifting toward more balance — which generally means a bit more negotiating room for buyers than in recent years.

It's not the whole picture, but it's a useful data point as you think through your own number.

Ready for Your Real Number?

Rules of thumb are fine for daydreaming. But when you're actually ready to buy, you deserve a real number — one built on your actual income, your actual debts, and Wichita Falls property tax rates, not a generic guess.

That conversation takes about 15 minutes, and it costs you nothing. Send a message or use the link in the description to get started.

Next week: we're breaking down the pre-approval process step-by-step — so if you're ready to move forward, that's the one to watch.

Kris Anderson | Mortgage Loan Officer, BOC Bank NMLS# 1201276 | Equal Housing Lender | Text: 806-547-3733 Call: 806-322-1413 Email: kris@bocbanking.com | All loans are subject to credit approval.

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