What's the difference between pre-qualification and pre-approval?

Pre-qualification is a soft estimate based on what you tell a lender — no credit pull, no verification. Pre-approval involves a hard credit check and document review (pay stubs, tax returns, bank statements) and produces a conditional commitment. Sellers take pre-approval seriously; pre-qualification letters are basically decorative.

Does my car loan affect how much house I can afford?

Yes, significantly. Your car payment counts toward your debt-to-income ratio (DTI). A $500/month car loan can reduce your maximum mortgage approval by roughly $75,000-$100,000 depending on rates. If you're about to buy a house, don't take out a new car loan in the six months before.

How much should I put down?

20% avoids private mortgage insurance (PMI) and gets you better rates, but it's not required. Conventional loans allow as little as 3% down for first-time buyers; FHA goes to 3.5%; VA and USDA can be 0%. Putting less down means a higher monthly payment and PMI (~0.5-1% of loan balance annually) until you reach 20% equity.

Should I max out my approval?

Almost never. Lenders approve based on backward-looking income and a formula that ignores childcare, retirement savings, medical expenses, and the cost of actually owning the house (maintenance, HOA, utilities jumping from apartment-size to house-size). A common guideline: spend about 80% of what you're approved for.

How do property taxes and insurance factor in?

Most lenders calculate a payment with principal, interest, property taxes, and insurance (PITI). Property taxes vary wildly — Texas averages 1.7% of home value, California 0.7%, Hawaii 0.3%. On a $400k house, that's a $200-$570/month spread just in taxes. Get specific quotes for your zip code before you fall in love with a price.

How Much House Can I Afford on $100k Salary?

Here's the uncomfortable truth most first-time homebuyers learn too late: the bank's maximum isn't a target, it's a ceiling you should stay well below. On a $100k salary, lenders will often approve you for a $400,000-$450,000 home. The amount you should actually spend is usually closer to $300,000-$350,000 — and this article will show you why.

The 28/36 rule in plain English

The classic affordability guideline, codified by Fannie Mae and followed by most conventional lenders, is called the 28/36 rule:

28% (front-end ratio):Your monthly housing payment — principal, interest, taxes, insurance, and HOA if any — shouldn't exceed 28% of your gross monthly income.
36% (back-end ratio):Your total monthly debt payments — housing plus car loans, credit cards, student loans, personal loans — shouldn't exceed 36% of your gross monthly income.

On $100k gross ($8,333/month), that's a housing cap of $2,333 and a total-debt cap of $3,000. If you have no other debt, you can use all $3,000 for housing under the back-end test. If you have a $500 car payment and $100 minimum credit card payment, you're capped at $2,400 for housing.

What $2,400/month actually buys

Let's translate that into a home price. Assume:

20% down payment
30-year fixed rate at 7%
Property tax ~1.2% of home value (national average)
Homeowners insurance ~$1,200/year

With those assumptions, $2,400/month total PITI works out to a home price around $315,000. Run your own numbers with the mortgage calculator using your actual rate and tax estimate.

Why the bank will offer you more

Many lenders will push the front-end ratio to 35-40% for strong borrowers (FHA goes to 43% or higher). On your $100k income, that could mean approval for a $450,000 house with $2,900+ monthly payments.

The bank is underwriting theirrisk, not your lifestyle. They want to know you probably won't default — not whether you can still eat out, save for retirement, or handle a surprise $10k expense. The formula ignores:

Retirement contributions (401k, IRA)
Childcare ($1,200-$2,500/month per child in many metros)
Health insurance if you're self-employed
The jump in utilities from a 900 sq ft apartment to a 2,200 sq ft house
Maintenance (rule of thumb: 1% of home value per year)
Furniture and setup costs (a new house easily eats $10-20k)

Closing costs: the hidden 2-5%

On top of your down payment, expect 2-5% of the loan amount in closing costs: lender fees, title insurance, appraisal, inspection, prepaid taxes and insurance, and more. On a $350,000 house with 20% down ($70,000), closing costs will run $7,000-$17,500. That money is due at signing, not absorbable into the mortgage.

A better rule: the 25% rule

Many personal-finance writers recommend a stricter cap: housing should be no more than 25% of your net(take-home) income, not 28% of gross. This accounts for taxes, retirement savings, and other pre-tax deductions that the lender's formula ignores.

On $100k gross, after federal tax, state tax, FICA, and a 10% 401k contribution, take-home might be ~$5,500/month. 25% of that is $1,375/month — which is actually about what $220,000 of house buys at 7%. Yes, that's much less than the bank will approve. It's also why people who follow the 25% rule build wealth and people who max out their approval often don't.

Run three scenarios, not one

Before you fall in love with a number, model three cases:

The bank's max: see the stress.
28% of gross: the traditional guideline.
25% of net: the sustainable number.

Compare each against your actual monthly budget — not what you "could" do if you cut back on dining out. Use what your life actually looks like today, plus a buffer for surprises.

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