How Much Home Can You Actually Afford? A Simple Guide Beyond the Mortgage Calculator
Mortgage calculators only tell part of the story. Here’s how to figure out what you can really afford before you start house hunting.
Online mortgage calculators are a good starting point — but they only tell you what a lender might approve you for, not what you’ll actually feel comfortable paying every month. Those are two very different numbers.
Here’s how to figure out your real number before you start touring homes.
Start With Your Comfortable Monthly Payment
Instead of asking “what’s the biggest loan I qualify for,” ask: “what monthly payment lets me still save, travel, and handle a surprise expense?”
A simple gut check: add up your current rent or mortgage, then ask how much more you could comfortably pay without feeling squeezed. That number — not the bank’s maximum — should guide your search.
Know the 28/36 Rule
Lenders often use this rule of thumb:
- 28% — Your monthly housing payment (principal, interest, taxes, insurance) shouldn’t exceed 28% of your gross monthly income.
- 36% — All your monthly debt combined (housing plus car payments, student loans, credit cards) shouldn’t exceed 36% of your gross monthly income.
It’s a guideline, not a law — but it’s a useful sanity check against a lender’s maximum approval.
Don’t Forget the Cash You’ll Need Upfront
Your affordable monthly payment is only half the picture. You’ll also need cash on hand for:
- Down payment
- Closing costs (typically 2–5% of the purchase price)
- Moving costs
- An emergency cushion left over after closing
A common mistake is stretching every available dollar toward the down payment and leaving nothing in reserve. Aim to keep some savings untouched after you close.
Factor In What Calculators Miss
Standard calculators often leave out:
- HOA fees, if applicable
- Maintenance costs — a common rule of thumb is budgeting around 1% of the home’s value per year
- Utility differences — an older or larger home may cost more to heat and cool than your current place
- Private mortgage insurance (PMI), if your down payment is under 20%
The Real Test
Once you have a number in mind, try living on it for a month or two before you buy. Set aside the difference between your current housing cost and your target payment into savings. If it’s manageable, you’ve found your real number. If it’s a strain, it’s worth adjusting your search before you fall in love with a home outside your comfort zone.
Bottom Line
A mortgage calculator can tell you what’s possible. Only you can tell you what’s comfortable. Talk to a lender to get pre-approved, but decide your number before you start touring homes — not after.
Have questions about what you can afford in today’s market? Reach out, we’re happy to walk through it with you, no pressure.