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- Week 19: How much house can I afford?
Week 19: How much house can I afford?

Buying a home is one of the biggest financial decisions you’ll ever make — and one of the most emotional.
But before you fall in love with a house, it’s smart to know how much you can really afford.
The 28/36 Rule
Lenders often use the 28/36 rule to evaluate affordability:
28% of your gross monthly income should go toward housing costs
(mortgage, property taxes, insurance, HOA)36% of your gross monthly income should be the maximum total debt
(housing + car loans, student loans, credit cards)
Example: If you earn $75,000/year ($6,250/month),
28% = $1,750/month max for housing
36% = $2,250/month max for all debt payments combined

A Quick Formula for checking this
Maximum Home Price = (Annual Income x 2.5 to 4)
This depends on your debt, credit, and down payment.
Low debt, strong credit, 20% down = closer to 4x income
Higher debt, small down payment = closer to 2.5x income

Other Tips
Most lenders will give you a lot of debt, no problem.
25% of net monthly income as a preferable measure of home affordability in my opinion. It’s one from Dave Ramsey I do agree with.
Building wealth requires a margin. Consciously spending less on a home is one lever you can pull to do this.
The above 25% monthly net example vs. the earlier rules of thumb could create an amazing future beyond a sweet house.
It allows flexibility to use money for other endeavors like starting businesses, affording income gaps if a spouse wants to change careers or return to school, invest more in higher potential assets, and more.
While real estate is a great wealth builder, it’s not always optimal, especially in the case of a primary home.
Factor in rising costs like utilities, maintenance, and repairs
Keep a cushion for unexpected expenses or job changes
Bottom Line
You can’t control interest rates or housing markets — but you can control how much you borrow.
Start with a realistic budget, not a lender's maximum. Your future self will thank you.
Need a referral or want to discuss your tax planning strategy? I’m happy to help.

I provide comprehensive fee-only financial planning and investment management for clients in the St. Louis area and nationwide virtually.
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