The question used to be pleasant. In 2026 it has teeth: the median existing home runs about $429,300, 30-year mortgage rates have spent the year in the mid-6s, and the gap between what a lender will approve and what a budget can absorb has rarely mattered more. Affording a home now is less about finding a bargain and more about knowing, precisely, how much house you can handle. (For the full market picture, see our guide to buying a home in mid-2026.)
Run your own numbers before anyone else does
A lender's approval tells you what they'll lend, not what you can comfortably repay — and those are different numbers. Underwriting sees gross income and reported debts; it doesn't see childcare, an aging car, a thin emergency fund, or the retirement contributions you'd quietly pause to make a bigger payment fit. So before you talk to an agent or a loan officer, build the budget yourself: take-home pay, every debt payment, fixed expenses, and a brutally honest accounting of discretionary spending. A mortgage calculator turns those inputs into a price range in minutes. The discipline is in the inputs.
The 28/36 rule, stated correctly
The classic affordability guideline is the 28/36 rule: keep total housing costs at or below 28% of gross monthly income, and all debt payments combined — housing plus car loans, student loans, credit cards — at or below 36%. Two notes. First, housing costs means the whole payment: principal, interest, property taxes, homeowners insurance, HOA dues, and mortgage insurance if you put down less than 20%. Second, a lender may approve you well above these lines. That isn't a green light; the approval protects the lender's downside, not your lifestyle.
Rates set the price of every borrowed dollar
At mid-6s rates, the interest rate does as much to set your range as your income does: the higher the rate, the smaller the loan a given monthly payment can carry. That's exactly why affordability tightened so sharply as rates climbed to their late-2023 peak near 8%. Rerun your numbers whenever rates move meaningfully, and anchor expectations to where the market actually is — our 2026 mortgage rate outlook tracks it — not to a rate you remember from a few years back.
Preapproval is not a rate lock
Get preapproved early: it verifies your numbers, shows you how lenders see you, and makes your offers credible. But correct one persistent piece of old advice — a preapproval does not lock in an interest rate while you shop. A rate lock is a separate, later step, made once you have a specific loan on a specific home in motion. Until then, the figure on your preapproval letter floats with the market, so budget with a cushion above today's quote rather than at your absolute ceiling.
The practice payment: try the mortgage on first
The best affordability test is one no calculator can run: live on the payment before you sign for it. For a few months, keep paying rent as usual — and every month, move the difference between your rent and the full projected house payment (principal, interest, taxes, insurance) into savings. If the transfer barely registers, your target price is realistic. If you're raiding the account back by the 20th, you just learned that lesson free of charge, before a lender was involved.
The side benefit is real money. Months of practice payments become down payment, closing-cost cushion, or the house's first emergency fund — and parked in the right place they earn their keep, since top high-yield savings accounts pay around 4% in 2026.
Handle, not qualify
How much can I borrow? is the lender's question. How much can I handle? is yours — and it's the one that decides whether the house becomes a comfort or a weight. Build the budget, apply 28/36 honestly, practice the payment for a season, and walk into preapproval already knowing your number.