With a $300k annual salary (about $25,000/month before taxes) and typical debts, you can afford a home priced around $1,389,610 using standard lender guidelines — a 36% debt-to-income ratio, 20% down payment, and a 30-year fixed rate of 6.75%. That puts your total housing payment (principal, interest, property tax, and insurance) at about $8,700/month.

At $300k, lender DTI limits are less likely to be your binding constraint — affordability becomes more about how much of your budget you want committed to housing. The conservative 28% DTI ceiling ($1,066,445) may feel more appropriate than stretching to 43%, because at this income the marginal dollars above the conservative payment compound aggressively if invested instead. The gap between conservative and stretch is $447,292 in home price — weigh that against decades of index-fund returns.

The single biggest lever on affordability isn't your income — it's the interest rate. At 5.5% you could afford roughly $1,551,699, while at 7.5% the same salary buys only $1,304,272. That's a $247,427 swing from rate alone. Comparing quotes from at least three lenders is the single highest-ROI hour in the entire home-buying process.

The $300k tier — top 1-2% of individual incomes — is where this page series honestly inverts. The DTI tables above technically report a max price above $1M, but almost no one at $300k shops from a DTI table; they shop from a net-worth and cash-flow plan, and the mortgage is a financing decision rather than a permission slip. The searchers landing here skew toward two profiles: newly-arrived high earners (recently promoted, post-IPO, new attending physicians) calibrating what's normal, and dual-earner households summing to $300k who very much do live within DTI constraints.

For the newly-arrived: the classic error at this tier is scaling housing to income the moment income arrives. New attending physicians are the canonical case — emerging from residency into $300k+ with minimal savings and often large student balances — which is exactly why physician loan programs exist (0-10% down, no PMI, student debt treated leniently). They're genuinely useful products, and simultaneously the mechanism by which a first-year attending ends up with a $1M mortgage before their first retirement contribution. Program availability isn't a recommendation.

For everyone at this tier: past roughly $750k of mortgage debt, marginal borrowing loses its tax subsidy entirely (interest above the IRS acquisition-debt cap is simply nondeductible), and the true comparison becomes 6.75% guaranteed cost versus your portfolio's expected return, with liquidity and peace of mind as the tiebreakers. Households at $300k who cap the mortgage near the deductibility line and deploy the rest of their borrowing capacity nowhere at all tend to report the least financial stress — which, at the top of the income distribution, is arguably the entire point.