How much house can I afford on a 70k salary? Using the standard 28/36 debt-to-income rule, $70,000 a year caps your housing payment at about $1,633 a month. With a modest $350 monthly car payment, a 6.75% mortgage rate, and typical taxes and insurance, that budget supports a home price of roughly $201,500 at 3% down to $214,700 at 10% down — and, counterintuitively, jumping to 20% down can push that ceiling past $255,000 because it eliminates PMI. This guide runs every number and shows exactly why down payment size changes your max price by more than the down payment itself.
How much house can I afford on a $70K salary? The 28/36 math
A $70,000 salary is $5,833.33 a month before taxes. The 28/36 rule sets two ceilings: your housing payment (principal, interest, taxes, insurance, and PMI) can't exceed 28% of that — $1,633.33 — and your total debt payments, housing included, can't exceed 36% — $2,100.00. Whichever ceiling produces the smaller housing number is the one that actually governs your budget.
Say you carry a $350 monthly car payment and nothing else. Subtract that from the 36% ceiling: $2,100.00 − $350 = $1,750.00 available for housing under the back-end rule. Compared with the $1,633.33 front-end cap, the front-end number is smaller, so it wins — your real housing budget is $1,633.33 a month. Notice that any debt under about $466.67 a month doesn't change this outcome at all, because the back-end cap only starts binding once it drops below $1,633.33.
What that $1,633 a month actually buys: down payment comparison
The same $1,633.33 monthly budget buys a different home price depending on your down payment, because a bigger down payment shrinks the loan and — once you cross 20% down — removes private mortgage insurance (PMI) entirely. The breakdown below assumes a 6.75% fixed 30-year rate, 1.1% annual property tax, 0.35% annual homeowners insurance, and 0.75% annual PMI on the loan balance whenever the down payment is under 20% — illustrative assumptions for September 2026, not a specific lender quote, all applied to the same $1,633.33 ceiling. It also assumes no HOA dues; a $250 monthly HOA fee would eat directly into that same budget and cut the 10%-down max price by roughly $33,000. None of these figures include closing costs, which typically run another 2-5% of the purchase price — roughly $4,000 at the 3%-down price tier to about $12,800 at the 20%-down tier — and are due in cash at the table on top of the down payment.
Read down the list and the pattern is clear: the home price you can afford doesn't grow smoothly with your down payment. It jumps once PMI disappears, because the dollars that used to buy a PMI premium get freed up — most of them into loan capacity, the rest into the taxes and insurance on a pricier home.
- 3% down (~$6,045 down payment, before closing costs): max home price ≈ $201,500 — $1,268 P&I + $185 taxes + $59 insurance + $122 PMI ≈ $1,633/month.
- 5% down (~$10,255): max home price ≈ $205,100 — $1,264 P&I + $188 taxes + $60 insurance + $122 PMI ≈ $1,633/month.
- 10% down (~$21,470): max home price ≈ $214,700 — $1,253 P&I + $197 taxes + $63 insurance + $121 PMI ≈ $1,633/month.
- 20% down (~$51,065): max home price ≈ $255,300 — $1,325 P&I + $234 taxes + $74 insurance + $0 PMI (none required) ≈ $1,633/month.
Why 20% down buys more house than a proportional jump
Going from 10% down to 20% down roughly doubles the cash you put down — from about $21,470 to about $51,065, a $29,597 increase. A simple guess would say that should raise the affordable home price by a similar, modest amount. Instead it rises from $214,700 to $255,300, a $40,643 jump — about $1.37 in extra purchasing power for every $1 of extra down payment. Below 20% down, the relationship is weaker: going from 5% to 10% down buys only about $0.86 in extra home price for every extra $1 of down payment.
The reason for the jump is PMI. Below 20% down, part of every monthly dollar you have goes to a PMI premium that buys you nothing toward the house — at 10% down, $121 of the $1,633 budget is PMI, dead weight that doesn't reduce principal or build equity. Cross the 20% line and that $121 is redistributed: about $72 flows into principal and interest, which supports roughly $11,000 more loan, while the remaining $49 covers the higher property taxes and insurance that come with a pricier home. If you're close to 20% down, stretching to reach it is one of the few moves that increases your affordable price for reasons beyond the extra cash itself.
How to raise your $70K affordability number
On a $70K salary specifically, remember that debt only starts costing you housing budget once it crosses $466.67 a month — below that line, paying down a car loan or credit card does nothing for your number, because the front-end cap is already the binding one. Above that line, every dollar of debt you eliminate adds a dollar back to your housing budget under the 36% cap. A lower interest rate works regardless of which ratio binds: dropping from 6.75% to 6.0% on the same $1,633.33 budget raises the affordable home price at 10% down from $214,700 to about $227,900, a gain of roughly $13,200 from a rate change alone.
Income growth helps directly too — every extra $1,000 in annual salary adds $23.33 to the 28% housing ceiling ($1,000 ÷ 12 × 28%), which translates to roughly $2,900 to $3,650 of extra home-buying power depending on your down payment tier. If debt above $466.67 is your binding constraint, FHA loans offer more room: per HUD Handbook 4000.1, FHA uses a 31/43 guideline rather than 28/36, and permits ratios up to 40/50 for manually underwritten loans with a 580-or-higher decision credit score and two or more documented compensating factors, such as verified cash reserves. A higher ratio leaves less monthly cushion if income drops or a rate resets, so treat 28/36 as the comfortable target even where a lender would approve more.
Run the numbers yourself
Frequently Asked Questions
Does having zero monthly debt raise my $70K affordability number?
No, not on its own. With a $70,000 salary, the front-end cap of $1,633.33 a month is already lower than the back-end cap even with no debt at all — so your housing budget stays at $1,633.33 whether your other debt is $0 or anything under about $466.67 a month. Debt only starts cutting your housing budget once it pushes past that threshold.
What if I have $700 a month in other debt instead of $350?
Then the back-end ratio takes over as your binding constraint. The 36% cap of $2,100 minus $700 in debt leaves only $1,400 for housing, below the $1,633.33 front-end cap. At 10% down and the same 6.75% rate, that drops your max home price from about $214,700 to about $184,000 — a roughly $30,700 swing caused by $350 more in monthly debt.
Is a bigger down payment always worth it on a $70K salary?
Reaching 20% down is disproportionately valuable because it eliminates PMI, which is why the jump from 10% to 20% down in our example added $1.37 in home price for every extra $1 of down payment. Below 20% down, extra down payment buys about $0.86 in home price for every extra $1 you put down — still a positive return, but well short of the $1.37 rate once PMI disappears.