How Much House Can I Afford on $100K Salary?
On a $100,000 annual salary, the conventional 28 percent front-end DTI guideline limits your monthly housing payment to approximately $2,333. After subtracting property taxes, homeowner insurance, and any PMI, that budget supports a home price that varies widely with interest rates and existing debts. Enter your full financial picture above for a personalised answer.
Your finances
$0
at the conventional 28/36 guideline — $0 a month
Three answers, not one- Affordable · 28/36
- $0
- Monthly at that price
- $0.00
- Stretch · 31/43
- $0
- Monthly at that price
- $0.00
- Aggressive · 43% ceiling
- $0
- Monthly at that price
- $0.00
—
Affordable is the long-standing 28/36 guideline. Stretch matches FHA's manual underwriting benchmark. Aggressive is the 43% limit for a general qualified mortgage — a legal ceiling, not advice. Sources below.
What $100K Gross Income Allows Under DTI Rules
Lenders apply two DTI ratios. The front-end ratio — housing costs divided by gross monthly income — caps at 28 percent under conventional guidelines. On $100,000 gross, monthly income is $8,333, yielding a maximum housing payment of approximately $2,333 including principal, interest, taxes, insurance, and PMI.
The back-end ratio adds all recurring debts — car loans, student loans, minimum credit-card payments — and caps at 36 percent. If you carry $500 per month in existing debt, the back-end limit allows $3,000 total, leaving $2,500 for housing and staying close to the front-end cap. At $1,000 in monthly debts, the back-end ratio becomes the binding constraint and your housing budget shrinks to $2,000.
FHA guidelines widen the window — 31 percent front-end and 43 percent back-end — and the qualified-mortgage ceiling is 43 percent. Higher ratios expand the purchase range but commit a larger share of gross income to debt obligations.
Turning the Payment Budget Into a Home Price
With approximately $2,333 available for housing, a realistic deduction for taxes and insurance — commonly $400 to $600 combined depending on location — leaves roughly $1,733 to $1,933 for principal and interest. At an illustrative 7 percent rate on a 30-year term, that range supports a loan of approximately $260,000 to $290,000.
Down payment converts the loan into a purchase price. A 10 percent down payment on a $280,000 loan means a home around $311,000. With 20 percent down, the same loan reaches approximately $350,000 and avoids PMI, which frees more of the $2,333 for principal and interest.
These figures shift meaningfully with rates. A single percentage-point drop in rate can add roughly $30,000 in borrowing power at the same monthly payment. The income-needed calculator runs this math in reverse if you already have a target price in mind.
DTI limits shown are conventional (28/36), FHA (31/43), and the QM ceiling (43). Individual lender overlays may differ.