Affordability Calculator
Estimate a comfortable mortgage amount based on your income, debts, and down payment.
Factors That Impact Affordability
Several financial variables determine what you can realistically spend on a home. Your gross earnings set the ceiling, while existing obligations like car notes or student loans eat into that ceiling from below. The size of your upfront cash contribution matters too — a larger down payment shrinks the loan balance and often unlocks better terms from lenders.
Beyond those core numbers, market conditions play a role. Even a half-point swing in mortgage rates can shift your buying power by tens of thousands of dollars. That's why our advisors at C&S Finance Group recommend running this calculator under multiple rate scenarios so you have a realistic range rather than a single figure.
How Much House Can You Afford with Your Salary?
Your pre-tax earnings are the single biggest lever in the affordability equation. Lenders look at gross monthly income — the number on your paycheck before withholdings — to gauge repayment capacity. If you're purchasing jointly, add every co-borrower's salary to the total.
A widely used benchmark is to keep total housing costs (mortgage principal, interest, taxes, and insurance) at or below 30% of that gross figure. The table below applies this guideline at the current rate you've entered above, with estimated allowances for taxes, insurance, and PMI. Adjust the advanced settings to refine the output for your specific situation.
| Salary | Gross Monthly | Down Payment | House Affordability |
|---|---|---|---|
| $90K | $7,500 | $13,500 | $344,557 |
| $100K | $8,333 | $15,000 | $384,636 |
| $200K | $16,667 | $30,000 | $785,427 |
| $300K | $25,000 | $45,000 | $1,186,218 |
| $400K | $33,333 | $60,000 | $1,587,009 |
| $500K | $41,667 | $75,000 | $1,987,800 |
| $600K | $50,000 | $90,000 | $2,388,592 |
| $700K | $58,333 | $105,000 | $2,789,383 |
| $800K | $66,667 | $120,000 | $3,190,174 |
| $900K | $75,000 | $135,000 | $3,590,965 |
How to Calculate Affordability
This calculator gives you two approaches: start from your earnings and let the math work backward to a price, or plug in your ideal monthly outlay and see what that buys. Either way, toggle the advanced panel to fine-tune tax rates, insurance premiums, and association fees so the result reflects your actual market.
Below is a breakdown of every input and why it matters.
Annual Income
Enter your total household earnings before any deductions — the number typically found on a W-2 or annual salary letter. Joint applicants should combine all incomes. This figure is the starting point lenders use to calculate how much monthly obligation you can carry.
Total Monthly Debts
Add up every recurring payment that shows on your credit report: auto financing, minimum credit card bills, student loan installments, personal loans, and any active child support or alimony. Don't include utilities or subscriptions — lenders only count obligations reported to credit bureaus.
Down Payment
This is the cash you bring to closing. Putting more money down reduces the loan balance, shrinks your monthly bill, and may help you avoid private mortgage insurance entirely. While 20% is the classic target, many programs accept as little as 3–5% for qualified borrowers.
Debt-to-Income Ratio (DTI)
DTI is simply your total monthly obligations divided by gross monthly pay, expressed as a percentage. It tells lenders how stretched your budget already is. We default to 36% — a threshold many conventional lenders prefer — but you can raise or lower it in the advanced panel to match your personal risk tolerance or a specific loan program's limits.
Interest Rate
The annual cost of borrowing, quoted as a percentage. Even small differences compound dramatically over a 30-year term: a quarter-point reduction on a $300,000 loan saves roughly $15,000 in lifetime interest. Rates depend on credit profile, loan type, market conditions, and how much you put down.
Loan Term
How many years you'll take to repay. A 30-year mortgage spreads payments out for the lowest monthly cost but the highest total interest. Shortening to 15 or 20 years raises the monthly figure but dramatically cuts the total you pay the bank. Choose the timeline that balances cash flow with long-term savings.
Property Tax
Local governments levy an annual tax on real estate, usually calculated as a percentage of assessed value. Rates swing widely — from well under 1% in some states to over 2% in others — so plugging in your county's actual rate is important for an accurate estimate. We default to 1.2% but you should adjust this in the advanced panel.
Homeowner's Insurance (HOI)
Lenders require coverage that protects the property against fire, weather damage, theft, and liability. Premiums depend on location, construction type, coverage limits, and your claims history. A rough rule of thumb is about $35–$40 per month for every $100,000 of home value, but always get a personalized quote from an insurance provider.
Private Mortgage Insurance (PMI)
If your down payment is below 20%, most conventional lenders add PMI to your monthly bill. This insurance protects the lender — not you — in case of default. Once your equity reaches 20%, you can typically request removal. Our calculator automatically factors PMI in when the down payment is under 20% of the home price.
Homeowner's Association (HOA) Dues
Condos, townhomes, and many planned communities charge monthly or quarterly fees for shared maintenance — landscaping, pools, exterior upkeep, and sometimes utilities. These dues are a fixed addition to your housing cost and can range from under $100 to well over $500 per month depending on the community and its amenities.
How Much Mortgage Can I Qualify For?
Running this calculator gives you a solid estimate, but only a lender can tell you the exact figure. During the pre-qualification process, a loan officer reviews your income documentation, credit history, and existing debts to issue a letter stating the maximum amount they're willing to finance. That letter also strengthens your position with sellers, signaling that a professional has already vetted your finances. C&S Finance Group can connect you with trusted lending partners to start this process.
Most Affordable Markets for Homebuyers
Not all housing markets are created equal. In some metros, a median-income household can comfortably cover a mortgage on a typical home, while in others the math barely works even at well-above-average salaries. The table below highlights ten of the largest U.S. metros where homeownership remains most accessible, ranked by the share of local income that goes toward a mortgage payment.
| Market | Share of Income on Mortgage | Home Value Index |
|---|---|---|
| Pittsburgh, PA | 24% | $208,583 |
| St. Louis, MO | 27% | $205,141 |
| Indianapolis, IN | 27% | $275,639 |
| Birmingham, AL | 27% | $247,509 |
| Oklahoma City, OK | 28% | $230,466 |
| Cincinnati, OH | 28% | $281,887 |
| Detroit, MI | 28% | $248,126 |
| Cleveland, OH | 29% | $228,140 |
| Louisville, KY | 29% | $255,206 |
| Memphis, TN | 30% | $233,885 |
Frequently Asked Questions About Affordability
How much house can I afford?
A practical starting point is the 36/43 guideline. Keep your housing costs — principal, interest, taxes, and insurance — below 36% of gross monthly pay. Your combined monthly obligations (housing plus all other debts) should stay under 43%. So if you earn $5,000 per month before taxes, aim to keep your mortgage payment under $1,800 and total debts under $2,150.
How much house can I afford with an FHA loan?
FHA-backed mortgages use a slightly different yardstick — typically 31% of gross income for housing and 43% for total debt. The trade-off is accessibility: you may qualify with a credit score as low as 580 and a down payment of just 3.5%. Keep in mind that FHA loans carry both an upfront insurance premium (rolled into closing costs) and an ongoing annual premium baked into every monthly payment, both of which reduce your effective buying power a bit compared to a conventional loan at the same rate.
How much house can I afford with a VA loan?
Eligible veterans and active-duty service members can access VA-guaranteed loans, which remove two of the biggest barriers to homeownership: there's no mandatory down payment and no monthly PMI. A one-time funding fee applies at closing (often financeable into the loan), but the absence of PMI and the typically competitive interest rates mean VA borrowers can often afford a higher purchase price on the same income compared to conventional or FHA financing.
What is the 28/36 rule?
It's a budgeting heuristic: spend no more than 28% of gross monthly earnings on housing and cap all debt payments — housing included — at 36%. It isn't a hard lending requirement, but it gives first-time buyers a useful guardrail. Staying within these bounds generally leaves enough room for savings, emergencies, and day-to-day living expenses.
How does my credit score affect affordability?
Credit scores influence affordability indirectly but powerfully. A stronger score unlocks lower interest rates, and even a modest rate reduction translates into thousands of dollars less in interest over the life of the loan — effectively raising the price point you can comfortably target. Before applying, review your credit reports for errors, pay down revolving balances, and avoid opening new accounts. A few months of credit hygiene can meaningfully expand your budget.
Should I put 20% down?
Twenty percent is a solid benchmark because it eliminates PMI, immediately gives you meaningful equity, and often secures the best available rate. That said, it isn't always realistic — especially for first-time buyers in high-cost markets. Conventional loans can go as low as 3% down, and FHA allows 3.5%. The trade-off is a higher monthly payment (due to PMI and a larger loan balance), so weigh the long-term cost against how quickly you want to get into a home. Our team at C&S Finance Group can help you model both scenarios.