How to budget for a first home in 5 steps.
Last verified May 23, 2026The direct answer. To budget for a first home, do five things in order: calculate your true price ceiling using the 28/36 rule (PITI under 28 percent of gross income, total debt under 36 percent), build a down payment of 10 to 20 percent plus 3 to 6 months of mortgage payments in reserves, factor closing costs at 2 to 5 percent of the purchase price, model the all-in monthly cost (mortgage, taxes, insurance, HOA, utilities, maintenance), and stress-test the budget at 1.5x the worst case. A $400,000 home in 2026 typically requires $60,000 to $100,000 in cash at closing and a household gross income of roughly $115,000 to $130,000 for the budget to hold.
Calculate your true price ceiling with the 28/36 rule.
Lenders qualify you using two ratios. Front-end: monthly housing cost (PITI = principal, interest, taxes, insurance) under 28 percent of gross monthly income. Back-end: total monthly debt (PITI plus auto, student, credit card minimums) under 36 percent. A $115,000 gross household income (about $9,600 per month) supports roughly $2,700 PITI per month, which is a $400,000 to $450,000 home at 2026 rates with 10 percent down.
Build the down payment plus 3 to 6 months reserves.
Standard down payment ranges: 3.5 percent for FHA, 3 to 5 percent for conventional with PMI, 20 percent for conventional without PMI. On a $400,000 home, that is $14,000 to $80,000. Plus 3 to 6 months of mortgage payments held in a HYSA as reserves (lenders sometimes require this and life always requires it). Cash you need at closing is the down payment plus closing costs plus reserves.
Factor closing costs at 2 to 5 percent of the price.
Closing costs include lender origination, title insurance, escrow, recording fees, attorney fees, prepaid taxes and insurance, and the appraisal. On a $400,000 home, plan for $8,000 to $20,000. Some closing costs can be rolled into the loan or covered by seller concessions in a buyer's market. The buyer's agent commission is typically paid by the seller; confirm this for your local market.
Model the all-in monthly cost.
PITI is only part of the bill. Add HOA dues if applicable ($100 to $500+ per month), utilities (often $200 to $400 per month, higher than a typical rental), and a 1 percent of home value per year maintenance reserve ($333 per month on a $400,000 home). For a $400,000 home in 2026 at a 7 percent rate with 10 percent down, all-in monthly cost typically runs $3,300 to $3,800.
Stress-test the budget at 1.5x the worst case.
Plan for the things lenders do not stress-test. Job loss for 6 months. A roof replacement at $15,000 in year 2. Property tax reassessment up 15 percent. Homeowner insurance jumping in a high-risk area. If your budget breaks under any one of these, you are buying too much house. The 28/36 rule is the qualification ceiling. Your sustainable purchase is often 10 to 20 percent below the qualification ceiling.
Five things to verify this week.
- Calculate your 28 percent and 36 percent monthly debt limits from your gross income.
- Save the down payment plus 3 to 6 months of reserves in a high-yield savings account.
- Budget 2 to 5 percent of the purchase price for closing costs.
- Model the all-in monthly cost including HOA, utilities, and 1 percent annual maintenance.
- Stress-test the budget at 1.5x the worst case (job loss, major repair, tax increase).
Questions readers ask most often.
What is the 28/36 rule for home buying?
The 28/36 rule is the lender's qualification ratio. Front-end: monthly housing cost (PITI = principal, interest, property taxes, insurance) should be under 28 percent of gross monthly income. Back-end: total monthly debt (PITI plus auto loans, student loans, credit card minimums) should be under 36 percent. Lenders may approve borrowers above these ratios; the rule is the conservative comfort zone.
How much down payment do I need to buy a first home?
Minimum down payments in 2026 are 3.5 percent for FHA loans, 3 to 5 percent for conventional loans with private mortgage insurance (PMI), and 20 percent for conventional loans to avoid PMI. VA loans for eligible veterans allow zero down. The right down payment for most first-time buyers is 5 to 10 percent, balancing the cash crunch against PMI costs.
What are typical closing costs for a first home?
Closing costs typically run 2 to 5 percent of the purchase price. On a $400,000 home, plan for $8,000 to $20,000. The biggest components are lender origination fees, title insurance, escrow setup, prepaid property taxes and homeowner insurance, and the appraisal. Some closing costs can be rolled into the loan or covered by seller concessions.
How much income do I need to buy a $400,000 home?
At a 7 percent mortgage rate with 10 percent down, a $400,000 home generates a PITI of about $2,700 per month. Using the 28 percent front-end ratio, that requires roughly $9,650 in gross monthly income ($115,000 per year). With significant other debt, the required income climbs higher.
What is the true monthly cost of owning a home?
True monthly cost is PITI (principal, interest, taxes, insurance) plus HOA dues (if any) plus utilities plus a maintenance reserve of 1 percent of home value per year. On a $400,000 home in 2026, the all-in monthly cost typically runs $3,300 to $3,800, versus PITI alone of $2,700 to $3,000.
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Source: True North by Competitive Compass. "How To Budget For A First Home In 5 Steps". Published 2026-05-23.
URL: https://competitive-compass.com/true-north/how-to-budget-for-a-first-home-in-5-steps.html