Data Notice: Mortgage rates, home prices, and program limits cited in this article reflect projected 2026 estimates. Housing markets vary significantly by region. Confirm current rates and programs with a licensed mortgage lender.

Buying Your First Home: Down Payment, PMI, Closing Costs, and DTI Ratios

A first home purchase involves at least a dozen financial variables that interact in ways most buyers do not anticipate. The down payment gets all the attention, but closing costs (2-5% of the loan), private mortgage insurance ($100-$300+/month), and the debt-to-income ratio that determines your maximum loan are equally important. This guide breaks down every cost, threshold, and decision point so you know exactly what you need before making an offer.

The True Cost of Buying a Home

Using the national median home price of approximately $420,000 in 2026:

Cost Category	Amount	When It’s Due
Down payment (10%)	~$42,000	At closing
Closing costs (3%)	~$12,600	At closing
Home inspection	~$400 - $600	Before closing
Appraisal	~$500 - $700	Before closing
Moving expenses	~$1,500 - $5,000	Move-in day
Immediate repairs/furnishing	~$2,000 - $10,000	First month
Total cash needed	~$59,000 - $71,000

Many first-time buyers focus solely on the down payment and are blindsided by the additional $15,000-$30,000 needed at closing and in the first month.

Down Payment: How Much Do You Actually Need?

Loan Type	Minimum Down Payment	PMI Required?	Typical Buyer
Conventional	3% (~$12,600)	Yes, until 20% equity	Good credit (680+), moderate savings
FHA	3.5% (~$14,700)	Yes, for life of loan*	Lower credit (580+), first-time buyers
VA	0%	No	Active military/veterans
USDA	0%	No (but guarantee fee)	Rural area buyers, income limits apply
Conventional 20%	20% (~$84,000)	No	High savings, want lowest payment

*FHA loans originated with less than 10% down require MIP (mortgage insurance premium) for the entire loan term. With 10%+ down, MIP drops off after 11 years. This is a significant disadvantage compared to conventional PMI, which drops at 20% equity.

First-time buyer programs: Many states and municipalities offer down payment assistance grants, forgivable loans, and below-market rate mortgages. Check your state’s housing finance agency.

Private Mortgage Insurance (PMI)

PMI protects the lender (not you) if you default. It applies to conventional loans with less than 20% down payment.

How much PMI costs:

Credit Score	PMI Rate (annual, % of loan)	Monthly Cost on $378,000 Loan
760+	~0.25% - 0.40%	~$79 - $126
720-759	~0.35% - 0.55%	~$110 - $173
680-719	~0.50% - 0.80%	~$158 - $252
640-679	~0.75% - 1.10%	~$236 - $346

How to remove PMI:

Automatic termination: Lender must remove PMI when your loan balance reaches 78% of the original purchase price
Borrower-initiated cancellation: Request removal at 80% LTV with a good payment history
Refinance: If your home has appreciated, refinancing at a new appraised value can eliminate PMI immediately
Pay extra principal: Accelerate payments to reach 80% LTV faster

Strategy: If you are close to 20% down, putting slightly more down can save $100-$300/month in PMI for years. On a $400,000 home, the difference between 15% and 20% down is $20,000, but avoiding PMI at ~$200/month saves $2,400/year.

Closing Costs: The Hidden Expense

Closing costs typically run 2-5% of the loan amount. On a $378,000 loan, expect approximately $7,500-$19,000.

Closing Cost Item	Typical Range
Loan origination fee	0.5% - 1.0% of loan
Appraisal	$500 - $700
Title search and insurance	$1,000 - $3,000
Attorney/settlement fees	$500 - $2,000
Recording fees	$100 - $500
Prepaid property taxes	2-6 months
Prepaid homeowner’s insurance	12 months
Escrow reserves	2-3 months of taxes/insurance
Credit report	$30 - $50
Survey	$300 - $600

Negotiation opportunity: Sellers can contribute toward closing costs (seller concessions), typically up to 3-6% of the sale price depending on the loan type. In a buyer’s market, ask for 2-3% in seller concessions to reduce your out-of-pocket costs.

Lender credits: Some lenders offer to cover part of your closing costs in exchange for a higher interest rate. This trade makes sense if you plan to refinance or sell within 5-7 years.

Debt-to-Income Ratio (DTI): Your Borrowing Limit

DTI is the primary factor determining how much you can borrow. It compares your monthly debt payments to your gross monthly income.

Two DTI ratios matter:

Ratio	Formula	Maximum (Conventional)	Maximum (FHA)
Front-end (housing)	(Mortgage + taxes + insurance + PMI + HOA) / Gross income	28%	31%
Back-end (total debt)	(All monthly debt payments) / Gross income	36-45%*	43-50%*

*Higher back-end ratios are possible with compensating factors: high credit score, large cash reserves, stable employment history.

Example: Household gross income of $10,000/month.

Debt	Monthly Payment
Proposed mortgage (PITI + PMI)	$2,500
Student loans	$400
Car payment	$350
Minimum credit card payments	$150
Total	$3,400

Front-end DTI: $2,500 / $10,000 = 25% (under 28% limit)
Back-end DTI: $3,400 / $10,000 = 34% (under 36% standard)

Reducing your DTI before applying:

Pay off credit cards and car loans
Increase income (side job, raise)
Do not open new credit lines or make large purchases before closing
Pay down student loans or switch to an IDR plan with a lower monthly payment

Monthly Homeownership Cost Breakdown

The mortgage payment is not your total housing cost. Budget for all of these:

Item	Monthly Range ($420K Home, 10% Down)
Mortgage principal and interest (6.5% rate, 30-year)	~$2,390
Property taxes	~$350 - $700 (varies by state)
Homeowner’s insurance	~$150 - $250
PMI	~$100 - $250
HOA (if applicable)	$0 - $500
Maintenance and repairs (1% of home value/year)	~$350
Utilities (increase vs. renting)	~$100 - $200
Total	~$3,440 - $4,590

The 1% maintenance rule: Budget approximately 1% of your home’s value per year ($4,200 on a $420,000 home) for maintenance and repairs. Older homes may require 1.5-2%.

Renting vs. Buying: The Break-Even Calculation

Buying is not always financially superior to renting. The break-even point depends on how long you stay:

Factors favoring buying: Long timeline (7+ years), stable job/location, rising rents, building equity, mortgage interest deduction (if itemizing), potential appreciation.

Factors favoring renting: Short timeline (under 5 years), high-cost market, job mobility, avoiding maintenance and transaction costs, investing the down payment difference.

Rule of thumb: If you plan to stay less than 5 years, renting is often cheaper. Between 5-7 years is a gray zone. Beyond 7 years, buying typically wins — though local market conditions can shift this significantly.

Key Takeaways

Total cash needed for a first home extends well beyond the down payment — budget 5-8% of the home price for closing costs and initial expenses on top of the down payment
PMI on conventional loans ranges from ~$80-$350/month and drops off at 80% equity — FHA mortgage insurance stays for the life of the loan if you put less than 10% down
DTI ratios (28% front-end, 36-45% back-end) determine your maximum borrowing amount — pay down debt before applying
The monthly cost of homeownership is typically 30-50% more than the mortgage payment alone when accounting for taxes, insurance, PMI, maintenance, and utilities
First-time buyer programs in most states offer down payment assistance, reduced rates, and lower closing costs

Next Steps

Use the Mortgage Affordability Calculator to determine your price range
Review Debt Payoff Strategies to lower your DTI before applying
Read Tax Selling Your Home Exclusion for the tax implications of your eventual sale
Explore Build an Emergency Fund to ensure you have reserves after closing

This content is for educational purposes only and does not constitute financial, tax, or legal advice. Consult a licensed mortgage lender and real estate professional for your specific situation.

Sources

CFPB — Buying a House: What You Need to Know — accessed April 2026
IRS — Mortgage Interest Deduction — accessed April 2026
HUD — First-Time Homebuyer Programs — accessed April 2026
Freddie Mac — Mortgage Rates — accessed April 2026
SSA.gov — Retirement Benefits — accessed April 2026