A mortgage works, when you are buying a house, like this: a lender fronts most of the purchase price, you repay that loan in monthly installments over 15 to 30 years, and the house itself serves as collateral. The lender records a lien against the property, which means if you stop paying, they have the legal right to take the home through foreclosure. Every month your payment is split between paying down what you borrowed (principal) and paying the lender for the use of their money (interest), plus amounts set aside for property taxes and homeowners insurance. The loan ends when the balance hits zero, at which point the lien is released and you own the home free and clear.
What You Need to Qualify
Lenders weigh three things: your income against your debts, your credit history, and the cash you can put down. The federal “qualified mortgage” rule used to cap total monthly debts at 43 percent of gross monthly income. That hard cap is gone. The Consumer Financial Protection Bureau replaced it with price-based thresholds tied to how a loan’s interest rate compares to market benchmarks.1Consumer Financial Protection Bureau. Qualified Mortgage Definition Under the Truth in Lending Act (Regulation Z): General QM Loan Definition Even so, most conventional lenders still like to see your debt-to-income ratio around 43 to 45 percent or lower, with room to go higher if you bring strong credit or significant cash reserves.
For a conventional loan, you generally need a credit score of at least 620. FHA loans accept scores down to 580 with a 3.5 percent down payment, and borrowers with scores between 500 and 579 can qualify by putting down at least 10 percent.2U.S. Department of Housing and Urban Development. How Can FHA Help Me Buy a Home Conventional down payments start as low as 3 percent through Fannie Mae’s 97 percent loan-to-value programs, though anything under 20 percent down triggers mortgage insurance.3Fannie Mae. 97% Loan to Value Options
Documents to Have Ready
Expect to hand over pay stubs from the last 30 days, W-2 forms from the past two years, signed federal tax returns for the past two years, and the two most recent consecutive bank statements.4Consumer Financial Protection Bureau. Create a Loan Application Packet Self-employed borrowers often need profit-and-loss statements and business tax returns on top of that. A lender reviews everything and issues a pre-approval letter stating the maximum loan amount they are willing to offer. Pre-approval is not a final commitment, since the lender verifies everything again before funding, but it signals to sellers that you are serious.
The Main Types of Mortgage Loans
A fixed-rate mortgage locks in the same interest rate for the entire loan term. Your principal-and-interest payment never changes. An adjustable-rate mortgage starts with a lower introductory rate for a set number of years, often five or seven, then resets periodically based on a market index. The initial savings can be meaningful, but your payment could jump sharply once the rate adjusts. Most buyers choose between 15-year and 30-year terms. A 15-year loan costs far less in total interest; the monthly payment runs noticeably higher because you are compressing the same debt into half the time.
On the program side, conventional loans follow Fannie Mae and Freddie Mac guidelines. They are not directly insured by the government, which is why credit requirements are stricter. For 2026, the conforming loan limit on a single-family home in most of the country is $832,750; anything above that is a jumbo loan and comes with tighter qualification standards.5FHFA. FHFA Announces Conforming Loan Limit Values for 2026 FHA loans are insured by the Federal Housing Administration and designed for buyers with smaller down payments or less-established credit, with mandatory mortgage insurance as the trade-off.2U.S. Department of Housing and Urban Development. How Can FHA Help Me Buy a Home VA loans, backed by the Department of Veterans Affairs, let eligible service members and veterans buy with no down payment and no monthly mortgage insurance, though there is an upfront funding fee.6Veterans Affairs. Purchase Loan USDA loans serve buyers in designated rural areas with low to very-low incomes and also offer zero-down financing.7Rural Development. Single Family Housing Direct Home Loans
What Your Monthly Payment Actually Covers
Your monthly payment to the servicer gets split four ways, commonly shortened to PITI: principal, interest, property taxes, and homeowners insurance. Principal reduces what you owe on the house. Interest is what the lender charges for lending you the money, calculated as a percentage of the remaining balance. Property taxes and insurance premiums are collected monthly and held in an escrow account until those bills come due.
Most lenders require that escrow account. Federal rules limit the cushion a servicer can keep there to one-sixth of the estimated annual escrow payments.8Consumer Financial Protection Bureau. 1024.17 Escrow Accounts Each year the servicer runs an escrow analysis and adjusts your monthly amount up or down based on the latest tax assessments and insurance premiums, so even a fixed-rate payment can shift a bit from year to year. If your home is in a community with a homeowners association, those dues are not part of escrow, but lenders do count them when calculating your debt-to-income ratio.
Why Your Early Payments Barely Move the Balance
This is the part that surprises most first-time buyers. On a fixed-rate loan your total monthly payment stays the same, but the split between principal and interest shifts every month. Early on, almost all of it goes to interest. On a $135,000 loan at 4.5 percent over 30 years, the first month’s payment of $684 breaks down to about $506 in interest and only $178 toward principal. By the halfway point the split is roughly even. In the final payment, almost the entire amount goes to principal.
Interest is recalculated each month on whatever balance remains. When the balance is large, the interest charge is large. As you chip away at the principal, the interest portion shrinks and more of each payment actually pays down the house. That’s why small extra principal payments early in the loan have an outsized effect on total interest costs. An extra $100 a month in year two does far more for you than the same $100 in year twenty.
Mortgage Insurance and Why It Matters
Mortgage insurance protects the lender if you default, not you. The cost and duration depend on the loan program.
- Conventional PMI is required when your down payment is less than 20 percent. Annual premiums range from about 0.46 percent to 1.50 percent of the original loan amount, depending on your credit score and down payment. On a $300,000 loan, that works out to roughly $115 to $375 a month. You can request cancellation once you reach 80 percent loan-to-value based on the original property value, and the servicer must automatically terminate it once the balance is scheduled to hit 78 percent.9Office of the Law Revision Counsel. 12 USC 4901 – Definitions10Consumer Financial Protection Bureau. When Can I Remove Private Mortgage Insurance (PMI) From My Loan
- FHA loans carry a 1.75 percent upfront mortgage insurance premium rolled into the loan balance at closing, plus an annual premium of 0.80 to 1.05 percent. If you put down less than 10 percent, you pay annual MIP for the entire loan term. Put down 10 percent or more and it drops off after 11 years.11U.S. Department of Housing and Urban Development. Appendix 1.0 – Mortgage Insurance Premiums
- Instead of monthly insurance, VA loans charge a one-time funding fee. For first-time use with less than 5 percent down, the fee is 2.15 percent of the loan amount. Putting 5 percent down drops it to 1.50 percent, and 10 percent down lowers it to 1.25 percent. Veterans with service-connected disabilities are exempt.12Veterans Affairs. VA Funding Fee and Loan Closing Costs
These costs are easy to miss when you’re focused on the purchase price, but they add up to thousands of dollars over the first several years. Hitting 20 percent equity quickly on a conventional loan eliminates PMI and meaningfully reduces your monthly outlay.
From Application to Closing Day
Once you provide six pieces of information (your name, income, Social Security number, the property address, an estimated value, and the loan amount you want), the lender must deliver a Loan Estimate within three business days.13Consumer Financial Protection Bureau. TILA-RESPA Integrated Disclosure FAQs This standardized form shows your estimated interest rate, monthly payment, total closing costs, and the cash you need at closing. Every lender has to use the same format, which makes it easy to compare offers side by side.
After you formally apply using the Uniform Residential Loan Application, your file goes to an underwriter who verifies income, assets, debts, and employment. The lender also orders a professional appraisal to confirm the property is worth at least as much as you are borrowing. If the appraisal comes in low, you can renegotiate the price, cover the gap in cash, challenge the appraisal, or walk away. An appraisal contingency in your purchase agreement protects your earnest money deposit in that last scenario.
Federal rules require the lender to deliver a Closing Disclosure at least three business days before you sign.13Consumer Financial Protection Bureau. TILA-RESPA Integrated Disclosure FAQs This document lists the final loan terms, exact monthly payment, and every dollar you owe at closing. Compare it line by line against your earlier Loan Estimate. Significant changes, particularly to the interest rate or loan type, trigger a new three-day waiting period.
On closing day, you sign the promissory note (your promise to repay) and the deed of trust or mortgage instrument (the lien that gives the lender a security interest in the house). Closing costs typically run 2 to 5 percent of the loan amount, covering lender fees, title insurance, prepaid taxes and insurance, and government recording charges. Once the lender funds the loan and the deed is recorded with the local government, the house is yours.
What Happens If You Miss Payments
Most loans include a 15-day grace period after the due date. Miss that and late fees kick in, usually a percentage of the monthly payment. Once you are 30 days past due, the servicer can report the delinquency to credit bureaus, and even a single 30-day late mark can drop your credit score sharply. At 90 days, the servicer typically files a formal notice of default.
Federal rules prohibit a servicer from starting foreclosure until you are more than 120 days delinquent. That 120-day window exists so you have time to apply for loss mitigation options like a loan modification, forbearance agreement, or repayment plan. Once the servicer receives a complete application, it must evaluate you for every available option within 30 days and cannot move forward with a foreclosure sale while the review is pending.14eCFR. 12 CFR 1024.41 – Loss Mitigation Procedures If you are struggling, contacting your servicer early and submitting a loss mitigation application before the 120-day mark is the single most effective thing you can do to keep your home.
Paying the Loan Off Early
Federal law caps what a lender can charge for paying off a mortgage early. On a qualified mortgage, any prepayment penalty is capped at 3 percent of the outstanding balance in the first year, 2 percent in the second year, 1 percent in the third year, and zero after that.15Office of the Law Revision Counsel. 15 USC 1639c – Minimum Standards for Residential Mortgage Loans Most conventional and government-backed loans today carry no prepayment penalty at all, but confirm this in your loan documents before you sign. If a lender tries to charge a penalty after three years on a qualified mortgage, that penalty violates federal law.