Mortgage
Also known as: Home loan
A loan secured by real estate, used to finance the purchase or refinance of a home. The largest single loan most US households will ever take, typically with a 15- or 30-year amortization, fixed or adjustable rate, and various government-backed or conventional structures.
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A mortgage is a secured loan where the borrower's home serves as collateral. The lender has a recorded lien on the property, allowing foreclosure in the event of sustained non-payment. The structural features of the US mortgage market — the 30-year fixed-rate mortgage, the secondary market in mortgage-backed securities, government-backed mortgage insurance, and the federal regulatory framework — are distinctive enough that mortgage shopping in the US is meaningfully different from mortgage shopping in most other developed countries.
US mortgage products span several structural variants. The 30-year fixed-rate mortgage is the default product and the largest by origination volume; it provides rate certainty over the loan's life, with monthly payments that are mostly interest in early years and mostly principal in later years. The 15-year fixed-rate mortgage trades higher monthly payments for substantially lower total interest and faster equity accumulation. Adjustable-rate mortgages (ARMs) carry a lower initial rate that adjusts on a stated schedule (5/1 ARM, 7/1 ARM, 10/1 ARM) after the introductory period; the rate adjusts to a stated index plus a margin, with periodic and lifetime caps. ARMs make sense for borrowers planning to sell or refinance before the adjustment period, with discipline about that assumption.
The categories of mortgage product by government backing matter. Conventional mortgages are not backed by a federal agency and follow Fannie Mae or Freddie Mac guidelines; they typically require 5–20% down payment and private mortgage insurance (PMI) if the down payment is under 20%. FHA mortgages are insured by the Federal Housing Administration, allow down payments as low as 3.5% with somewhat lenient credit standards, and carry mortgage insurance premiums (MIP) that last the life of the loan for most borrowers. VA mortgages, available to qualifying veterans and active military, allow zero down payment, no PMI/MIP, and competitive rates — a substantial benefit for eligible borrowers. USDA mortgages cover rural properties with similar zero-down terms. Jumbo mortgages exceed the conforming loan limit and follow non-Fannie/Freddie guidelines, often with stricter qualifying standards.
Mortgage shopping is high-leverage. The interest rate differential between competitive lenders can be 0.25% to 0.50% on the same borrower profile, which translates to tens of thousands of dollars over a 30-year loan. The methodology recommended in the loans hub: get rate quotes from at least three lenders within a 15-day window (so the multiple hard pulls count as one inquiry for credit scoring), include at least one bank, one credit union, and one online lender, and compare APR (which bundles in origination fees and points) rather than rate. The methodology delivers more savings than picking the "right" lender from any static ranking.
- How to remove private mortgage insurance (PMI) from your mortgage The four removal paths under the federal Homeowners Protection Act, BPO appraisal cost math, FHA MIP differences, and when refinancing out is the better move.
- HELOC vs cash-out refinance — which home equity tap fits the spend How each product works mechanically, the rate-environment effect on the choice, the tax-deduction interaction, and three worked-example scenarios.
- What a mortgage pre-approval actually proves — and what it does not What a US mortgage pre-approval actually verifies, how long the letter lasts, how it affects your credit, and how it differs from prequalification.
- How to shop a US mortgage — lender comparison without credit damage The 45-day rate-shopping window, the Loan Estimate disclosure, points break-even math, and the lender-by-lender protocol that saves $20K+ over the loan.
- FHA vs Conventional vs VA — which program fits which household Side-by-side mechanics: down payment, mortgage insurance, credit score floors, loan limits, and the household profile that makes each program the right pick.
- ARM (Adjustable-Rate Mortgage) A mortgage with an interest rate that adjusts periodically based on a stated index plus a margin, typically after an introductory fixed-rate period of 5, 7, or 10 years. Lower initial rate than comparable fixed mortgages, with rate-reset risk on a schedule.
- LTV (Loan-to-Value) The ratio of a loan's principal balance to the appraised value of the underlying collateral, expressed as a percentage. The primary determinant of PMI eligibility, mortgage refinance access, and rate tiering for most secured loan products.
- Refinance Replacing an existing loan with a new one — typically to lower the rate, change the term, switch from variable to fixed rate, or extract equity (cash-out refinance). Subject to closing costs that must be recouped through the rate savings to make the refi worthwhile.
Educational content only. finbarrow is an independent editorial publication, not a licensed financial advisor, broker, tax preparer, or attorney. Verify rates and terms with the issuer or relevant regulator. See disclaimers.