Mortgage types explained

A mortgage is a long-term loan for a house, but the word 'mortgage' covers a bunch of very different products with different down payments, rate structures, and eligibility rules. Picking the right one can save tens of thousands over the life of the loan.

By loan source

• Conventional: the default — private loans that conform to Fannie Mae/Freddie Mac guidelines. Down payments from 3% (first-time buyer) to 20%. Best rates if you have good credit.
• FHA: government-insured loans for borrowers with lower credit or smaller down payments. 3.5% down. Requires mortgage insurance for the life of the loan (usually).
• VA: for military/veterans. Zero down, no PMI, usually lowest rates. Best deal in mortgages if you qualify.
• USDA: zero-down loans for homes in designated rural areas. Income-limited.
• Jumbo: loans above the conforming loan limit ($750k in most areas as of 2025). Usually require better credit and higher down payments.

By rate structure

• Fixed-rate (15, 20, 30 year): rate never changes. 30-year fixed is the American default. 15-year fixed has higher monthly payments but much lower total interest.
• Adjustable-rate mortgage (ARM): fixed for an initial period (5, 7, or 10 years), then adjusts annually based on an index. Lower initial rate, but real risk if you're still in the house when it adjusts.
• Interest-only: pay only interest for 5–10 years, then start paying principal. Niche product, usually a bad idea for most buyers.

What the differences look like in dollars

Abstract percentages hide how much these choices matter, so put them on a $350,000 loan — close to a typical first-home mortgage in 2026. The table below uses estimated rates; your quotes will differ, but the relationships between the products hold. Notice two things: the 15-year loan costs about $1,000 more per month but saves almost $190,000 in lifetime interest, and the FHA loan's payment includes mortgage insurance that, unlike conventional PMI, usually never cancels.

How to actually choose

1. 1
   Check the special programs first

   If you're a veteran or active military, price a VA loan before anything else — zero down and no monthly mortgage insurance is unbeatable. If the home is in a USDA-eligible area and your income qualifies, check USDA next.

2. 2
   Let your credit score pick FHA vs. conventional

   Below roughly a 680 score, FHA's pricing usually wins despite its permanent mortgage insurance. At 700-plus, conventional is almost always cheaper because PMI is smaller and cancellable once you reach 20% equity.

3. 3
   Pick the term from your budget, not the maximum

   Take the 15-year only if the higher payment still leaves room for retirement savings and an emergency fund. A 30-year with voluntary extra principal payments gives you the same payoff speed with an escape hatch.

4. 4
   Consider an ARM only with a real exit plan

   A 7/1 ARM makes sense if you're confident you'll sell or refinance within the fixed period — a relocation timeline, a starter condo. Hoping rates fall is not a plan; it's the bet that burned ARM borrowers in 2008.

Common mistakes when picking a loan type

• Defaulting to FHA because 'it's for first-time buyers.' It isn't — it's for lower credit scores. With good credit, a 3%-down conventional loan is usually cheaper both monthly and over time.
• Taking an ARM purely for the lower initial payment without pricing what happens at the first adjustment. Most ARMs can rise 2 points in a single year and 5 points over the loan's life.
• Ignoring loan limits. If your loan crosses the conforming limit, splitting it into a conforming first mortgage plus a second loan sometimes beats jumbo pricing — ask lenders to quote both.
• Choosing a 15-year term that leaves nothing for your 401(k). The mortgage rate you avoid is likely lower than the long-run return and tax break you gave up.
• Forgetting that the loan type affects the offer itself. In competitive markets, some sellers view FHA and VA offers as slower to close — a good agent and a well-prepared lender letter counter that.

Points, locks, and the fine print that moves the price

Two borrowers with identical loans can pay very different prices because of the mechanics wrapped around the rate. Discount points let you prepay interest: one point costs 1% of the loan amount and typically cuts the rate by about a quarter of a percentage point. Points are a bet on longevity — pay $3,500 today to save roughly $58 a month, and you break even around year five. If you might sell or refinance sooner, skip them; if this is your fifteen-year house and rates seem unlikely to fall, they're one of the few honest discounts in the business.

Rate locks matter too. A quote is not a price until it's locked, usually for 30, 45, or 60 days. If your closing slips past the lock, extensions cost money — often an eighth of a point per week — so match the lock period to a realistic closing date rather than an optimistic one. And learn the difference between the interest rate and the APR: the APR folds most lender fees into the rate, which makes it a decent single number for comparing offers, though it assumes you keep the loan for the entire term.

• Ask every lender to quote the same structure: identical loan type, term, down payment, lock period, and zero points. Otherwise you're comparing apples to invoices.
• A 'no-fee' loan isn't free — the fees are baked into a higher rate. Sometimes that trade is smart for short holding periods; just make it knowingly.
• Mortgage insurance is part of the price. A cheap rate with expensive PMI can lose to a slightly higher rate with cheaper insurance — always compare the full monthly payment.
• Your rate is built from your credit score, down payment, property type, and loan size. Moving your score from 690 to 740 before applying often saves more than any amount of negotiating afterward.
• Condos, manufactured homes, and investment properties all carry pricing add-ons — ask each lender to show you which ones apply to your purchase.

The bottom line

The right mortgage is the cheapest one you can comfortably carry for as long as you'll actually keep it. Veterans should start with VA, lower-credit buyers with FHA, and everyone else with conventional — then pick the shortest term that doesn't crowd out saving, and treat ARMs as a specialist tool rather than a discount. Tens of thousands of dollars ride on an hour of comparison.