What is a conventional loan?

Mortgages are usually sorted by who stands behind them. FHA loans carry insurance from the Federal Housing Administration. VA loans carry a guaranty from the Department of Veterans Affairs. USDA loans carry a USDA guarantee. A conventional loan carries none of those — it is originated and held or sold entirely in the private market.

That single distinction drives most of the practical differences people notice: how mortgage insurance is priced and removed, which upfront fees exist, how property and occupancy rules are written, and which loan-size limits apply.

Within conventional lending, loan size is the first fork in the road. The same dollar amount can be treated three different ways depending on the county and the number of units in the property.

All three are conventional. Only the first two are conforming. Jumbo loans are underwritten to the individual lender's or investor's guidelines, which is why their credit, reserve, and documentation expectations often differ from conforming loans.

You can check where a specific loan amount falls with the jumbo vs conforming classifier, which uses the official 2026 county table.

The Federal Housing Finance Agency publishes conforming loan limits each year for every county and county equivalent, at one, two, three, and four units. The baseline rises or falls with FHFA's house-price index, and high-cost areas receive a higher limit tied to local median home values, subject to a national ceiling.

Source: Federal Housing Finance Agency, Full County Loan Limit List 2026 (HERA-Based Final Flat), retrieved 2026-07-29. Two-, three-, and four-unit properties carry progressively higher limits in every tier.

Look up any county with the 2026 county limit lookup, or browse limits by state.

Conventional underwriting weighs a handful of factors together rather than applying a single cutoff. No one factor decides the outcome, and strength in one area can offset a weaker one — within limits set by the program.

The qualification factors guide goes deeper on each, and the DTI calculator lets you model the ratio with your own numbers.

When a conventional loan starts above 80% loan-to-value, private mortgage insurance generally applies. PMI protects the lender, not the borrower — but it is what makes a low-down-payment conventional loan possible at all, and it is not permanent.

Two mechanisms end PMI on most conventional loans: a borrower-initiated request once the loan reaches the applicable equity threshold, and automatic termination on the amortization schedule. That contrasts with FHA mortgage insurance, which on many current FHA loans lasts the life of the loan unless the borrower refinances.

“Conventional” says nothing about how the interest rate behaves or how long the loan lasts. Those are separate choices layered on top of the program, and they change the payment far more than the label does.

The term decision is usually a cash-flow question rather than a math question: a shorter term reduces total interest, but only if the higher required payment is comfortable in every month, not just a good one. You can compare the two directly in the 15-year vs 30-year comparison.

The interest rate is one input among several. Two quotes at the same rate can cost meaningfully different amounts once the rest of the structure is compared, which is why an apples-to-apples comparison matters more than a single number.

Points deserve particular care, because they move the rate in a way that looks like a better deal until the upfront cost is set against the holding period. The points break-even calculator models that trade directly.

This page is educational. It does not quote rates, fees, or terms, and nothing here is an offer or commitment to lend.

The sequence is fairly consistent across conventional transactions, even though timelines differ by property, market, and how quickly documentation is returned.

1. Frame the scenario. Purchase or refinance, occupancy, property type, rough loan amount, and the county — the last two together determine whether the loan is conforming, high-balance, or jumbo.
2. Review qualification factors. Credit profile, income and debts, funds for down payment and closing, and reserves remaining afterward.
3. Get a written estimate. A loan estimate lays out rate, points, lender fees, third-party costs, and mortgage insurance in a comparable format.
4. Application and documentation. Income, asset, and identity documentation is collected and verified.
5. Property review. Appraisal and, for condos, project eligibility review. This step is the most common source of timeline surprises.
6. Underwriting. The file is evaluated as a whole; conditions may be issued and cleared.
7. Closing. Final documents are signed and the loan funds and records.

No program is universally better. The comparison depends on your credit profile, available down payment, the property, and how long you expect to keep the loan.

Read the full neutral comparisons: conventional vs FHA and conventional vs VA.

Myth: You need 20% down for a conventional loan.

Twenty percent is the LTV threshold at which PMI generally is not required at origination, not a minimum down payment.

Myth: Conventional and conforming mean the same thing.

Conforming is a subset of conventional. A jumbo loan is conventional but not conforming.

Myth: Conventional PMI never goes away.

That description fits many current FHA loans. Conventional mortgage insurance generally terminates by request or automatically on the amortization schedule.

Myth: Conventional loans are always cheaper.

Cost depends on credit profile, LTV, mortgage insurance pricing, and holding period. FHA is sometimes the stronger structure.

Myth: Jumbo means luxury.

Jumbo is purely a loan-size classification relative to the county limit. In some counties a modest home can require a jumbo loan.

• Assuming a program is off the table because of a 20% down payment myth.
• Comparing programs on monthly payment alone, ignoring mortgage insurance removal and holding period.
• Draining cash reserves to reach a specific LTV tier, then having nothing left after closing.
• Treating the national baseline as your limit without checking the county and unit count.
• Shopping quotes with different assumptions about points, escrows, and mortgage insurance structure.
• Waiting until underwriting to raise condo project, occupancy, or property-type questions.

• Which conventional program are you quoting, and how does it treat my down payment tier?
• How is mortgage insurance structured here, and what would end it in my scenario?
• What is the conforming limit for my county and unit count, and where does my loan fall?
• How would my quote change at the next down-payment tier up or down?
• What reserves are expected after closing for this occupancy and property type?
• Which of my qualification factors is the constraint, and what would relieve it?