Loan-to-Value (LTV) ratio
The ratio of a loan balance to the appraised value of the underlying asset. Lower LTV = less risk for the lender, often better terms.
Reviewed May 2026.
LTV is mostly a mortgage and auto loan concept. It tells the lender how much of the asset's value is borrowed vs. owner equity. A $400,000 loan against a $500,000 home is 80% LTV.
For mortgages: LTV above 80% triggers PMI (private mortgage insurance) on conforming loans. PMI cancellation has two paths under the Homeowners Protection Act — borrower-requested at 80% LTV based on actual balance (the borrower submits a written request and the servicer must cancel if conditions are met), and automatic termination on the date the loan was scheduled to reach 78% LTV per the original amortization schedule. Extra principal payments can let you cross the 80% threshold sooner and request cancellation; they do not move up the automatic-termination date, which is tied to the original schedule. Refinancing into a lower rate usually requires LTV under 80%, sometimes 90% with mortgage insurance.
For auto loans: high LTV (above 100% — owing more than the car's value) is called being 'underwater' or 'upside-down.' This makes refinancing harder and selling impossible without bringing cash to the table.
PayoffMath angle. Extra payments don't just save interest — they pull your LTV down faster, which can let you cancel PMI early, refinance into a better tier, or unlock a cash-out option. The interest savings and the LTV move are two separate prepayment benefits stacked on top of each other.
Why it matters. LTV is the number that decides PMI cancellation eligibility, refinance pricing tier, and cash-out availability. Tracking your current LTV (current balance ÷ current home value) is the right way to spot a savings window the lender won't surface on its own.
Common mistake. Treating LTV as a one-time number from origination. PMI cancellation uses the original purchase price as the LTV denominator, but refinance pricing uses current appraised value — same loan, two different LTV numbers that point to two different actions.
Try the mortgage payoff calculator → — track when extras push the balance below the 80% LTV PMI-cancellation threshold and the 78% automatic-termination date.
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Sources and review
Reviewed May 2026. Glossary entries are plain-language definitions, not legal definitions. For account-specific rules, your loan documents control.
Definition by James L. Wu. Plain-language gloss, not a legal definition. For terms that show up in your loan paperwork, the governing language is in your loan documents. See the editorial policy for sourcing.