The Loan-to-Value (LTV) ratio is the size of your mortgage divided by the appraised value of the property, expressed as a percentage. It's one of the most important numbers in mortgage underwriting because it tells the lender how much equity cushion stands behind the loan.
A lower LTV means you have more equity in the home relative to the loan; a higher LTV means less equity and, generally, more risk to the lender.
How it works
Divide the loan amount by the home's value and multiply by 100. If a home is valued at $400,000 and the loan is $320,000, the LTV is 80% ($320,000 ÷ $400,000 = 0.80). If the same home is purchased with a $360,000 loan, the LTV rises to 90%.
LTV moves over time too, not just at closing. As you pay down principal and as home values change, your LTV shifts — it can improve faster than your amortization schedule alone would suggest if local home values rise.
Lenders set maximum LTV thresholds by loan program. Crossing certain LTV lines can trigger requirements like mortgage insurance, additional reserves, or a different pricing tier, so the number isn't just informational — it actively shapes what a lender will approve and what it will cost.
When it matters to you
LTV matters at closing because it often determines whether you'll pay mortgage insurance and how your rate is priced. It matters again years later, because reaching a lower LTV threshold (through paydown or appreciation) is usually how you get mortgage insurance removed.
LTV also matters any time you're considering a cash-out refinance or home equity product — lenders cap how much equity you can pull out based on the resulting LTV.
Common mistakes
- Confusing LTV with down payment percentage — they're related but not identical, especially once you factor in closing costs rolled into the loan.
- Not tracking LTV over time and missing the point at which mortgage insurance could be canceled.
- Assuming a recent home-value estimate from an online tool will match what an appraiser determines — only a real appraisal sets the LTV a lender relies on.
- Overlooking that a second mortgage or HELOC adds to your combined LTV, which lenders evaluate separately from your first mortgage's LTV alone.
FAQs
What's a good LTV ratio?
Lower is generally better for pricing and avoiding mortgage insurance, but plenty of loan programs are built around higher LTVs — VA and USDA loans routinely go to 100% LTV. "Good" depends on the loan program and your goals, not a single universal number.
How is LTV different from my down payment percentage?
Your down payment percentage is based on the purchase price. LTV is based on the appraised value, which can be higher or lower than the price. If the appraisal comes in above the purchase price, your effective LTV can end up slightly better than the down payment percentage alone would suggest.
Does LTV affect my rate?
Yes. Lower LTV generally means better pricing because the lender is taking less risk. Loans above certain LTV thresholds often carry rate adjustments or mortgage insurance requirements.