Loan to Value (LTV) Ratio Explained
When you apply for a mortgage, lenders look at several numbers to decide how much risk they’re taking on. One of the most important — alongside your credit score and debt to income ratio — is the loan to value ratio. It’s a simple concept, but it has a big impact on your interest rate, your down payment requirements, and whether you’ll need to pay for mortgage insurance.
This guide explains what this ratio means, how to calculate it, why it matters so much for mortgage approval, and how to use it to your advantage when buying or refinancing a home.
What Is Loan to Value Ratio?
At its core, this figure compares the size of your loan to the appraised value of the property you’re buying or refinancing. It tells a lender how much of the home’s value they’re financing versus how much equity — or down payment — you’re bringing to the table.
A lower number means you’re financing a smaller portion of the home’s value, which represents less risk for the lender. A higher number means you’re borrowing closer to the full value of the property, which represents more risk since there’s less of a buffer if home prices drop or you’re unable to make payments.
This is why the loan to value ratio is one of the first figures underwriters check when reviewing a mortgage application, right alongside income, credit history, and existing debt obligations.
How to Calculate Loan to Value Ratio
The formula is straightforward:
Loan Amount ÷ Appraised Property Value × 100 = LTV Percentage
Example: Say you’re buying a home appraised at $300,000, and you’re putting down $60,000, meaning your loan amount is $240,000.
$240,000 ÷ $300,000 = 0.80 → 80% LTV
This means you’re financing 80% of the home’s value, while your down payment covers the remaining 20%.
If you’re refinancing rather than purchasing, the formula works the same way, except your loan amount is compared against your home’s current appraised value rather than the original purchase price.
Once you know your numbers, you can plug your loan amount and home value into a Mortgage Calculator to see how different down payment amounts change your loan to value ratio, monthly payment, total interest, and whether you’d need mortgage insurance based on where you land.
Why This Number Matters for Mortgage Approval
The loan to value ratio for mortgage approval affects several things simultaneously:
1. Interest rate. Lower ratios typically qualify for better interest rates, since the lender is taking on less risk. Borrowers financing 60-70% of a home’s value often get more favorable pricing than those financing 90-95%.
2. Private mortgage insurance (PMI). On conventional loans in the US, if your ratio is above 80%, lenders typically require PMI to protect themselves in case of default. This adds an extra monthly cost until you build enough equity to have it removed.
3. Loan approval odds. Higher ratios signal higher risk, so lenders may apply stricter requirements around credit score, income documentation, or cash reserves for borrowers closer to 90-95%.
4. Loan program eligibility. Some loan programs cap how high this figure can be. Conventional loans often top out around 95-97%, while certain government-backed programs allow up to 100% financing for qualifying borrowers.
What Counts as a Good LTV?
| LTV Range | What It Generally Means |
|---|---|
| 80% or below | Considered favorable; often avoids mortgage insurance requirements |
| 81%–90% | Common range; typically requires PMI on conventional loans |
| 91%–95% | Higher risk tier; stricter underwriting and higher rates likely |
| Above 95% | Limited to specific loan programs, often with added requirements |
The commonly cited 80% threshold exists largely because of PMI rules on conventional mortgages — crossing below it is one of the main reasons homeowners work to build equity faster or make larger down payments.
Ratio LTV vs Other Lending Metrics
It’s worth understanding how the loan to value ratio differs from other numbers lenders review:
- LTV vs Debt to Income Ratio: This figure measures the loan against the property’s value, while debt to income ratio measures your monthly debt payments against your income. Lenders review both together, not in isolation.
- LTV vs Credit Score: Credit score reflects your payment history and creditworthiness, while this ratio reflects the equity position and collateral risk on the specific loan.
- Combined LTV (CLTV): If you have a second mortgage or home equity line in addition to your primary loan, lenders calculate a combined figure using the total of all loans against the property’s value, not just the primary loan amount.
LTV Mortgage Strategies to Improve Your Position
If your loan to value ratio is higher than you’d like, there are practical ways to improve your position before or after closing:
1. Increase your down payment. The most direct way to lower this number before closing is simply putting more money down, reducing the loan amount relative to the home’s value.
2. Choose a less expensive property. Buying below your maximum budget naturally results in a lower loan amount relative to value, assuming your down payment stays the same.
3. Make extra principal payments. Paying down your loan balance faster builds equity more quickly, which lowers this figure over time even without home value appreciation.
4. Wait for market appreciation. If home values rise in your area, your equity position improves even without any additional payments, which can eventually allow PMI removal on existing loans.
5. Get a new appraisal after improvements. Renovations or upgrades that increase your home’s value can sometimes justify a new appraisal, improving your loan to value ratio for refinancing purposes.
LTV in Refinancing
When refinancing, lenders recalculate your loan to value ratio using your home’s current value rather than its original purchase price. This is especially relevant for:
- Cash-out refinances, where you borrow against built-up equity, increasing the loan amount and therefore the ratio
- Rate-and-term refinances, where a higher home value (due to appreciation) can result in a lower ratio and potentially better terms
- Removing PMI, since dropping below 80% through appreciation or extra payments can qualify you to request PMI cancellation on an existing conventional loan
Final Thoughts
The loan to value ratio is one of the most influential numbers in mortgage lending, shaping your interest rate, your mortgage insurance requirements, and your loan approval odds. Whether you’re buying your first home or considering a refinance, understanding how it’s calculated — and what you can do to improve it — puts you in a much stronger negotiating position.
Before making a decision, it’s worth running your numbers through a mortgage calculator to see how different down payment amounts or loan sizes affect your monthly payment and overall costs, so you can plan your purchase or refinance with clearer expectations.
This article is for general informational purposes and does not constitute financial advice. Consider speaking with a qualified mortgage professional about your specific situation.