What is loan-to-value ratio?
Loan-to-value ratio, usually abbreviated LTV, compares a mortgage amount or balance with the value of the property securing the loan. It expresses how much of the property's value is financed by the first mortgage.
LTV = First mortgage amount ÷ Property value × 100
For example, a $320,000 first mortgage on a $400,000 property has an 80% LTV. The remaining $80,000 represents 20% of the property value before considering any additional liens.
How to use the LTV calculator
Choose whether you are modeling a home purchase or a property you already own. Enter the property value and first mortgage amount or balance. If the property also secures a second mortgage or HELOC, enter that balance so the calculator can show combined loan-to-value.
The result section shows first-mortgage LTV, CLTV, total property debt, estimated equity, and the amount by which the first mortgage would need to be reduced to reach 80% or 75% LTV at the entered property value.
LTV vs. CLTV: what is the difference?
CLTV = (First mortgage + Second mortgage / HELOC balance) ÷ Property value × 100
Why LTV matters for a mortgage
LTV is an important mortgage underwriting and pricing variable because it describes the relationship between the debt and the collateral securing it. In general, a borrower with more equity has a lower LTV, while a borrower financing a larger share of the property value has a higher LTV.
Mortgage programs and lenders can use LTV when determining eligibility, pricing, mortgage-insurance treatment, refinance options, and how much additional property-secured borrowing may be available. The relevant limits are transaction-specific, so an LTV percentage by itself does not determine approval or pricing.
LTV and private mortgage insurance
For conventional mortgages, an 80% LTV threshold is often important when discussing private mortgage insurance, but PMI requirements and cancellation rules are more nuanced than a simple statement that PMI always applies above 80% LTV.
Purchase-loan mortgage insurance, borrower-requested cancellation, automatic termination, lender valuation requirements, and refinance transactions can involve different rules. Government loan programs also use their own mortgage-insurance or guarantee fee structures rather than conventional PMI rules.
Which property value should you use?
For a quick estimate, use the property value relevant to the scenario you are testing. For a purchase, that may begin with the expected purchase price. For an existing home, you may use a reasonable current-value estimate for planning.
Actual mortgage underwriting can use an appraisal, automated valuation, purchase price, or another transaction-specific value according to the applicable program and lender rules. Therefore, the lender's final LTV can differ from a homeowner's estimate.
How home equity relates to LTV
Home equity is the property value remaining after subtracting property-secured debt. If there is only one mortgage, a lower LTV generally corresponds to a higher equity percentage. When a second mortgage or HELOC is present, CLTV provides a better view of total debt secured by the property.
Estimated equity = Property value − Total entered mortgage debt
How can you lower your LTV?
On a purchase, increasing the down payment reduces the first mortgage relative to the purchase price. For an existing mortgage, paying down principal reduces the numerator in the LTV calculation. An increase in the value used by the lender can also lower the calculated ratio, although future property appreciation is not guaranteed.
The calculator's 80% and 75% paydown figures hold the entered property value constant. They show the mathematical reduction in the first mortgage needed to reach those ratios; they do not promise a particular lender rate, PMI outcome, or loan approval.
LTV for refinancing and home equity borrowing
For a refinance, the lender compares the applicable mortgage amount with the property value used for the transaction. If there are additional liens, CLTV or another combined ratio can become relevant.
Home equity loans and HELOCs also depend on how much debt is already secured by the property and the lender's permitted combined leverage. If your goal is specifically to evaluate borrowing against your equity, use the HELOC Calculator or review your home equity options.
Frequently asked questions
What does 80% LTV mean?
An 80% LTV means the first mortgage equals 80% of the property value used in the calculation. For example, a $320,000 first mortgage on a $400,000 property equals 80% LTV.
Is a lower LTV always better?
A lower LTV means less first-mortgage debt relative to property value and generally represents more equity. Mortgage eligibility and pricing still depend on many other borrower, property, market, and loan-program factors.
Does LTV include a HELOC?
First-mortgage LTV does not. CLTV combines the first mortgage with other entered property-secured balances. Some underwriting also uses HCLTV, which may account for an open-end HELOC's credit limit.
Can LTV be above 100%?
Mathematically, yes. LTV exceeds 100% when the first mortgage balance is greater than the property value used in the calculation. Whether a transaction is eligible at a particular LTV depends on the applicable loan program.
Does reaching 80% LTV automatically remove PMI?
Not necessarily. Conventional PMI cancellation and termination are subject to applicable rules and loan-specific conditions. Government-backed mortgage insurance follows different structures.
Is home equity the same as 100% minus LTV?
With only one mortgage and the same property value, the percentages are complementary. If a second mortgage or HELOC exists, use total secured debt and CLTV when estimating the equity remaining after all entered liens.
Methodology and related tools
MortgagePaymentCalculator.io is published by Family Brands LLC. Results are estimates for educational and planning purposes and are not property valuations, mortgage approvals, PMI determinations, or commitments to lend.