Loan-to-Value Ratio for Home Loans: Calculate LTV

This calculator works out a home loan’s loan-to-value ratio (LTV), the loan amount divided by the property’s value and expressed as a percentage. Enter the loan amount and property value to see the LTV and the equity represented by the difference.

Formula

LTV (%) = (loan amount ÷ property value) × 100. In the calculator, loan is the amount borrowed in dollars, and value is the property value in dollars. The second output, equity, is property value minus the loan amount, also in dollars. LTV is a ratio, not an interest rate: it compares debt secured by the property with the value used in the calculation.

Worked Example

Using the default inputs:

• Loan amount: $300,000
• Property value: $375,000

Divide the loan by the property value: $300,000 ÷ $375,000 = 0.8. Multiply by 100 to express the result as a percentage: 0.8 × 100 = 80.00% LTV. The equity amount is $375,000 − $300,000 = $75,000. This arithmetic treats the full entered loan as the amount secured against the property.

Assumptions

• The entered loan amount and property value are in the same currency and refer to the same property.
• The calculation uses the values entered; it does not estimate an appraisal, purchase price, or lender valuation.
• Equity is the simple difference between property value and the entered loan amount, before selling costs or other claims.
• No interest, payment timing, fees, taxes, insurance, PMI, or escrow are modelled because these are not inputs to this ratio calculator.

What LTV Means for a Home Loan

LTV gives a snapshot of how much of a property’s stated value is financed by a particular loan. If a $300,000 loan is measured against a $375,000 value, the loan equals 80% of that value. The remaining 20% is the corresponding equity share in this simplified calculation. A larger LTV means the loan is larger relative to the value used; a smaller LTV means it is smaller.

People use LTV when discussing a home purchase, a mortgage balance, or a loan secured by home equity. The exact purpose matters: a purchase calculation may compare a proposed loan with a purchase price or a valuation, while a later calculation may compare the current balance with an updated property value. Use the specific figures required for the comparison you are making. A calculator cannot determine which value a lender will accept.

How to Choose the Inputs

Enter the loan amount that belongs in the calculation, not automatically the home’s full purchase price. For a new loan, that might be the proposed amount being borrowed. For an existing mortgage, it might be the current balance if the question concerns the remaining debt. If several loans are secured against the property, a single-loan LTV does not show the combined debt; add the relevant balances first when calculating a combined ratio.

Choose the property value that matches the question and the source of the figure. A purchase price, an estimated market value, and a formal lender valuation are not necessarily the same. Entering one in place of another can change the result even when the loan amount is unchanged. The calculator reports the arithmetic for your inputs; it does not verify a property’s value or predict a lender’s assessment.

The inputs must use the same currency and valuation basis. For example, do not divide a loan in one currency by a property value in another, and do not compare a loan for one property with the value of a different property. The calculation can return an LTV above 100% if the loan exceeds the entered value; that is mathematically valid, though it means the entered debt is greater than the entered property value.

Why LTV Matters—and What It Leaves Out

LTV is one measure of a loan’s size relative to collateral value. It does not show the monthly payment, interest cost, total borrowing cost, income available for payments, or the borrower’s full financial position. It also does not, by itself, say whether a loan will be approved or what terms may apply. Those matters depend on details and criteria outside this calculation, so obtain exact figures and requirements from the lender rather than infer them from LTV alone.

Mortgage-related costs can also be separate from the ratio. Depending on the transaction and loan, costs such as fees, taxes, insurance, or mortgage insurance may affect the amount due or the overall cost without appearing in this simple LTV formula. The calculator has no inputs for those items. It is not a payment or affordability calculator, and an equity figure here is not necessarily cash that can be accessed.

Common Misunderstandings and Limits

• LTV is not the down-payment percentage in every calculation. For a straightforward purchase with no other financing, the portion of the purchase price not covered by the loan may correspond to the equity share. But different value inputs, additional secured borrowing, or other transaction details can make that shortcut misleading.
• Equity is not the same as available cash. The calculator subtracts the loan amount from the entered value. It does not account for other debt, selling costs, eligibility rules, or whether funds can be borrowed against the property.
• A changing value changes LTV. If the loan stays fixed while the property value changes, the ratio changes. An estimate of value is not the same as a confirmed valuation.
• Rounding affects only the display. The calculator shows LTV to two decimal places. A displayed percentage is rounded; calculations using unrounded inputs may differ slightly from a result worked from the displayed number.

For a more complete picture, calculate LTV using clearly identified figures, then review the lender’s valuation, loan balance, disclosures, and any other applicable costs separately. This tool is for educational arithmetic, not a decision about borrowing.

Frequently Asked Questions

How do you calculate LTV on a home loan?
Divide the loan amount by the property value, then multiply by 100. For example, $240,000 ÷ $300,000 × 100 gives an LTV of 80%.

Does LTV use the purchase price or appraised value?
It depends on the calculation and the lender’s requirements. The calculator uses whichever property value you enter; ask the lender which valuation figure applies to your situation.

Can a home loan have an LTV over 100%?
Yes, as a mathematical result, if the entered loan exceeds the entered property value. Check that the figures are correct and refer to the same property and time period.

Is LTV the same as equity?
No. LTV is a percentage comparing the loan with property value. Simple equity is the difference between the property value and the loan amount, before other debts or costs.

Does a lower LTV guarantee loan approval or a particular rate?
No. LTV alone cannot establish approval, pricing, or other loan terms. Criteria and figures vary, so get the applicable information directly from the lender.

This result is an estimate based on the figures entered; the lender’s disclosure gives the exact figures.

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in loan | Home loan amount | $ | 300000 | 1 | 100000000
in value | Property value | $ | 375000 | 1 | 100000000
out ltv | Loan-to-value ratio | % | 100 * loan / value | 2
out equity | Equity amount | $ | value - loan | 2