Understanding your Loan-to-Value (LTV) ratio is one of the most critical steps in securing a mortgage. Whether you are buying a new home or refinancing an existing one, the LTV calculator helps you assess your lending risk and determine if you will need to pay for Private Mortgage Insurance (PMI).

What is the Loan-to-Value (LTV) Ratio?
The Loan-to-Value (LTV) ratio is a financial term used by lenders to express the ratio of a loan to the value of an asset purchased. In real estate, the LTV ratio is calculated by dividing the amount borrowed by the appraised value of the property, expressed as a percentage.
Lenders use the LTV ratio to assess the risk of lending to a borrower. A higher LTV ratio indicates more risk because the borrower has less equity in the property. If the borrower defaults, the lender may not be able to sell the property for enough money to cover the outstanding loan balance. Conversely, a lower LTV ratio means the borrower has a significant stake in the property, making them less likely to walk away from the loan.
For example, if you buy a home appraised at $100,000 and make a down payment of $20,000, you will need to borrow $80,000. Your LTV ratio would be 80% ($80,000 / $100,000). This is a standard benchmark in the mortgage industry.
How to Calculate LTV
Calculating your LTV is straightforward. You need two key pieces of information: the appraised value of the property and the amount of the mortgage loan.
LTV Formula
LTV Ratio = (Mortgage Amount ÷ Appraised Property Value) × 100
Let's break down a few scenarios to see how different down payments affect your LTV ratio on a $300,000 home:
- Scenario A (3% Down): Loan Amount = $291,000. LTV = ($291,000 / $300,000) * 100 = 97%.
- Scenario B (10% Down): Loan Amount = $270,000. LTV = ($270,000 / $300,000) * 100 = 90%.
- Scenario C (20% Down): Loan Amount = $240,000. LTV = ($240,000 / $300,000) * 100 = 80%.
As you can see, a larger down payment directly reduces your LTV ratio, which can unlock better interest rates and loan terms.
Why Does LTV Matter?
Your LTV ratio influences several aspects of your mortgage application and ongoing costs. It is not just a number; it is a gateway to approval and affordability.
1. Loan Approval
Most lenders have maximum LTV limits. For a conventional loan, the limit is often 97% for first-time homebuyers, but you will need a strong credit score. If your LTV is too high, your loan application may be denied unless you can put more money down.
2. Interest Rates
Loans with lower LTV ratios are considered safer investments for lenders. Consequently, borrowers with low LTV ratios (typically 80% or lower) often qualify for the lowest available interest rates. A high LTV ratio might result in a higher interest rate to offset the lender's risk. You might also want to compare this with an Interest Only Loan to understand different payment structures.
3. Private Mortgage Insurance (PMI)
This is perhaps the most direct financial impact of a high LTV. If your LTV is greater than 80% on a conventional loan, lenders will almost always require you to pay for Private Mortgage Insurance (PMI). PMI protects the lender if you default, but it adds to your monthly payment without building any equity for you.
What is a Good LTV Ratio?
While "good" can be subjective based on your financial situation, there are industry standards that define risk tiers.
- 80% or Lower: This is the gold standard. At 80% LTV, you typically avoid PMI and qualify for excellent interest rates. It implies you have 20% equity in the property.
- 80% to 95%: This is common for many homebuyers, especially first-time buyers. You will likely pay PMI, and your interest rate might be slightly higher. However, it allows you to buy a home without saving a massive 20% down payment.
- Above 95%: This is considered high risk. Conventional loans may cap at 97%. FHA loans allow up to 96.5% LTV. Use our FHA Mortgage Calculator to see if you qualify. Loans with LTVs near 100% (like VA or USDA loans) are available for eligible borrowers but come with their own strict requirements and fees.
Combined Loan-to-Value (CLTV)
If you have more than one loan on a property, such as a primary mortgage and a home equity line of credit (HELOC), lenders look at the Combined Loan-to-Value (CLTV) ratio.
CLTV is calculated by adding all loan balances secured by the property and dividing by the property's value. For example, if you have a first mortgage of $200,000 and a HELOC of $50,000 on a $400,000 home:
CLTV = ($200,000 + $50,000) / $400,000 = 62.5%.
Lenders often have caps on CLTV as well, typically around 85% to 90%, meaning you cannot borrow more than that percentage of your home's value across all loans.
How to Lower Your LTV
If your LTV is higher than you would like, there are two primary ways to lower it: reduce the loan amount or increase the property value.
Make a Larger Down Payment
The most direct way to start with a lower LTV is to put more money down upfront. Saving for a 20% down payment is a traditional goal for this very reason—it avoids PMI and secures the best terms immediately.
Pay Down Your Principal
Every monthly mortgage payment you make includes a portion that goes toward the principal balance. Over time, this reduces your loan amount and naturally lowers your LTV. You can accelerate this process by making extra principal payments. Use our Loan Calculator with Extra Payments to see how fast you can build equity.
Property Appreciation
Real estate values tend to rise over time. If your home's value increases, your LTV decreases even if your loan balance stays the same (though it will be decreasing too). For example, if your home value jumps from $300,000 to $350,000, your equity increases significantly. Real estate investors often look at Cap Rate to assess value, but for homeowners, appreciation is key.
LTV for Refinancing
LTV is crucial when refinancing. If you want to refinance to get a lower rate or cash out equity, you will need a new appraisal.
For a "rate-and-term" refinance (changing the rate or loan length), lenders often allow up to 95-97% LTV. However, for a "cash-out" refinance (where you take cash away from closing), lenders are stricter, often capping LTV at 80%. This ensures you still have a buffer of equity left in the home.
Frequently Asked Questions
Conclusion
The LTV calculator is a simple yet powerful tool for understanding your position in the real estate market. Whether you are aiming to avoid PMI, secure a lower interest rate, or tap into your home's equity, knowing your LTV ratio empowers you to make informed financial decisions.
Always aim to keep your LTV as low as reasonably possible to maximize your equity and minimize your costs. If you are considering an FHA loan, check our FHA Mortgage Calculator. For more information on mortgage rules and lending standards, visit the Consumer Financial Protection Bureau (CFPB) or consult with a qualified mortgage professional.