If you’re shopping for a mortgage, refinancing, or thinking about a HELOC, you’ll probably run into the term LTV pretty quickly.
It sounds technical, but the actual math is simple. LTV stands for loan-to-value ratio. In plain English, it tells a lender how much you’re borrowing compared with how much the home is worth. The Consumer Financial Protection Bureau (CFPB) says LTV compares the amount you are financing with the appraised value of the property, and the higher your down payment, the lower your LTV.
That number matters because lenders often use it to help decide:
- whether you qualify,
- whether you’ll need private mortgage insurance,
- what rates and terms you may get,
- and how much you may be able to borrow on a refinance or HELOC.
The good news is that you can calculate it yourself in a minute or two.
What Is LTV?
The basic LTV formula is:
LTV = loan amount ÷ home value
Then convert the result into a percentage.
Example:
- Loan amount: $240,000
- Home value: $300,000
$240,000 ÷ $300,000 = 0.80
So your LTV is 80%.
That is the whole formula. Simple, right? The trick is usually not the math. It is figuring out which value to use for the home.
Which Home Value Should You Use?
This is where people get tripped up.
If you are buying a home
For many purchase transactions, Fannie Mae says the property value used for LTV is the lower of the sales price or the current appraised value.
That means if:
- purchase price = $350,000
- appraised value = $340,000
You would usually calculate LTV using $340,000, not $350,000.
If you are refinancing
For refinance transactions, Fannie Mae says LTV is generally calculated using the current appraised value. CFPB rules for mortgage disclosures also distinguish refinances from purchases, noting that refinances may use the value determined by the appraisal or other valuation used to approve the credit transaction.
If you are using an online estimate
A home-value estimate can be useful for rough planning, but lenders often rely on an appraisal or other formal valuation when underwriting the loan. The CFPB explains that valuations and appraisals can differ because they are estimates based on comparable sales and market data.
So if you are just trying to ballpark your LTV at home, an estimate may help. If you are trying to predict what a lender will use, the appraisal usually matters more.
How to Calculate LTV Step by Step
Here is the easiest way to do it.
Step 1: Find your loan amount
Use:
- the mortgage amount you plan to borrow if you are buying, or
- your current mortgage payoff amount if you are refinancing.
Step 2: Find the property value
Use:
- the lower of purchase price or appraised value for many purchases, or
- the current appraised value for many refinances.
Step 3: Divide the loan amount by the value
Loan amount ÷ value
Step 4: Turn it into a percentage
Multiply by 100, or just move the decimal two places.
That gives you your LTV.
Simple LTV Examples
Example 1: Home purchase
- Purchase price: $400,000
- Down payment: $40,000
- Loan amount: $360,000
$360,000 ÷ $400,000 = 0.90
LTV = 90%
Example 2: Home purchase with low appraisal
- Purchase price: $400,000
- Appraised value: $390,000
- Loan amount: $360,000
Use the lower value for many purchase calculations.
$360,000 ÷ $390,000 = 0.923
LTV = 92.3%
Example 3: Refinance
- Current loan balance: $210,000
- Current appraised value: $300,000
$210,000 ÷ $300,000 = 0.70
LTV = 70%
That is why many current homeowners care about LTV. If your home value has risen or your mortgage balance has dropped, your LTV may improve over time.
Why LTV Matters
LTV affects more than one part of the mortgage process.
1. Mortgage approval
Lenders use LTV to measure risk. In general, the higher the LTV, the more risk the lender sees, because you are borrowing a larger share of the home’s value. The CFPB says LTV can affect whether lenders decide to lend to you and how much it may cost.
2. Private mortgage insurance
This is one of the biggest reasons buyers care about LTV.
The CFPB’s guidance on the Homeowners Protection Act says PMI is used extensively for “high-ratio” loans, generally when the LTV exceeds 80%. It also explains that borrowers may request cancellation when the mortgage is scheduled to reach 80% of the home’s original value, subject to the law’s requirements.
That is why 80% gets mentioned so often. It is not the only threshold in lending, but it is a very important one.
3. Rates and pricing
Higher-LTV loans can come with different pricing, tighter approval standards, or additional insurance costs. The CFPB notes that LTV relates to your costs, and Fannie Mae’s eligibility materials show that maximum LTV allowances depend on factors like occupancy, transaction type, and borrower profile.
4. Refinance options
Your LTV can affect whether you qualify for a refinance, including limited cash-out or other refinance products. Fannie Mae’s guidance includes transaction-specific LTV caps, and some options go as high as 97% for certain eligible principal-residence loans.
5. Cash-out and home equity borrowing
If you are trying to tap equity, LTV and related ratios become especially important because lenders want to know how much total debt will sit against the property.
What Is a “Good” LTV?
There is no one perfect number for every borrower, but here is a simple way to think about it:
- 80% or lower is often a strong threshold because it may help you avoid or remove PMI on many conventional loans.
- Above 80% is common, especially for buyers with smaller down payments. That does not automatically mean “bad.” It may just mean higher costs or different loan requirements.
- 95% to 97% can still be possible on some eligible programs, especially certain principal-residence conventional options.
So a “good” LTV depends on your goal. If you are buying sooner with a smaller down payment, a higher LTV may be part of the plan. If you are refinancing and trying to lower costs, a lower LTV may help more.
LTV vs. CLTV vs. HCLTV
These three terms sound similar, but they are not the same.
LTV
This is what we’ve discussed above. Simply the first mortgage amount divided by the property value.
CLTV
Combined loan-to-value includes the first mortgage plus other loans secured by the home. Fannie Mae says CLTV includes the original first mortgage amount, the drawn portion of a HELOC, and the unpaid principal balance of other subordinate financing, divided by the lower of the sales price or appraised value for many purchase transactions.
Simple example:
- First mortgage: $240,000
- Home equity loan: $30,000
- Home value: $300,000
($240,000 + $30,000) ÷ $300,000 = 0.90
CLTV = 90%
HCLTV
Home equity combined loan-to-value is similar, but for a HELOC it uses the full credit line amount, not just what you have drawn. Fannie Mae says HCLTV includes the original first mortgage, the full amount of any HELOCs, and the unpaid principal balance of any other subordinate financing, divided by the lower of the sales price or appraised value in many purchase cases.
Example:
- First mortgage: $240,000
- HELOC credit limit: $50,000
- Current HELOC balance: $10,000
- Home value: $300,000
For CLTV, you may use the drawn amount (the Current HELOC balance).
For HCLTV, you use the full $50,000 line.
That is the key difference.
What If Your LTV Feels Too High?
If your LTV is higher than you want, you may have a few options.
Put more down
For buyers, increasing the down payment lowers the loan amount and therefore lowers the LTV.
Pay down the mortgage
For current homeowners, reducing the principal balance lowers LTV over time.
Wait for appreciation
If property values rise, your LTV may improve, assuming your loan balance does not also rise.
Review the valuation
If you think the appraisal is off, the CFPB says mortgage borrowers can challenge inaccurate appraisals through the reconsideration-of-value process.
Compare lenders and loan products
Different lenders and loan programs can treat LTV thresholds differently. Fannie Mae and Freddie Mac guides show that allowable ratios depend on transaction type and product rules, not just one universal number.
That means if one lender says no, another may still have an option that fits. As daunting as it may sound, it pays to speak with more than one lender.
The Bottom Line
If you can divide, you can calculate your LTV.
Use this formula:
Loan amount ÷ home value = LTV
For many purchases, use the lower of the purchase price or appraised value. For many refinances, use the current appraised value. If you have a second loan or HELOC, make sure you do not confuse LTV with CLTV or HCLTV.
Once you know your LTV, you will have a better sense of how a lender may view your application, whether PMI might apply, and what refinance or home equity options may be available.
And if you are shopping for a mortgage, refinance, or HELOC, it is usually smart to compare more than one lender or provider. Small differences in how they value risk, price loans, or structure products can make a meaningful difference in your monthly payment and total borrowing cost.
