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CLTV Calculator

Written by Bennett Leckrone
Bennett Leckrone

Written by
Bennett Leckrone
Writer / Reviewer / Expert

Bennett Leckrone is the editorial manager and an analyst for Lower. He specializes in making complicated mortgage topics accessible for consumers. That includes both in-depth product guides and in-depth analysis on what economic moves mean for homebuyers and refinancers. He was previously a business reporter with a focus on higher education and fintech at BestColleges. In that role, he reported on the development of fintech and AI curriculum, as well as the rapidly changing nature of finance education. He also wrote guides to help business students navigate AI and online education. He also reported on state politics at Maryland Matters, with a focus on how policy affected people and businesses. He holds a bachelor of science in journalism degree from Ohio University.
Our Editorial Standards

Updated: May 12 2026 • 6 min read

CLTV Borrowing
Capacity Calculator

Estimate how much you can borrow against your home based on Combined Loan-to-Value (CLTV) — the ratio of all home-secured debt to your home’s value.

Estimated Borrowing Capacity

$0

What’s driving this estimateLive from your current assumptions
Use the sliders for quick comparisons or tap the blue value pills to type exact numbers.

Illustrative estimate only. Actual HELOC and home equity loan limits depend on lender guidelines, credit score, income, property type, and appraisal. This calculator does not constitute a loan offer or commitment to lend.

How this calculator works

Move the sliders to test scenarios, or tap any blue value pill to type an exact number. The headline result and supporting detail pills update live as you change inputs.

Methodology: CLTV = (Mortgage balance + other liens) ÷ Home value. Given your chosen maximum CLTV limit (commonly 80–90%), the calculator finds the maximum total debt allowed, then subtracts what you already owe: Borrowing capacity = (Home value × max CLTV) − existing debt. If existing debt already exceeds the CLTV limit, capacity is $0.

Worked example: Home value $500,000, mortgage balance $275,000, no other liens, max 80% CLTV: max total debt = $500,000 × 0.80 = $400,000; existing debt = $275,000; borrowing capacity = $400,000 − $275,000 = $125,000.

Use these estimates to compare options and prepare questions for a lender. Final pricing, eligibility, and approval depend on a full application and lender review.

Key Takeaways

  • Our combined loan-to-value (CLTV) calculator can help you estimate how much total mortgage-related debt you have compared with your home’s value, including your first mortgage plus any home equity loan or HELOC balance.
  • Our combined loan-to-value (CLTV) calculator can help you estimate how much total mortgage-related debt you have compared with your home’s value, including your first mortgage plus any home equity loan or HELOC balance.
  • Our combined loan-to-value (CLTV) calculator can help you estimate how much total mortgage-related debt you have compared with your home’s value, including your first mortgage plus any home equity loan or HELOC balance.

How Our CLTV Calculator Works

Combined loan-to-value (CLTV) is a common metric in home equity loans in deciding how much you can borrow. Many lenders use CLTV caps for home equity loans, often around 80%.

This calculator estimates borrowing capacity based on maximum CLTV, which compares your total mortgage-related debt to your home’s value.

Our CLTV formula combines your mortgage balance with other home equity loans, and then divides by your estimated home value. 

Then we weigh that against borrow capacity, or the maximum combined-loan-to-value. 

In purchase transactions, underwriting often uses a defined value basis, which can be the lesser of the sales price or appraised value depending on the program and transaction.

Key Inputs For An Accurate CLTV Estimate

Our CLTV calculator provides illustrative estimates. You'll need to consult with an expert loan officer to get an accurate picture of your CLTV.

Here are some important inputs for our calculator: 

  • Estimated home value, or your appraised value if you have one.
  • Your current first mortgage balance.
  • Other home-secured balances, such as a second mortgage, home equity loan, or the outstanding HELOC balance.
  • Maximum CLTV target, or the limit you want to test. 

f you are close to a major threshold, even a small change in value or balances can change the result.

Common CLTV Caps

Exact caps vary by product, occupancy, and credit profile. These benchmarks are useful for planning.

CLTV Threshold Why It Comes Up What It Can Mean In Practice
80% Common breakpoint for risk and insurance conversations May reduce constraints compared with higher leverage, depending on the product
90% Common planning target for higher-leverage scenarios May be possible for some products, with tighter requirements
95% to 97% Higher-leverage tier used in certain agency programs Often limited to specific eligibility and documentation requirements

Limitations And Considerations

Home value drives the result. A lender’s appraisal or valuation method can change CLTV.
HELOCs can also be evaluated differently depending on the program, including whether the calculation uses the outstanding balance or other measures.
Product caps vary by loan type and property details. Freddie Mac publishes maximum LTV and related ratio requirements for conforming and super conforming mortgages, which illustrate how program rules set caps.

Frequently Asked Questions

What Is The Difference Between CLTV And LTV?

LTV typically looks at one loan compared with the home’s value. CLTV includes all mortgages and home-secured debts compared with the home’s value, which gives a fuller view of total leverage.

Does CLTV Include A HELOC?

Yes. CLTV typically includes a HELOC along with your first mortgage and any other home-secured debt. Depending on the program, the way a HELOC is counted can vary.

What CLTV Do Lenders Usually Want?

There is no single universal number. Many borrowers test scenarios around 80 to 90 percent and then confirm product-specific caps with a lender.

Can CLTV Affect Mortgage Insurance Decisions?

It can be part of the broader leverage picture. For conventional PMI, the CFPB explains when borrowers may be able to request PMI cancellation based on equity and other requirements.

How Often Should I Check My CLTV?

Check it at least annually, and also any time you are considering a home equity loan, HELOC, cash-out refinance, or a refinance meant to change insurance or pricing tiers.

See how much equity you can access.

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