Complete guide · Money
Understanding Home Equity
What equity is, how it accumulates, the four ways to access it, and how to decide whether borrowing against your home is reasonable.
Fact-checked and reviewed for financial accuracy by Priya Kannan, CFP®. Read our content review process.
Equity is the part of your home you own outright: current value minus everything owed against it. It is the largest asset most households will ever hold, and the most commonly misunderstood.
This guide covers how equity builds, how to measure it, every way to access it, and how to decide whether you should.
01 What equity is and how it grows
Three forces build equity, and only one of them is under your control.
- Principal payments — small early in a loan, large later
- Appreciation — market movement you do not control
- Improvements — usually adding less value than they cost
- Extra principal payments early are disproportionately powerful
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02 Measuring it: loan-to-value
LTV is the number every lender uses, and the number that unlocks your options.
- Divide what you owe by a realistic current value
- Below 80 percent unlocks PMI cancellation and most equity products
- Online estimates are a starting point, not evidence
- An appraisal costs a few hundred dollars and settles the question
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03 Removing mortgage insurance
For many owners, the first practical benefit of equity is eliminating a monthly cost.
- Automatic termination occurs at 78 percent of original value
- You may request cancellation at 80 percent
- Appreciation-based cancellation usually requires a new appraisal
- FHA loans generally require a refinance instead
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04 HELOC versus home equity loan
One is a revolving line, the other a lump sum. The right choice depends on whether your expense is a number or a range.
- HELOCs suit phased projects and uncertain totals
- Home equity loans suit one defined expense
- Model the payment after the HELOC draw period ends
- Lenders can freeze or reduce a line
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05 Cash-out refinancing
Replacing your first mortgage to access equity is sometimes right and frequently expensive.
- Compare against a second lien before committing
- A low existing first-mortgage rate is worth protecting
- Expect full closing costs and a new appraisal
- Most programs require retaining 20 percent equity
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06 Tax treatment and record-keeping
Deductibility depends on what you did with the money, not on the type of loan.
- Interest is generally deductible only for buy, build, or substantial improvement
- Keep records tying draws to specific improvement costs
- Improvements also raise your cost basis, which matters at sale
- Confirm current rules with a tax professional
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07 Reasonable and unreasonable uses
The collateral is where you live. That should raise the bar, not lower it.
- Defensible: improvements, high-rate debt consolidation with the cause solved, urgent needs
- Questionable: vehicles, travel, investing borrowed funds
- Any equity borrowing converts an unsecured problem into a secured one
- Model the payment before you draw, not after
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Frequently asked questions
How much equity do I need to borrow against my home?
Most lenders want you to retain 15 to 20 percent equity after the new loan, meaning combined borrowing up to 80 to 85 percent of value.
Is it smart to use home equity to pay off credit cards?
It lowers the rate and raises the stakes — the debt becomes secured by your home. It works when the underlying spending is under control and fails badly when it is not.
Does paying extra principal build equity faster?
Yes, and dramatically so early in a loan, because those payments have the longest remaining term to accrue interest.
Editorial note. This article is educational and is not financial, tax, or legal advice. Loan terms, rates, insurance costs, and tax rules vary by lender, state, and individual circumstance. Figures shown are illustrative. Confirm details with a licensed lender, tax professional, or attorney before making a decision.