A home equity loan calculator is a tool that helps you estimate the monthly payment, total interest cost, and overall affordability of a home equity loan - and separately, the maximum amount you may be eligible to borrow based on your home's current value and your outstanding mortgage balance. Our calculator includes two tools: a Monthly Payment Calculator that shows your payment, total interest, and full amortization schedule (with optional closing costs and APR), and a Maximum Loan Amount Estimator that computes your borrowing ceiling at various Loan-to-Value ratios.
Understanding these numbers before you apply is essential. A home equity loan uses your home as collateral - which means the stakes are higher than for credit cards or personal loans. Running the numbers in a home equity loan calculator first lets you confirm that the monthly payment fits your budget, compare the true cost (including closing costs) against alternatives, and approach lenders with realistic expectations.
A home equity loan - also called a second mortgage - is a type of secured loan that lets you borrow a lump sum against the equity you've built up in your home. Equity is the portion of your home's value that you own outright: your home's current market value minus any outstanding mortgage balance.
Example: If your home is worth $450,000 and you owe $180,000 on your mortgage, your home equity is $270,000. You won't be able to borrow the full $270,000 - lenders cap borrowing at a percentage of your home's value - but a meaningful portion is potentially available to you at interest rates far below credit cards or personal loans.
Key characteristics of a home equity loan:
Your home equity at any point in time is calculated as:
Home Equity = Current Market Value − Outstanding Mortgage Balance(s)
Your equity increases over time in two ways: as you make mortgage payments (reducing the principal balance), and as your home appreciates in value. In a rising real estate market, appreciation can build equity much faster than mortgage payments alone.
Example of equity growth: You bought a home for $350,000 with a $280,000 mortgage five years ago. You've paid down the mortgage to $255,000, and the home's market value has appreciated to $420,000. Your equity is now $420,000 − $255,000 = $165,000 - compared to $70,000 at purchase.
Keep in mind that home values fluctuate. If your home's value drops, so does your equity. Borrowing aggressively against equity leaves you vulnerable to becoming "underwater" (owing more than the home is worth) if values decline - a situation that became widespread during the 2008 housing crisis.
The Loan-to-Value ratio (LTV) is the key metric lenders use to determine how much you can borrow. It represents the total debt secured by your home as a percentage of the home's current appraised value:
Combined LTV = (Existing Mortgage Balance + New Home Equity Loan) ÷ Home Value × 100
Most lenders cap the combined LTV at 80%, meaning the total of your existing mortgage plus the new home equity loan cannot exceed 80% of the home's value. Some lenders extend this to 85% or 90% for well-qualified borrowers, but at higher interest rates and stricter qualification standards.
| Home Value | Mortgage Balance | LTV Cap | Max Combined Debt | Max Equity Loan |
|---|---|---|---|---|
| $400,000 | $200,000 | 80% | $320,000 | $120,000 |
| $400,000 | $200,000 | 85% | $340,000 | $140,000 |
| $400,000 | $200,000 | 90% | $360,000 | $160,000 |
| $600,000 | $350,000 | 80% | $480,000 | $130,000 |
| $600,000 | $150,000 | 80% | $480,000 | $330,000 |
Use the Maximum Loan Amount Estimator above to calculate your borrowing ceiling at different LTV ratios.
Home equity loan payments are calculated using the standard fixed-rate loan amortization formula - the same formula used for mortgages and auto loans:
Monthly Payment = P × [r(1+r)ⁿ] / [(1+r)ⁿ − 1]
Where: P = loan principal, r = monthly interest rate (annual rate ÷ 12), n = total number of monthly payments (years × 12).
Example: $100,000 loan at 8.5% for 15 years.
r = 8.5% ÷ 12 = 0.7083% per month = 0.007083
n = 15 × 12 = 180 payments
Monthly payment = $100,000 × [0.007083 × (1.007083)¹⁸⁰] / [(1.007083)¹⁸⁰ − 1] = $985.02/month
Total paid = $985.02 × 180 = $177,303.60
Total interest = $177,303.60 − $100,000 = $77,303.60
Early payments in an amortization schedule are interest-heavy - more of each payment goes toward interest than principal. Over time, this gradually reverses as the balance decreases and interest charges shrink. The full month-by-month and year-by-year amortization schedule is shown in our calculator after you click Calculate.
To qualify for a home equity loan, lenders evaluate several factors beyond just how much equity you have:
Most lenders require a minimum credit score of 620 to qualify at all. However, the rate you receive depends heavily on your score:
Your debt-to-income ratio is your total monthly debt payments divided by your gross monthly income. Lenders use DTI to assess your ability to handle additional debt. Most require a DTI of 43% or below, though some lenders accept up to 50%. Lower DTI ratios generally result in better rates and easier approval.
Example: If your gross monthly income is $8,000 and your monthly debts (mortgage, car payment, credit cards, student loans) total $3,000, your DTI is 37.5% - comfortably within most lenders' limits.
You generally need at least 15–20% equity remaining after the loan - meaning most lenders won't let you borrow up to 100% LTV. If your home has declined in value since you bought it, or if you recently purchased with a small down payment, you may not have sufficient equity to qualify yet.
Lenders verify stable employment and income history, typically requiring two years of W-2s or tax returns (for self-employed borrowers), recent pay stubs, and bank statements. Self-employed borrowers may face additional scrutiny.
The interest rate is only part of the true cost. Home equity loans typically carry upfront closing costs of 2%–5% of the loan amount. On a $100,000 loan, that's $2,000–$5,000 in fees before you see a single dollar of the proceeds. Common closing costs include:
Some lenders advertise "no closing cost" home equity loans - but in these cases, the costs are typically recouped through a slightly higher interest rate. Over a 15-year term, paying a higher rate can cost significantly more than the upfront fees. Our calculator lets you include closing costs and choose whether they are deducted from the loan proceeds or paid upfront, and then computes the true APR so you can compare offers on an apples-to-apples basis.
The two most common ways to access home equity are home equity loans and Home Equity Lines of Credit (HELOCs). They serve different financial needs:
| Feature | Home Equity Loan | HELOC |
|---|---|---|
| Disbursement | Lump sum at closing | Draw as needed during draw period |
| Interest rate | Fixed | Variable (tied to prime rate) |
| Monthly payment | Fixed, predictable | Varies with balance and rate |
| Draw period | None - one-time draw | Typically 5–10 years |
| Repayment period | 5–20 years | 10–20 years after draw period ends |
| Best for | Single large expense (renovation, debt payoff) | Ongoing or uncertain expenses |
| Rate risk | None - rate is locked | Rate can rise with prime rate |
Choose a home equity loan when you need a specific amount for a defined purpose and want the certainty of a fixed payment. Choose a HELOC when your funding needs are ongoing or uncertain - such as a multi-phase home renovation or a business with variable capital needs - and when you're comfortable with variable-rate risk.
A cash-out refinance replaces your existing first mortgage with a new, larger mortgage - and you receive the difference between the new loan amount and the old balance in cash at closing. This differs fundamentally from a home equity loan, which is a separate second mortgage that sits alongside your original mortgage.
When to consider a cash-out refinance instead:
When a home equity loan is preferable:
This is the most common - and often the most financially sound - use of home equity. Kitchen remodels, bathroom additions, roof replacements, and energy-efficiency upgrades can increase your home's market value, potentially recovering a significant portion of the cost when you eventually sell. Borrowing equity to invest back into the home it's secured by is a logical and lender-approved use of the proceeds.
If you carry high-interest credit card debt (often 20%–30% APR), consolidating into a home equity loan at 7%–10% can save thousands of dollars in interest and simplify monthly payments. The critical discipline required: do not run up the credit card balances again after paying them off with the equity loan. Doing so puts your home at risk while doubling your debt load.
Home equity loans often offer lower rates than private student loans, making them an alternative for funding college or graduate school. However, unlike federal student loans, home equity loans carry no income-driven repayment options, deferment periods, or forgiveness programs - and they put your home at risk. Exhaust federal student loan options first.
Large unexpected medical bills - particularly those not covered by insurance - can be financed with a home equity loan at rates far below medical credit products or personal loans. The fixed payment structure makes repayment manageable over a multi-year term.
Some homeowners use a small home equity loan to establish an emergency reserve - though a HELOC is typically better for this purpose since you only borrow (and pay interest on) what you actually draw.
The Tax Cuts and Jobs Act of 2017 changed the rules on home equity loan interest deductibility. Under current law (through at least 2025):
Because most home equity loans are used for purposes other than home improvement, most borrowers cannot deduct the interest. Always consult a qualified tax professional about your specific situation before assuming deductibility.
The most important risk to understand: your home is the collateral. If you default on a home equity loan, the lender can initiate foreclosure proceedings - potentially causing you to lose your home even if you are current on your primary mortgage. This is fundamentally different from defaulting on an unsecured personal loan or credit card, where the consequences (though serious) do not include losing your home.
Additional risks include:
They are the same thing. A home equity loan is a second mortgage - a loan secured by your home that sits alongside your primary (first) mortgage. The term "second mortgage" simply indicates its lien position: if you default and the home is sold, the primary mortgage lender is repaid first, and the home equity lender (second in line) is repaid from whatever remains. Because the second lien position carries more risk for the lender, home equity loan rates are typically slightly higher than first mortgage rates.
Only in specific circumstances. Under the Tax Cuts and Jobs Act of 2017, home equity loan interest is deductible only if the funds are used to buy, build, or substantially improve the home that secures the loan - and only if you itemize deductions rather than taking the standard deduction. Interest on home equity loans used for debt consolidation, personal expenses, or other purposes is not deductible. Since the 2017 law nearly doubled the standard deduction, fewer taxpayers itemize, making the deduction unavailable even when the use qualifies. Consult a tax professional for guidance specific to your situation.
Most lenders require a minimum credit score of 620. However, qualifying at 620 and getting a good rate at 620 are very different things. Borrowers with scores of 700 or above will typically receive meaningfully lower rates - potentially saving tens of thousands of dollars in interest over the life of a large loan. Before applying, check your credit report for errors and take steps to improve your score if possible.
The process typically takes 2 to 6 weeks from application to funding. The timeline includes a home appraisal (scheduled separately and typically taking 1–2 weeks), underwriting review, title search, and loan closing. Some lenders offer expedited processes (particularly for smaller loan amounts and strong applicants), while others - especially during periods of high refinancing volume - may take longer. Plan accordingly if you need funds by a specific date.
Yes, but it can be more complicated. Self-employed borrowers typically need to provide two years of tax returns (both personal and business), a year-to-date profit and loss statement, and bank statements. Lenders use the net income reported on tax returns - not gross revenue - to calculate qualifying income, which can result in a lower qualifying income than self-employed borrowers expect. Keeping tax returns clean and demonstrating stable, consistent income is essential for self-employed applicants.
When you sell your home, both your primary mortgage and your home equity loan are paid off from the sale proceeds at closing. The title company or closing attorney handles disbursement: the first mortgage lender is paid off, then the home equity lender, and you receive any remaining proceeds (your net equity after all costs). You cannot simply transfer an existing home equity loan to a new property - it is specific to the home that secures it.
A home equity loan almost always offers a lower interest rate than an unsecured personal loan because it is secured by your home. For large amounts ($25,000 and above) over longer terms, the interest savings can be substantial. However, personal loans don't put your home at risk - if you default, you face credit damage and potential legal action, but not foreclosure. For smaller amounts, shorter repayment periods, or when the application timeline is critical, a personal loan's speed and simplicity may outweigh the rate advantage. Closing costs on a home equity loan can also make it uneconomical for small loan amounts.