Home Equity Calculator

Follow these steps to accurately calculate your current home equity and projected growth using this calculator.

1. Estimate Your Current Home Value: Start by determining the current market value of your property. You can use online valuation tools such as Zillow, Redfin, or Realtor.com for a rough estimate based on comparable recent sales in your area. For a more precise figure, consider ordering a professional appraisal, which typically costs between $300 and $500. Your county tax assessor's valuation can also provide a baseline, though assessed values often lag behind actual market conditions.
2. Find Your Remaining Mortgage Balance: Log into your mortgage servicer's online portal or check your most recent monthly statement to find your current outstanding balance. This is the principal amount you still owe, not the original loan amount. If you have been making payments for several years, your balance may be significantly lower than when you first purchased the home.
3. Enter Other Liens: Include the outstanding balance of any second mortgages, existing HELOCs, home equity loans, or other liens recorded against the property. These debts reduce your available equity just as your primary mortgage does.
4. Provide Your Monthly Payment: Enter your current monthly mortgage payment amount, including both principal and interest. Do not include escrow amounts for property taxes or homeowners insurance, as those do not affect your equity calculation.
5. Enter Your Interest Rate and Remaining Term: Input your current mortgage interest rate and the number of years remaining on your loan. The calculator uses these values to project how your equity will grow over the next five years as you continue making regular payments.

After entering all details, the calculator instantly displays your current equity, equity percentage, LTV ratio, available borrowing capacity, and a five-year equity growth projection. Adjust the inputs to model different scenarios, such as the impact of making extra principal payments or how a change in home value would affect your equity position.

Home equity is the portion of your home that you truly own, calculated as the current market value of your property minus all outstanding debts secured against it, including your primary mortgage, any home equity loans, HELOCs, and other liens. For most American homeowners, home equity represents the single largest component of their net worth, making it one of the most important financial metrics to understand and track over time.

Home equity builds through two primary mechanisms. First, every monthly mortgage payment you make reduces your loan balance, with an increasing share of each payment going toward principal as the loan matures. In the early years of a 30-year mortgage, the majority of your payment covers interest, but over time the balance shifts dramatically toward principal reduction. Second, property appreciation increases your home's market value without requiring any action on your part. Historically, U.S. home values have appreciated at an average rate of three to four percent annually, though this varies significantly by location, market conditions, and economic cycles.

Homeowners can access their equity through two main financial products: a home equity loan and a home equity line of credit (HELOC). A home equity loan provides a lump sum at a fixed interest rate, functioning like a second mortgage with predictable monthly payments. A HELOC works more like a credit card, offering a revolving line of credit you can draw from as needed, typically at a variable interest rate. Both options are commonly used for home renovations, debt consolidation, education expenses, and major purchases.

However, tapping into home equity carries real risks. Because your home serves as collateral, failure to repay a home equity loan or HELOC could result in foreclosure. Financial advisors generally recommend using equity only for investments that build long-term value, such as home improvements that increase property worth or consolidating high-interest credit card debt into a lower-rate loan. Avoid using home equity for depreciating purchases like vacations or vehicles.

The loan-to-value (LTV) ratio is a critical metric that lenders use to evaluate risk and determine how much equity you can borrow against. Most lenders require an LTV of 80 percent or lower before approving a HELOC or home equity loan, meaning you need at least 20 percent equity in your home to qualify for these products.

The following formulas are used to calculate your home equity and related metrics:

Core Equity Formula

Home Equity = Current Home Value - Total Outstanding Debt

Where Total Outstanding Debt includes your primary mortgage balance, any second mortgages, HELOCs, and other liens secured by the property. This gives you the dollar amount of your ownership stake in the home.

Equity Percentage

Equity Percentage = (Home Equity / Current Home Value) × 100

This expresses your equity as a percentage of the total property value, making it easier to compare across properties of different values and to track your progress over time.

Loan-to-Value (LTV) Ratio

LTV Ratio = (Total Outstanding Debt / Current Home Value) × 100

The LTV ratio is the inverse of equity percentage and is the metric most lenders focus on when evaluating borrowing applications. An LTV of 75 percent means you owe 75 percent of your home's value and own 25 percent as equity. Lenders prefer lower LTV ratios because they indicate less risk.

Available Equity (Borrowable Amount)

Available Equity = (Current Home Value × 0.80) - Total Outstanding Debt

Most lenders cap borrowing at 80 percent of your home's value. This formula calculates the maximum additional amount you could borrow through a HELOC or home equity loan while staying within the standard 80 percent LTV limit. If the result is negative, you do not have enough equity to qualify for additional borrowing under standard guidelines.

Variable Definitions

Example 1: New Homeowner with Low Equity

Sarah recently purchased her first home for $350,000 with a 10 percent down payment, taking out a $315,000 mortgage. After one year of payments, her remaining mortgage balance is approximately $311,500. No other liens exist on the property.

• Home Equity: $350,000 - $311,500 = $38,500
• Equity Percentage: ($38,500 / $350,000) × 100 = 11.0%
• LTV Ratio: ($311,500 / $350,000) × 100 = 89.0%
• Available HELOC: ($350,000 × 0.80) - $311,500 = -$31,500 (not eligible)

Sarah does not yet qualify for a HELOC because her LTV is above 80 percent. She needs to build more equity through continued payments or home appreciation before she can borrow against her home.

Example 2: Long-Term Owner with High Equity

Michael purchased his home 18 years ago for $250,000 with a $200,000 mortgage. After years of payments, his remaining balance is $62,000. The home has appreciated to a current market value of $475,000.

• Home Equity: $475,000 - $62,000 = $413,000
• Equity Percentage: ($413,000 / $475,000) × 100 = 86.9%
• LTV Ratio: ($62,000 / $475,000) × 100 = 13.1%
• Available HELOC: ($475,000 × 0.80) - $62,000 = $318,000

Michael has substantial equity built through both mortgage paydown and property appreciation. He could access up to $318,000 through a HELOC while maintaining an 80 percent LTV.

Example 3: Post-Renovation Value Increase

Lisa owns a home currently valued at $400,000 with a mortgage balance of $280,000. She invests $45,000 in a kitchen and bathroom renovation, which increases her home's appraised value to $470,000. Her mortgage balance remains unchanged at $280,000.

• Before Renovation: Equity = $400,000 - $280,000 = $120,000 (30.0% equity, 70.0% LTV)
• After Renovation: Equity = $470,000 - $280,000 = $190,000 (40.4% equity, 59.6% LTV)
• Available HELOC Before: ($400,000 × 0.80) - $280,000 = $40,000
• Available HELOC After: ($470,000 × 0.80) - $280,000 = $96,000

By investing $45,000 in renovations, Lisa increased her home's value by $70,000, gaining $25,000 in additional equity beyond the renovation cost. Her available HELOC more than doubled from $40,000 to $96,000, demonstrating how strategic home improvements can significantly boost both equity and borrowing capacity.