What Is Home Equity?
Home equity is the portion of your home that you actually own — the difference between your home's current market value and the outstanding balance on your mortgage. If you are trying to figure out how to calculate home equity, the core formula is simple and it gives you a quick starting point for refinancing, removing PMI, or borrowing against your home.
Home Equity = Current Home Value − Outstanding Mortgage Balance
For example, if your home is worth $350,000 and you owe $220,000 on your mortgage, your equity is $130,000, or about 37% of the home's value.
Equity is not just a number on paper. It is a financial asset you may be able to tap through a home equity loan, a HELOC, or cash-out refinancing — and it grows over time as you pay down your mortgage and as property values rise.
Calculate Your Home Equity Now
How Down Payment Affects Your Starting Equity
Your equity journey begins the moment you buy. The more you put down, the more equity you start with — and the less you'll pay in interest over the life of the loan.
| Down Payment | Purchase Price | Starting Equity | Starting LTV |
|---|---|---|---|
| 3% | $300,000 | $9,000 | 97% |
| 5% | $300,000 | $15,000 | 95% |
| 10% | $300,000 | $30,000 | 90% |
| 20% | $300,000 | $60,000 | 80% |
| 25% | $300,000 | $75,000 | 75% |
A 20% down payment not only gives you a solid equity cushion — it also eliminates the need for private mortgage insurance (PMI), which can save you hundreds of dollars per year.
Understanding LTV (Loan-to-Value Ratio)
LTV is the flip side of equity. It measures how much you owe relative to what your home is worth:
LTV = (Mortgage Balance ÷ Home Value) × 100
Lenders use LTV to assess risk. Here's what different LTV levels mean for you:
- LTV above 80% — You're likely paying PMI; fewer refinance options
- LTV at 80% — Sweet spot for conventional loans; PMI can be removed
- LTV at 75% or below — Better interest rates available; stronger refinance position
- LTV at 60% or below — Excellent rates; maximum borrowing flexibility
Use our mortgage calculator to see how different loan amounts and interest rates affect your monthly payment.
Two Ways Equity Grows
1. Mortgage Paydown
Every monthly payment reduces your principal balance, slowly but steadily increasing your equity. In the early years of a 30-year mortgage, most of your payment goes toward interest. As the loan matures, the balance shifts — you pay more principal and less interest each month.
This is called amortization, and it means equity builds slowly at first, then accelerates.
2. Home Value Appreciation
Property values in most markets increase over time. Even without paying a single extra dollar on your mortgage, your equity can grow if your home appreciates.
If you bought a $300,000 home with $60,000 down (20%), and the home appreciates to $360,000 over 5 years, your equity increases by $60,000 from appreciation alone — on top of the principal you've paid down.
Strategies to Build Equity Faster
Make extra principal payments. Even an extra $100–$200/month applied to your principal can shave years off your mortgage and save tens of thousands in interest. Check with your loan calculator to see the impact.
Biweekly payments. Instead of 12 monthly payments, make 26 half-payments per year. You'll effectively make one extra full payment annually — reducing a 30-year loan by about 4–5 years.
Refinance to a shorter term. Switching from a 30-year to a 15-year mortgage dramatically accelerates equity building, though your monthly payment will be higher.
Make targeted home improvements. Kitchen and bathroom upgrades typically return 60–80% of their cost in added home value. Curb appeal improvements like landscaping and exterior paint often have strong returns as well.
Avoid cash-out refinancing unless absolutely necessary. While you can access equity this way, it resets your LTV and can slow your equity-building progress significantly.
How to Use Your Home Equity
Once you've built substantial equity, several options become available:
- HELOC (Home Equity Line of Credit) — A revolving credit line, similar to a credit card, secured by your home. Flexible for ongoing expenses. See how it works with our HELOC calculator.
- Home Equity Loan — A lump-sum loan at a fixed rate, often used for large one-time expenses like major renovations.
- Cash-Out Refinance — Replace your existing mortgage with a larger one and take the difference in cash.
How Much Equity Can You Borrow Against?
Most lenders allow you to borrow up to 80–85% of your home's value, minus what you owe. The formula:
Maximum Borrowable = (Home Value × 0.80) − Mortgage Balance
Example: Home worth $400,000, mortgage balance $200,000:
- Maximum borrowable = ($400,000 × 0.80) − $200,000 = $120,000
If you want to estimate the payment pattern after borrowing, use our loan calculator for a fixed-payment scenario or our HELOC calculator for a revolving credit line.
Key Takeaways
- Home equity = current home value minus your mortgage balance
- LTV is the inverse of equity — lower LTV means more equity and better loan terms
- Equity builds through mortgage payments and home value appreciation
- Extra principal payments are the fastest DIY way to build equity
- Once you reach 20% equity, you can remove PMI on conventional loans
- Equity can be accessed through a HELOC, home equity loan, or cash-out refi — but each comes with costs and risks