When you put 20% down on a home using a mortgage loan, you own 20% and the lender owns 80%. As you make payments, most of the money goes to pay interest while some goes toward reducing your principal. Meanwhile, favorable market conditions may be increasing the market value of your home, giving you instant equity.

Equity is the amount of the home that you own, much like a savings account that pays interest on money you want to keep growing. After a few years, you may want to tap into that money to carry out home improvements, make a down payment on a second property, or pay off credit cards and other bills. Is it a good idea to use your equity?

The answer is this: you’re putting your home in deeper debt, so your reasons for using equity instead of another means of borrowing or consolidating must be worth the risk.

Home improvements are designed to add value to your home, a sure thing that will net you more money when you decide to sell it one day. Making a down payment on another home is riskier—as you’ll have two mortgages—but if you can afford it, you’ll have two properties potentially building equity.

Credit cards are unsecured debt so interest rates are high. Home equity loans are far less costly, so you could get much relief by paying credit cards off. However, you must avoid “reloading” the cards with new charges, which will take dedication and self-discipline.