If you signed a contract with a home security provider, chances are you will have to pay a fee if you choose to cancel. Some companies will let you find someone qualified to take over your contract, but usually, you'll end up paying out a large portion of the remainder of your contract. The exact amount depends on which security company you signed up with and how long you have left on your contract. Before signing with anyone, check their early termination policy to ensure it's one you can afford should you need to cancel.