An early termination fee of 75% of your monthly service charge will be due on the remaining balance of the initial contract term. There are additional charges for the guard response service for municipal alarm verification. All equipment remains the property of ADT. Prices are subject to change and may vary by market.Click to see full answer. Also know, what happens if I cancel my ADT service?Just be sure to call and cancel before your ADT contract automatically ends. Otherwise, your contract will renew for another one to five years. You should also pay attention to any cancellation or payoff fees. In many cases, the cancellation fee is 75 percent of the remaining contract.Beside above, can I cancel my ADT service online? We can’t cancel your service online, so call us to talk about what we can do for you. People also ask, how do I cancel my ADT account? You need to call 1-800-243-1748 and talk to one of their customer retention specialists. This is the only way that ADT recognizes your initial request to cancel service. Be prepared and have the following information handy: Your name, address, and phone number.How can I reduce my ADT bill? Steps to Negotiate Lower Rates with ADT Research your local competition. Call local home security monitoring companies for price list. Call ADT for Retention or Bill Representative. ADT Cancellation Fee. State Alternatives to ADT to Representative. Counter-Offer or Ask for an Upgrade. Home Alarm Monitoring No Contract.