How to Cancel ADT Without Overpaying

The actual cancellation process

ADT's support page lays out two paths, and which one you get depends on how you bought the system:

1. Bought online (Self Setup or online order): Log in and use the cancellation form. MyADT users: myadt.com, then Account, then Manage Subscriptions. ADT+ users: plus.adt.com, then Billing, then Cancel Subscription under Manage Subscriptions.
2. Bought through a sales rep or installer (most pro install customers): There is no online form for you. Call 1-800-ADT-ASAP (1-800-238-2727).

ADT states it cannot accept cancellation requests via email, for security reasons. Before calling, pull your contract: MyADT customers can find it under their account documents, and ADT+ customers received it by email at purchase. ADT's support pages also explain how to locate your contract end date in MyADT (Account, then Account Documents, then View Contract End Date), which is the single most important number in the whole process.

Before you call, decide whether any lower rate would keep you as a customer. The useful preparation either way is knowing your contract end date, your current monthly rate, and what the alternatives cost, which is covered below.

What canceling early actually costs

ADT professional install service runs on a 36 month monitoring contract (24 months in California). ADT's residential terms state that upon early termination, ADT may charge 75% of the monthly service charges due for the balance of the initial term.

The arithmetic is worth doing before you call. At the $59.99/mo rate ADT's current promotions list as their starting point (as of August 2026):

Three situations change this math:

• Past the initial term: Once the 36 months are served, the early termination clause no longer applies to the initial term. Verify your end date first; canceling one month early versus one month late can be a four figure difference.
• Self Setup customers: ADT's self setup pricing requires only a one month minimum of monitoring, so there is no multi-year term to buy out.
• The 6 month money back guarantee: This is narrow. It applies only after ADT has attempted and failed to resolve a system related issue within the first six months, requires continuous payment of monitoring plus the Quality Service Plan, and requires returning the equipment. It is a remedy for a system that does not work, not a general exit.

If you are canceling because of price or a move

Moving: Do not treat a move as a plain cancellation before talking to ADT's movers line at (866) 321-4238, at least 30 days ahead. ADT's moving page says contracts are typically tied to the home's location and in most cases must be addressed when you move, but it also advertises exclusive savings for relocating customers, and transferring the system to the home's next occupant can be discussed on the same call. Providers differ widely here: self installed systems like SimpliSafe and Ring simply move with you, while Vivint publishes a dedicated moves program.

Price: If the monthly fee is the reason, know the market before the retention conversation. As of August 2026, published no-contract professional monitoring runs $19.99/mo at Ring and $22.99 to $32.99/mo at SimpliSafe, versus ADT's published pro install starting rates of $49.99 to $59.99/mo. The comparison pages at cheapest-professional-monitoring and home security cost per month put those numbers in context, and if you still want professional monitoring after leaving ADT, our quote tool fetches real quotes from providers through a short questionnaire so you are not canceling into a vacuum.

Keep protection continuous. Monitoring is safety infrastructure. If dispatch matters to your household (see is professional monitoring worth it), line up the replacement system before the ADT service actually stops rather than leaving a gap.