Start with your signed agreement and the cancellation instructions for your ADT system. Ask for the effective end date and an itemized final balance. The service term, equipment financing and any return requirements are separate checks.
Before you cancel — separate the charges
If your agreement uses a 75% early-termination charge on remaining monthly service charges, a hypothetical 18 months at $50/month gives 18 × $50 × 0.75 = $675. This is an example, not an ADT plan quote or your total payoff. Request equipment, notice-period and other balances separately. Check the fee calculation and contract exceptions →
Use the six steps below to make the request, keep proof and check the final bill. Cancellation rights and procedures can differ by agreement, system and applicable law.
Not sure canceling is the right path? Start with the ADT recovery guide before you call — it helps you compare keeping, changing or ending service. ADT recovery guide →
Affiliate disclosure: SecurityCompassHQ may earn commissions from some links on this page, including as an Amazon Associate when you purchase through Amazon links. Commissions do not determine our recommendations. See full disclosure →
Check your contract terms
Gather your signed service agreement, latest bill, equipment-finance agreement and order confirmation. Write down the initial-term end date, renewal and notice terms, and any return deadline. Request missing documents from ADT before relying on a generic fee formula.
Compare the full cost of your options
Ask for an itemized cancellation quote, then compare it with the cost of keeping service until your intended end date. Include any replacement service and remaining equipment payments in both options. Do not assume waiting is cheaper just because the contract is nearly over.
Use the route for your specific ADT system
Use the contact details on your bill or ADT’s official support site. ADT Blu terms also point to 888-392-2039 or instructions in your order confirmation. Have your account number and service address ready. Ask which notice method applies before sending sensitive information.
Request a cancellation confirmation number
Request a reference number, the service-stop date and the final amount or itemized estimate in writing. Keep the date and representative’s name. Ask whether the request is complete or whether ADT still needs written notice, documents or returned equipment.
Follow up in writing
Follow the notice instructions in your agreement or the applicable cancellation process. Confirm the correct recipient and delivery method with ADT; do not guess a regional-office address. Save the notice, proof of delivery and any return tracking. A phone reference alone may not meet a written-notice requirement.
Monitor your bank statement
Compare subsequent statements with the confirmed stop date and final balance. Ask ADT promptly about unexplained charges and keep the reply. If you need to dispute a payment, contact your card issuer or bank about its process and deadlines. Turning off AutoPay is not a substitute for canceling service.
Check each provider’s current monitoring terms, equipment cost and required features. A flexible monitoring subscription does not automatically cancel a separate equipment balance.
SimpliSafe
Check monitoring and equipment separately
Compare the equipment package, monitoring options and return terms for the setup you would actually buy.
Full review →Ring Alarm
Check the exact Ring plan
Confirm alarm-monitoring availability, any required add-on and camera-recording requirements before choosing a plan.
Full review →Cove Security
Check total cost and renewal terms
Compare monitoring tiers, equipment payments and cancellation instructions against your current agreement.
Full review →Not sure you want to cancel yet?
If the ETF is too high right now, there may be ways to lower your bill without canceling — and it's worth running the math before you decide.
Related reading: Before signing an ADT contract — check the exact term and obligations · ADT authorized dealer vs corporate — what’s different and why it matters for your ETF and service terms
Checked October 6, 2026. This is a research-based checklist, not a review of your individual agreement. Use the version you signed and the rules that apply to your situation.
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