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How to Cancel ADT Security

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Quick Facts

Customer Service
1-800-238-2727
Visit Official Cancellation Page
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Step-by-Step Guide

  1. 1Review your ADT contract for terms and conditions.
  2. 2Gather your ADT account number and personal details.
  3. 3Call ADT Customer Service at 1-800-238-2727.
  4. 4Clearly state your intention to cancel your service.
  5. 5Discuss any remaining contract obligations or early termination fees.
  6. 6Confirm the exact cancellation date and equipment return instructions.

Switch & Save

Consider these great alternatives to ADT Security:

SimpliSafe

DIY, no long-term contracts.

Try SimpliSafe

Ring Alarm

Affordable, smart home integration.

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Switch & Save

Consider these great alternatives to ADT Security:

SimpliSafe

DIY, no long-term contracts.

Try SimpliSafe

Ring Alarm

Affordable, smart home integration.

Try Ring

Last updated: November 28, 2025