This is a high-lock-in system — read this before signing
Some ADT professionally installed offers require a 36-month monitoring agreement (24 months in California). ADT says early termination during the initial term may cost 75% of the remaining monthly monitoring charges. Your signed offer controls the term, rate, and fee. Review ADT’s published terms and your agreement before signing.
ADT offers professional monitoring and multiple installation paths. This guide helps you compare the written term, costs, seller, equipment, and cancellation provisions with what you were told before signing.
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The six contract terms that matter most before signing. Read these in the actual contract document — not a verbal summary, not a quote sheet.
| Term | What the contract says | Pre-sign note |
|---|---|---|
| Contract term | 36 months in some offers; 24 months in California for certain offers | Your contract states the exact term — verify before signing |
| Monthly monitoring | Offer-specific; use the written monthly rate | Verify the exact rate locked in your contract, not the quoted rate |
| Early termination fee | ~75% of remaining monthly charges | Illustrative $49.99/mo rate: 36 months remaining = $1,349.73; 35 remaining = $1,312.24 |
| Rate increase clause | Often present — annual increases possible | Verify whether your monthly rate is locked for the full term |
| Equipment ownership | Varies by contract type | Confirm ownership, financing balance, and compatibility for each device |
| Cancellation notice | Notice method and timing vary by agreement | Contract specifies the required notice period; missing it can extend your obligation |
ETF exposure at a glance
Illustrative 36-month agreement at $49.99/mo (not a current price quote): 36 months remaining = $1,349.73; after one paid month (35 remaining) = $1,312.24; with 24 months remaining = $899.82; with 18 remaining = $674.87. Calculate your exact exposure at any month using the ETF Calculator below.
Have ADT’s written quote or contract in front of you?
Paste the terms into the Quote Decoder — it flags ETF clauses, rate-increase provisions, and dealer vs. corporate discrepancies automatically.
Confirm whether you are signing with ADT corporate or an authorized dealer
Read the seller and service-provider names in the written agreement. If an authorized dealer is involved, compare its written pricing, equipment, cancellation, and contact terms with the quote. Ask who handles service and billing before signing.
Calculate your maximum ETF exposure before signing
If your specific offer permits a 75% early termination charge, multiply the service rate by the number of months remaining and then by 0.75. At an illustrative $49.99 rate, 36 remaining months produce $1,349.73; after one paid month, 35 remaining months produce $1,312.24. This rate is not a current quote. Enter your actual written rate and term in the ETF Calculator.
Read the rate increase clause before signing
ADT contracts may contain provisions for monitoring-rate changes. If your contract contains this clause, the rate you sign at is not guaranteed for the full term. Identify whether the clause exists, what the cap is, and whether you can exit without ETF if the rate increases beyond a stated threshold. If the rep told you your rate is locked, find that in writing in the contract before signing.
Get the full contract in writing before installation day
ADT reps sometimes present the contract and begin installation on the same visit. Signing under same-day pressure leaves no time for contract review. Request the contract in advance of the installation appointment. If you cannot get the contract document before the installer arrives, ask to reschedule the installation until you have had time to review. No legitimate sales process requires you to review and sign a multi-year monitoring agreement with a potentially substantial exit cost in the same hour the installer arrives.
Signing with an authorized dealer without realizing it
Check which company is named as seller and service provider. Dealer arrangements may have different written terms, so confirm who bills you, supports the system, and handles cancellation. Keep a copy of the signed agreement.
Not calculating the ETF before signing
Calculate the possible charge under your actual offer before signing. As an illustration only, at $49.99 per month and 75% of remaining service charges, 35 months remaining is $1,312.24 and 28 months remaining is $1,049.79. The $49.99 rate is not a current quote. Use the ETF Calculator with your written terms.
Assuming the equipment can be taken or reused
Do not assume every device can be reused or must be replaced. Record each model and ask who owns it, whether a balance remains, whether it must be returned, and what other systems or services support it. Check the written moving and transfer terms before signing.
Signing on the same day as installation under sales-visit pressure
The pattern of “sign now and we’ll start installing immediately” is common in ADT sales and leaves no time for contract review. A multi-year agreement with a potentially substantial exit cost is not something to sign under same-day pressure. Request the contract before the installation appointment. If the installer arrives before you’ve read the contract, ask to reschedule. Any sales process that makes contract review conditional on same-day signing is a pressure tactic.
Use the pre-sign tools to verify your written offer and understand potential exit costs before you sign.
Use in order: Step 1 — Quote red flags (manual scan) · Step 2 — Quote Decoder (below) · Step 3 — ETF Calculator (model your exit cost before committing to 36 months)
Related reading: Full pre-sign system — stage-by-stage buyer-defense workflow before any home security contract · 12 questions to ask before signing — what any ADT rep should answer in writing · ADT contract length — what the 36-month commitment means financially · ADT cancellation fee — the 75% ETF formula with worked examples at every month of the contract · How to read a home security contract — 8-clause verification guide for ADT and other contracted systems · ADT review — 2026 full evaluation, scores, and ideal buyer profile · SimpliSafe vs ADT — full comparison for contract-wary buyers · Before signing a Vivint contract — equipment loan, monitoring separation, and what to verify · ADT authorized dealer vs corporate — what’s different, and how to find out which one you’re signing with
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