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How to Cancel SimpliSafe

We write the letter your contract calls for, you sign it on your phone, and we mail it certified. You get tracking and proof it was delivered. $29, paid when you order.

This guide covers how to cancel SimpliSafe. Every detail comes from the sources linked at the bottom, and we leave out anything they don't say.

SimpliSafe cancellation at a glance

Letter accepted
How to cancel
Online, by phone, by mail or by live chat
Mail to
SimpliSafe, Inc., 100 Summer Street, 3rd Floor, Boston, MA 02110
Phone numbers
  • 1-888-783-8441Listed in SimpliSafe's cancellation help article
  • 1-800-548-9508Listed in the Terms of Service, Section 2
  • 1-888-910-1458Support line on the contact page, every day 8 a.m. to midnight EST
Online
simplisafe.com/
Notice period
None. Notice is effective upon SimpliSafe's receipt and confirmation; cancelling before the billing date avoids the next month's charge.
Written notice
Accepted
Mail it for me, $29Do it myself

What you'll need

The sources we checked say SimpliSafe asks for:

  • Request must come from the Account Owner
  • Account holder security questions or Safe Word verification (SimpliSafe may call to confirm a written request)
  • Requested future cancellation date, if not immediate (optional)

How to cancel SimpliSafe: do-it-yourself steps

  1. Write a short letter that says you're cancelling. Include your full name, your account or member number, your address and the date you want billing to stop. Sign and date it. Add anything listed under What you'll need.
  2. Mail it to SimpliSafe at: SimpliSafe, Inc., 100 Summer Street, 3rd Floor, Boston, MA 02110. The terms we checked don't ask for certified mail. Sending it certified still gets you a delivery record.
  3. Mind the notice period: None. Notice is effective upon SimpliSafe's receipt and confirmation; cancelling before the billing date avoids the next month's charge.
  4. Keep a copy of the letter and your mailing receipt. Check your next statement to make sure the charges stopped.

SimpliSafe also takes cancellations online, by phone or by live chat. Phone: 1-888-783-8441 (Listed in SimpliSafe's cancellation help article); 1-800-548-9508 (Listed in the Terms of Service, Section 2); 1-888-910-1458 (Support line on the contact page, every day 8 a.m. to midnight EST). Online: https://simplisafe.com/.

Free SimpliSafe cancellation letter preview

This is the letter we send, with your details filled in. Copy it to send yourself, or have us mail it.

SimpliSafe cancellation letter
[Your full name] [Street address] [City], [State] [ZIP] [Email] [Phone] [Date] SimpliSafe SimpliSafe, Inc., 100 Summer Street, 3rd Floor, Boston, MA 02110 Re: Written notice of cancellation Account holder: [Your full name] Account or member number: [Account or member number] To SimpliSafe: This letter is my written notice that I am cancelling my SimpliSafe account and all services under it, effective [Effective date]. Please stop all billing on this account after [Effective date]. I do not authorize any charges for any period after that date. Please send written confirmation of this cancellation to me by email at [Email] and by mail to the address above. Sincerely, [Your full name]
Mail it for me, $29More about the SimpliSafe cancellation letter

Fees and contract notes

Refunds

Month-to-month, no termination fees. Unearned charges are refunded for any full calendar month after termination; no refund for a partial month. Unused prepaid months are refunded to the payment method on file or directly. Promotions tied to prepaid service may be contingent on keeping the subscription through the prepaid period (SimpliSafe may let you keep them).

State differences

Online cancellation is available only for residents of some cities and states, and SimpliSafe doesn't name them. Online cancellation is offered only where required for residents of specific cities and states (not named). Tennessee notice in the Terms points to Section 2 and the Terms of Sale for refunds and termination fees. No other state-specific cancellation rules published.

Why send your SimpliSafe letter certified

USPS Certified Mail gives you a mailing receipt and a tracking number, and the Postal Service records when the letter is delivered. That record is what you point to if the company says it never got your notice.

Some contracts require certified mail. Others only ask for written notice, and certified mail is still the safest way to send it. Some contracts count notice from the day the letter arrives and others from the postmark date. The USPS record shows both.

Regular mail leaves you with nothing to show. A letter can sit in a mailroom, get misrouted or get thrown away, and you have no way to prove when, or whether, it arrived.

When we mail a letter for you, it goes USPS Certified within one business day of your order, and we email you the tracking number. You can follow it on the USPS site until it's delivered. The price is $29, paid when you order.

If SimpliSafe keeps charging you after you cancel

Check the dates first. A charge that covers your notice period or the last billing cycle may be allowed by your contract. A charge for a period after your cancellation date usually isn't.

  1. Contact the company in writing. Say when you cancelled and how, and ask them to refund every charge after your cancellation date. Include your proof.
  2. If they don't fix it, dispute the charge with your bank or card issuer. Give the cancellation date and send the proof: a copy of your letter and the USPS delivery record, or the confirmation number from your call.
  3. If charges keep coming, ask your bank whether it can block future payments to that company.
  4. File a complaint with your state attorney general's consumer protection office. It creates a record, and some companies respond faster once one is filed.

Banks and card issuers set deadlines for disputes, usually counted from the statement date. Don't wait for several months of charges to pile up before you act.

SimpliSafe cancellation FAQ

Can I cancel SimpliSafe by mail?

Yes. SimpliSafe accepts written notice by mail. The mailing address in our sources is SimpliSafe, Inc., 100 Summer Street, 3rd Floor, Boston, MA 02110.

Can I cancel SimpliSafe online?

Only in some states. Online cancellation is available only for residents of some cities and states, and SimpliSafe doesn't name them. Online cancellation is offered only where required for residents of specific cities and states (not named). Tennessee notice in the Terms points to Section 2 and the Terms of Sale for refunds and termination fees. No other state-specific cancellation rules published. Otherwise, cancel by phone, by mail or by live chat.

How much notice does SimpliSafe need?

Notice period: None. Notice is effective upon SimpliSafe's receipt and confirmation; cancelling before the billing date avoids the next month's charge.

Is there a fee to cancel SimpliSafe?

Refunds: Month-to-month, no termination fees. Unearned charges are refunded for any full calendar month after termination; no refund for a partial month. Unused prepaid months are refunded to the payment method on file or directly. Promotions tied to prepaid service may be contingent on keeping the subscription through the prepaid period (SimpliSafe may let you keep them).

Can CertiCancel cancel SimpliSafe for me?

Yes. We write the letter, you sign it on your phone, and we mail it USPS Certified with tracking. It costs $29, paid when you order.

Official links from SimpliSafe

Last verified: November 6, 2026

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