Canceling Comcast requires calling their retention department, not using the website or app — they do not offer online cancellation

Comcast does not let you cancel through their website, mobile app, or online account portal. You must call 1-800-934-6489 to speak to a representative. The process typically takes 15 to 30 minutes, and you will need your account number (found on your bill or in the Xfinity app) before you call.

The representative will try to retain you by offering discounts or service changes. You can accept a counteroffer if it works for you, but you are not obligated to. If you want to cancel, say so clearly. Ask for written confirmation of your cancellation date and any final charges, either emailed or mailed to you.

Cancellation takes effect on the date you specify, usually within a few days. You will owe charges through that date. Equipment (modem, router, cable box) must be returned to a Comcast service center or through a prepaid shipping label they provide — failure to return it can result in equipment fees of $100 to $200 per item.

Key Takeaways

  • Call 1-800-934-6489 to cancel; online cancellation is not available through Comcast.
  • Have your account number ready before calling, which appears on your bill or in the Xfinity app.
  • Return all equipment (modem, router, cable box) to avoid charges of $100 to $200 per unreturned item.
  • Request written confirmation of your cancellation date and final bill amount before ending the call.
  • You will owe charges through your cancellation date, and the process typically completes within a few days.

What to expect when you call the retention department

When you reach Comcast, you will likely speak to a retention specialist whose job is to keep you as a customer. They may offer you a lower rate, a service upgrade, or a combination of both. These offers are often real — Comcast frequently discounts service for customers who threaten to leave — but they are negotiable only if you are willing to stay.

If you have decided to cancel, do not engage with the offers unless you genuinely want to reconsider. Saying "I'm interested but let me think about it" will extend the call and may result in follow-up calls. Be direct: "I want to cancel my service" or "I've decided to switch providers" works better than explaining your reasons, which the representative may try to solve.

Some representatives will transfer you to a cancellation team after you confirm you want to leave. Others will handle the cancellation themselves. Either way, the outcome is the same — your service will be scheduled to end on a date you choose.

Returning equipment and avoiding surprise charges

Comcast equipment includes the modem (the device that connects to your wall outlet and receives the internet signal), the router (which broadcasts Wi-Fi), and any cable boxes if you have TV service. All of this belongs to Comcast and must be returned.

When you cancel, ask the representative how to return equipment. You have two options: drop it off at a Comcast service center (called an Xfinity Store), or request a prepaid shipping label to mail it back. Service centers are usually faster — you can walk in and hand over the equipment the same day. If you mail it, keep the tracking number and take a photo of the package before you seal it, in case Comcast claims they never received it.

If you do not return equipment within 30 days of cancellation, Comcast will charge you a non-return fee. These fees are typically $100 to $200 per item. Check your final bill carefully — if you are charged for equipment you returned, contact Comcast with your tracking number or receipt from the service center.

Timing your cancellation to avoid overlapping charges

You will be charged through the last day of service you specify. If your billing cycle ends on the 15th and you cancel effective the 10th, you will owe a prorated amount for those five days. If you cancel effective the 20th, you will owe for the full month.

To minimize charges, cancel on or just after your billing cycle date. If your bill renews on the 1st of each month, canceling on the 1st or 2nd means you will owe only a few days of service. You can ask the representative what your next billing date is before you choose your cancellation date.

Some customers ask to cancel at the end of their current billing cycle to avoid prorated charges. Comcast will usually honor this if you call before the cycle ends. If you are in a contract (less common now, but possible if you bundled services), early cancellation may include an early termination fee of $100 to $200, depending on how much time remains on the contract.

What happens to your phone number if you have Comcast phone service

If you have Comcast phone service bundled with internet or TV, canceling your Comcast account will disconnect that phone number. Before you cancel, decide whether you want to keep the number.

You can port your number to another provider (move it to a new phone company) before or after you cancel Comcast. If you port it before cancellation, tell the representative that the number is being transferred — this prevents Comcast from disconnecting it immediately. If you port it after cancellation, you have a limited window (usually 30 days) to do so before Comcast releases the number.

To port your number, contact your new phone provider and ask them to initiate the port. They will need your account number and PIN from Comcast. If you do not have a PIN, call Comcast before you cancel and ask them to set one up, or provide it during your cancellation call.

Handling your final bill and disputed charges

After cancellation, Comcast will mail you a final bill within one to two billing cycles. This bill includes charges through your cancellation date, any equipment non-return fees, and any early termination fees if applicable. It should also reflect any credits or refunds you are owed.

Review the final bill carefully. Common errors include charges for equipment you returned, charges for service after your cancellation date, or missing credits for promotional rates. If you see an error, call Comcast at 1-800-934-6489 and reference the charge. Have your cancellation confirmation number and any receipts or tracking numbers ready.

If Comcast will not remove an incorrect charge, you can dispute it with your credit card company or bank. Provide them with your cancellation confirmation and the final bill as evidence. Most credit card companies will reverse charges if you can show you canceled the service.

Switching to a different internet provider

Before you cancel Comcast, confirm that your new provider's service is available at your address and that you have a start date scheduled. Internet service from a new provider usually takes three to seven business days to activate after you order it.

If possible, schedule your new service to start before your Comcast cancellation date. This creates a one- or two-day overlap where you have both services, but it prevents a gap where you have no internet. If your new provider cannot start before your Comcast date, ask Comcast if they can delay your cancellation by a few days.

Some providers offer a credit or discount if you switch from Comcast. Ask your new provider whether they have a switch promotion before you finalize your Comcast cancellation — you may be able to offset some of your final charges.

Frequently Asked Questions

Can I cancel Comcast online or through the app?

No. Comcast does not offer online or app-based cancellation. You must call 1-800-934-6489 to speak to a representative. This policy is intentional — it gives the retention department a chance to offer you discounts before you leave.

What if I am in a contract?

Comcast contracts are less common now, but if you have one, early cancellation typically includes an early termination fee of $100 to $200 depending on how much time remains. Ask the representative whether you are under contract before you cancel. If you are, ask whether they will waive the fee — some representatives will if you have been a customer for several years.

How long does it take for my service to actually disconnect?

Comcast will disconnect your service on the date you specify, usually within three to five business days of your cancellation call. Your modem will stop working on that date. If you need internet access after that, make sure your new provider's service is active first.

What if Comcast charges me after my cancellation date?

Contact Comcast immediately with your cancellation confirmation number. If they will not remove the charge, dispute it with your credit card company or bank. Provide them with your cancellation confirmation and final bill as proof that you canceled on a specific date.

Do I need to return the cables and connectors, or just the modem and router?

Return the modem, router, and any cable boxes. You do not need to return cables or connectors. When you drop off or mail equipment, ask the representative or the service center staff to confirm what items they received so there is no dispute later about what you returned.