To cancel Comcast service, call or chat with Xfinity support and write down your confirmation number. Then return every rented box, modem and remote to an Xfinity Store or an approved shipping drop-off. Keep your receipt until your final bill shows a zero balance.

Cancel Comcast Service: Return Your Cable Box and Modem (2026)

What You Need Before You Cancel

A little prep makes the call shorter. It also protects you from surprise charges later.

  • Your Xfinity account number. It is printed on your bill and shown in your online account.
  • A list of your rented equipment. Look in your online account or on your bill for each device and its serial number. A serial number is the unique ID printed on a sticker on the device.
  • Your new internet plan, already working. Set this up first so your home is never offline.
  • The original boxes or a sturdy box. You will need this if you ship your gear back.
  • A phone or pen. Use it to note the agent's name, the date and your confirmation number.

Step-by-Step: Cancel and Return Your Comcast Equipment

Follow these steps in order. Each step is one task, so you can stop and come back at any time.

  1. Set up your new internet provider and confirm it works on a phone or laptop.
  2. Move your TV or streaming stick to the new Wi-Fi. On most TVs, go to "Settings > Network", pick your new network and enter the password.
  3. Sign in to your Xfinity account online and open the page that lists your devices. Write down every item and its serial number.
  4. Check whether you own your modem. If you bought it yourself, keep it. You only return gear that Comcast rents to you.
  5. Call Xfinity support or start an online chat, and say clearly: "I want to cancel my service."
  6. Ask the agent three things: your confirmation number, your return deadline and your final bill date.
  7. Unplug each cable box, modem and gateway. A gateway is a modem and Wi-Fi router in one device.
  8. Gather the power cords and remotes too, along with any other parts the agent tells you to return.
  9. Pack everything in one box, or carry it in a bag if you are going to a store.
  10. Drop off the items at an Xfinity Store or at the shipping location the agent gives you.
  11. Ask for a printed or emailed receipt that lists every serial number.
  12. Take a photo of the receipt and the packed items. Save both until your account is fully closed.
  13. Check your final bill when it arrives. Make sure no equipment fees appear on it.

Return Options Compared

You can usually return Comcast gear in more than one way. Confirm which options are open in your area when you cancel.

Return method How it works Proof you get Best for
Xfinity Store Bring your gear in person. Staff scan each item. A receipt with serial numbers, given on the spot People who live near a store and want instant proof
Shipping store drop-off Take your gear to an approved shipping location. Staff pack and ship it for you. A drop-off receipt and a tracking number People with no Xfinity Store nearby
Mail-in return kit Ask for a prepaid label or kit, pack the box yourself and send it. A tracking number only People who cannot travel easily

An in-person store visit gives the strongest proof. The staff scan each serial number while you watch.

If a Step Fails

Small problems are common. Here is how to fix the most likely ones.

The agent keeps offering deals

Agents often try to keep you. Say no politely and repeat that you want to cancel today. Ask for the confirmation number before you hang up.

A device is missing from your list

Compare your account list with the gear in your home. If something is lost or broken, tell the agent right away. Ask what charge, if any, will apply.

The receipt is missing serial numbers

Ask the staff to reprint the receipt with every serial number on it. Without serial numbers, it is hard to prove you returned each item.

Your final bill shows an equipment fee

Contact support and share your receipt photo and tracking number. Ask them to remove the charge and send you an updated bill.

What to Watch Instead of Cable

Many homes are dropping cable boxes and moving to apps. News outlets like NPR Technology and Financial Times Tech often cover this change in how people watch TV.

Once your Comcast gear is gone, you only need fast internet and a streaming device. A streaming subscription runs through an app instead of a rented box.

SubTV IP at a glance

SubTV IP (subtvip.store) is a paid premium streaming subscription. You can choose a plan of 1, 3 or 12 months. Your access turns on right after you order.

  • Uptime: 99.9%. Uptime means the share of time the service stays online.
  • Picture: 4K at 60 fps using HEVC. HEVC is a video format that keeps sharp pictures at smaller file sizes.
  • Stability: an anti-freeze server cluster, which is a group of servers that work together to cut down on freezing.
  • Payment: secure checkout with PayPal or a credit card.
  • Help: support through WhatsApp.

Supported devices and player apps

You do not need a new box from your old cable company. SubTV IP works on these devices:

  • Fire TV Stick 4K Max
  • Samsung Smart TV (Tizen)
  • LG webOS TVs
  • Android TV Box
  • Xiaomi Mi Box S
  • Apple TV

It also works with these player apps: TiviMate 5.x, IBO Player Pro, IPTV Smarters Pro, Kodi 21 and Flex IPTV. A player app is the screen you use to browse and play your streams.

Stop your internet provider from slowing streams

Some internet providers slow down video traffic. This is called throttling. Two simple settings can help.

  1. On a Fire TV Stick, open "Settings > Network" and highlight your Wi-Fi network.
  2. Press the menu button on the remote to forget the network, then select it again.
  3. Enter your password and choose "Advanced" before you connect.
  4. Type 1.1.1.1 in the DNS field. This is Cloudflare DNS, a fast public address book for the web.
  5. On an Android TV Box, go to "Settings > Network & Internet", open your Wi-Fi network, set "IP settings" to "Static" and enter 1.1.1.1 as DNS.
  6. In your player app, open the playback or buffer settings and set the buffer to 5,000 ms (5 seconds) if that option is offered.

A buffer is a small store of video that loads ahead of time. It keeps playback smooth when your connection dips for a moment.

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Tips to Avoid Extra Charges

  • Return gear early. Do not wait until the last day before your deadline.
  • Return everything at once. One trip means one receipt and less to track.
  • Keep proof for months. Save your confirmation number, receipt and photos together.
  • Watch your bank account. Turn off auto-pay only after your final bill is settled.