Call Comcast to request cancellation, and have your account number ready

The only way to cancel Comcast internet is to call them directly. You cannot cancel online, through chat, or by mail. Call Comcast's customer service at 1-800-934-6489 and tell them you want to disconnect your service. Have your account number available — you'll find it on your bill or in the Comcast app.

When you call, a representative will try to retain you by offering discounts or promotions. This is standard practice. If you've already decided to leave, it's faster to say so upfront rather than listen to offers. The representative will ask why you're leaving and may transfer you to a retention specialist. You can decline and proceed with cancellation.

The representative will confirm your service address, tell you the cancellation date (usually within 7 to 10 days), and explain what happens to your equipment. Write down the cancellation date and any confirmation number they provide.

Key Takeaways

  • Call 1-800-934-6489 with your account number to start the cancellation process — this is the only method Comcast accepts.
  • Comcast will attempt to retain you with discounts or promotions; you can decline and proceed directly to cancellation.
  • Your service will end within 7 to 10 days of your call, and you must return all equipment (modem, router, cable box if applicable) to avoid equipment fees.
  • Return equipment to a Comcast service center or arrange a pickup; keep proof of return in case Comcast later charges you for unreturned gear.
  • Your final bill will arrive within 30 days and may include prorated charges for partial-month service or equipment fees if gear is not returned.

What happens to your equipment after cancellation

Comcast owns the modem and router they provided to you. You must return this equipment or you will be charged a non-return fee, typically $100 to $150 per device. The representative will tell you the exact fee during your cancellation call.

You have two options for returning equipment. You can drop it off at a Comcast service center — find the nearest one at comcast.com/locations or by calling the number above. Or you can request a prepaid shipping label or a pickup appointment. If you choose pickup, Comcast will schedule a date within your cancellation window.

Keep your receipt or tracking number as proof of return. Comcast's system sometimes takes weeks to register that equipment was returned, and you may see a charge on your final bill even though you returned everything. Having proof lets you dispute the charge if it appears.

Understanding your final bill and any remaining charges

Your final bill will arrive within 30 days of your cancellation date. It will include charges for service through your cancellation date, prorated if you cancel mid-month. For example, if you cancel on the 15th of a month and your bill cycle runs the 1st to the 30th, you'll pay for 15 days of service.

The final bill may also include equipment fees if you did not return your modem or router, late fees if you had unpaid balances, or taxes and surcharges. Review the bill carefully. If you returned equipment and still see a non-return charge, contact Comcast with your proof of return and ask them to remove it.

If you have an outstanding balance, Comcast may send it to collections if you don't pay. Paying the final bill within 30 days avoids this. If you dispute a charge, contact Comcast's billing department at 1-800-934-6489 before the bill becomes past due.

Cancelling before your contract ends

If you signed a service contract with Comcast, cancelling early may trigger an early termination fee. This fee is typically $10 per month remaining on your contract, though the exact amount depends on your agreement. For example, if you have 8 months left on a 12-month contract, the fee would be around $80.

The representative will tell you the termination fee amount before you confirm cancellation. You can ask if they will waive it as part of a retention offer, though this is not may provide. If the fee is substantial and you're flexible on timing, you might wait until your contract ends to avoid it.

Check your original service agreement or your Comcast account online to see when your contract expires. If you're unsure, ask the representative during your cancellation call — they can tell you the exact end date.

What to do if you're moving and want to keep Comcast

If you're cancelling because you're moving, ask the representative whether Comcast serves your new address before you disconnect. If it does, you can transfer your service instead of cancelling. This avoids early termination fees and equipment return requirements.

To transfer service, provide your new address during the call. Comcast will check availability and schedule installation at your new location. You'll keep the same account and billing, though your bill may change based on your new service tier or promotions available in that area.

If Comcast doesn't serve your new address, you'll need to cancel. In this case, ask whether they will waive the early termination fee because you're moving out of their service area. Some representatives will do this; others will not. It's worth asking.

Switching to a different internet provider

Before you cancel Comcast, research what other providers serve your address. Use BroadbandNow.com or your state's broadband map to see what's available. Knowing your options helps you decide whether to cancel immediately or wait for a better deal from Comcast.

If you've found a new provider, you don't need to wait for Comcast to disconnect before signing up with them. Most providers can install service within 7 to 14 days. You can schedule your new installation for the same day as your Comcast cancellation, or a few days after, to avoid being without internet.

When you switch, you'll need to return Comcast equipment and set up new equipment from your new provider. If your new provider also supplies a modem and router, you won't need to buy your own. Ask about this during your sign-up call.

Frequently Asked Questions

Can I cancel Comcast online or through the app?

No. Comcast requires you to call 1-800-934-6489 to cancel. You cannot cancel through their website, mobile app, or chat. This policy is intentional — the company wants to speak with you directly to try to retain your business.

What if I don't return my modem?

Comcast will charge you a non-return fee, usually $100 to $150 per device. This charge will appear on your final bill. If you return the equipment later, contact Comcast with your proof of return and ask them to remove the fee from your account.

Do I have to pay an early termination fee?

Only if you signed a service contract and are cancelling before it ends. The fee is typically $10 per month remaining on your contract. Ask the representative for the exact amount and whether they will waive it. If you're moving out of Comcast's service area, some representatives will remove the fee.

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

Service usually ends within 7 to 10 days of your cancellation call. The representative will give you a specific date. Your internet will stop working on that date. If it doesn't, call Comcast to confirm the disconnection was processed.

What if I want to cancel but keep my phone or TV service?

You can cancel internet while keeping other services. Tell the representative you want to disconnect only internet. Your bill will change to reflect the remaining services, and you'll keep the same account number and billing date.