Do I Have an Internet Data Cap? How to See If You Have Unlimited Data

Here’s what to know about your internet plan to avoid any data cap fees.
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Using the internet is a common activity for people throughout the U.S., but what happens if your internet plan or your internet service provider has a data cap? Data overages can add up quickly, and so can the associated fees.

A data cap is a set threshold of the amount of data you can use in one month on your internet service provider’s (ISP's) plan. If you exceed the threshold, your ISP will sometimes begin charging you overage fees. In other cases, they may just throttle, or slow down, your internet speeds.

Internet providers around the nation have data allowances that can limit your ability to browse, stream, and more. Let’s find out which ISPs have data caps, how much overages could cost you, and how much data your household actually needs.

In this article
Which providers have internet data caps?
Which providers have unlimited data?
What’s the AT&T internet data cap?
What’s the Comcast Xfinity internet data cap?
What’s the Cox internet data cap?
What’s the Spectrum internet data cap?
What’s the Starlink internet data cap?
What’s the T-Mobile Home Internet data cap?
What’s the WOW! Internet data cap?
How to find out what your data cap is
How much data do you need?
How to avoid using too much data
Internet data cap FAQs
Bottom line

Which providers have internet data caps?

If you’re unsure if your internet provider has a data cap, it’s a good idea to find out. Your internet needs could vary from month to month, and knowing how a data overage could affect you is beneficial.

Check out these nationwide ISPs who have data caps.

ISPs with data caps

Provider Data cap Overage fee Unlimited data add-on cost
Astound Broadband (formerly RCN, Grande, Wave) 100 GB–1 TB/mo $6.50 per 25 GB $10–$20/mo
AT&T 1 TB/mo $10 per 50 GB up to $100 $30/mo
Buckeye Broadband 250 GB/mo $15 for an additional 250 GB $30/mo
Cox 1.25 TB/mo (can add an additional 500 MB) $10 per 50 GB up to $100 $30/mo
HughesNet Up to 100 GB/mo No fee, speeds slowed N/A
Mediacom Up to 6,000 GB/mo N/A N/A
Sparklight Up to 1.2 TB/mo $10 per 100 GB N/A
Viasat Up to 150 GB/mo $10 per 1 GB N/A
WOW! Internet Up to 3,072 GB/mo $10 per 50 GB up to $50 per mo $30/mo (1G plan only)
Comcast Xfinity 1.2 TB $10 per 50 GB up to $100 $30/mo or through the xFI complete package
Data as of 9/5/2022.

1,000 gigabytes (GB) = 1 terabyte (TB)

Find out more about the difference between megabits and megabytes in our guide.

Which types of internet usually have data caps?

There are many different types of internet providers that have data caps for their customers. Many of those ISPs also offer unlimited data plans to help you avoid any unwanted fees. Of all the different types of internet, satellite internet providers tend to have the smallest data caps.

The repercussions of these data caps also vary based on the provider. For instance, some providers charge customers a fee to add additional data, whereas others may throttle or slow down your internet speeds once you’ve hit a specific data limit.

Which providers have unlimited data?

If you’re worried about hitting a data limit every month, you may want to find an ISP that has an unlimited data plan. Here are a few providers with unlimited data offerings.

ISPs with unlimited data

Provider Data cap
AT&T Fiber (speeds of 100+ Mbps) Unlimited
CenturyLink Unlimited
EarthLink Unlimited
Frontier Unlimited
Google Fiber Unlimited
Optimum Unlimited
Spectrum Unlimited
Starlink Unlimited
Starry Internet Unlimited
T-Mobile Home Internet Unlimited
Verizon Fios Unlimited
Verizon 5G Home Internet Unlimited
Windstream Unlimited
Data as of 9/5/2022.

How to get unlimited data

If you need more data than is included in your ISP’s data plan, contact your provider to see if you can upgrade to an unlimited plan. You could also switch to a different provider with an unlimited plan if one is available in your area.

What’s the AT&T internet data cap?

AT&T’s data caps are based on the type of internet plan you have. Here is a breakdown of the internet plans and how much data is allocated each month.

  • DSL: 150 GB per month
  • Fixed wireless internet: 350 GB per month
  • 100 Mbps or faster: Unlimited data

If you have AT&T high-speed internet, you can also upgrade to unlimited data if your current plan doesn’t include it. The cost of an unlimited upgrade is $30 per month.

What’s the Comcast Xfinity internet data cap?

Xfinity’s internet service comes with a 1.2 TB-data cap. Once you’ve exceeded the 1.2 TB of data, Xfinity charges $10 per 50 GB, not to exceed $100 a month. For first-time offenders, Xfinity won’t charge you for additional data.

If you’ll consistently need more data, such as for online gaming and downloading files, Xfinity offers an unlimited data add-on. Depending on your current Xfinity internet plan, an unlimited data cap could cost you $30 or you’d need to purchase the XFi Complete package for $25 per month.

What’s the Cox internet data cap?

If you’re a Cox internet user, your plan comes with 1.25 TB of data per month. Cox also offers you the option to upgrade by adding an additional 500 GB or unlimited data. The cost of the 500 GB of additional data may vary based on your location. The unlimited data upgrade will cost you $30 per month.

If you do go over your monthly limit, Cox automatically adds additional data for you at the rate of 50 GB for $10. These data overage charges shouldn’t exceed $100.

You can adjust your Cox data limits on a month-to-month basis.

What’s the Spectrum internet data cap?

Spectrum doesn’t have data caps for its internet customers. Spectrum offers a variety of plans with speeds up to 1,000 Mbps (1 Gbps), but none of the plans have a data cap.

Starlink doesn’t have data caps or limits for its customers. However, the company may throttle internet speeds as necessary.

Starlink costs $110 per month for residential service, and you’ll need to pay a $599 equipment fee to get the satellite dish and other equipment.

What’s the T-Mobile Home Internet data cap?

Good news! T-Mobile’s 5G Home Internet service does not have a data cap. The internet service is $50 with autopay enabled.

T-Mobile offers only one plan and all customers have unlimited data with the fastest speeds available.

What’s the WOW! Internet data cap?

WOW! offers a variety of internet plans that all have varying levels of usable data. Certain cities may also see different data caps. Right now, WOW!’s data caps look like this:

  • Internet 50: 1,024 GB
  • Internet 100: 1,536 GB
  • Internet 200: 1,536 GB
  • Internet 300: 1,536 GB
  • Internet 500: 2,560 GB
  • Internet 600: 2,560 GB
  • Internet 1,000: 3,072 GB

WOW! also offers an unlimited data plan option if you subscribe to its Internet 1,000 plan. The unlimited data add-on costs an additional $30 per month.

How to find out what your data cap is

If your internet plan includes a data cap, your ISP should have a way for you to check your overall data usage. Many ISPs also have notifications in place to alert you when you may be reaching your data limit.

To find out if you have a data cap and how much data you’ve used this month, you can head to your ISP’s website or app and sign in to your account. Look for a dashboard or tracker for your data usage to see how much you’ve used that month.

What happens if you go over your data limit?

In most cases, if you go over your data limit, your ISP will charge you a fee to add additional data to your plan. This fee ranges depending on your provider, but many internet providers charge about $10 for an additional 50 GB of data.

Other ISPs will throttle or slow down your speed once you’ve reached a data cap. This can hinder your ability to stream video, jump on Zoom calls, and more.

How much data do you need?

The amount of data you need is dependent on many factors. If you’re a family of five, with both parents working from home and kids constantly streaming TV shows and gaming, you likely need more data than someone who lives alone and commutes to an office five days a week.

According to a Broadband Insights Report by OpenVault, the average data usage of a North American household was more than 512 GB per month. Based on this, an internet plan with at least 600 GB of data should suffice for most American families. If you know your household uses more data than an average household, you should find a plan with more data.

How to avoid using too much data

If you’re concerned about using too much data at home, there are steps you can take to help minimize data usage.

  • Download music instead of streaming it
  • Turn off Wi-Fi and use cellular data if needed
  • Turn off streaming services when not actively using them
  • Use lower-quality video for YouTube, Netflix, and other streaming services
  • Check which devices are connected to your internet and make sure all are necessary

How much data do you need for…

Online activity Data usage per hour
Sending 5 emails 2 MB
Browsing social media (4 hrs) 360 MB
Making a video call (Zoom, Skype, etc.) 2 GB
Using a home security camera (1 hr) 2 GB
Streaming video in SD .75 GB
Streaming video in HD 2.5 GB
Streaming video in 4K 6 GB
Gaming online .1 GB

Internet data cap FAQs


Are internet data caps legal?

Yes, internet data caps are legal. There have been attempts in the U.S. Senate to limit data caps, but no legislation has been passed.


How do I get around internet data caps?

There’s no way around internet data caps with your ISP. If you’re getting close to your data limit, you can usually purchase more data from your provider or sign up for an unlimited data plan. Additionally, you can turn off the internet connection to unnecessary devices such as smart lights, speakers, and more.


Is 1,024 GB a lot of internet data?

Yes, 1,024 GB of data is a lot of data. In many instances, this amount of data will be sufficient. You could spend more than 3,000 hours on a video call with this much data.


Is 200 GB enough for a month?

With 200 GB of data, you can scroll through social media for more than 2,200 hours. However, 200 GB may not be enough if you’re working from home, streaming often, and scrolling social media — or if you share your internet connection with family members or roommates.


Is 500 GB enough for a month?

Yes, 500 GB is likely enough data for a month, but it depends on your day-to-day activities. With 500 GB of data a month, you could send 1,250,000 emails per day. Although it’s probably impossible to send that many emails each day, the 500 GB may go faster if multiple kids are streaming every day after school.

Bottom line

Understanding your internet plan and any fees associated with your data usage is important. As more and more devices are connected to the internet, the average household data usage continues to increase. If you have a data cap in place, you could reach that threshold faster with new online devices.

To manage your data plan, first, understand if your current plan with your ISP has a data cap. If so, head to your ISP’s app or website and find out how to check your current data usage. This is helpful in case you’re worried about going over your limit.

If you’re concerned about your data usage and you don’t have an unlimited plan, you can minimize your data usage by making sure that you are only using the internet for needed activities.

You could also look into upgrading to a faster internet plan, as most ISPs offer more data with faster speeds. Find out what internet speed is best for your needs in our guide.

Author Details
Andrew Strom Adams is a freelance writer focused on online privacy and digital security. He writes on various topics to help individuals protect themselves on the internet. Andrew has worked in legal marketing, technology, and startups. He has more than 12 years of experience in marketing and communications. He holds an M.B.A. from Westminster College and a B.A. in journalism from Oklahoma Baptist University. When he’s not writing, he’s playing with his two kids or watching reality TV.