No, but if the throttling gets too bad for you, you can purchase additional GB. Usually using just the web, I don't notice the throttling that bad but I am not a heavy video user. You will noticed the throttling the most when downloading movies, programs etc, things that are already compressed. The text on web pages, not so much.
Hello Leonard, all the members are correct, we don’t charge overages but your speeds will be throttled once you have exceeded your data limitations for your month of data. You do have the option to purchase more GB’s as needed until your new data is available for use.