Here's all the info you need to cancel your service, end it early, or return your equipment.
You may cancel your AT&T Internet service for any reason within 14 days of activation without paying an Early Termination Fee (ETF). You're responsible for all fees and charges incurred through cancellation and must return any leased equipment. If you cancel after 14 days and are subject to a term commitment, you must pay service fees and other charges incurred, including an ETF.
To cancel service:
Early termination policy
You’ll be charged an Early Termination Fee (ETF) if you disconnect your AT&T Internet service more than 14 days after activation and you have a term commitment. The ETF is prorated and reduced for each month that your Internet service is active. The applicable ETF will appear on your bill as Early Termination Fee within 3 bill periods.
ETF example (amounts are estimates):