Like most cell phone providers, T-Mobile charges an early termination fee if you leave your contract early. Except for month-to-month customers, the early termination fee is:
$200 for customers with more than 180 days remaining in contract
$100 for customers with 91 to 180 days remaining in contract
$50 for customers with 31 to 91 days remaining in contract
Less than $50 if cancellation occurs in the last 30 days of contract