T-Mobile Raising Late Fee Minimum to $10 Next Month

Lower-balance accounts would bear the biggest increase, with autopay promoted as a way to avoid the charge.

Overview

T-Mobile has begun notifying customers that late payments will cost $10 or 5% of the unpaid balance, whichever is higher, starting in November 2025.
The previous policy was $7 or 5%, meaning the flat minimum rises by $3 for many subscribers with smaller bills.
Customer bills will label the charge as “Late Fee for invoice,” according to the notices described in reports.
Accounts with balances under $200 would incur the $10 minimum, while larger balances continue at the 5% rate.
Automatic payments from a bank account or debit card can prevent late fees and earn a $5-per-line discount, though credit card autopay does not qualify.