My boyfriend got a letter saying notice to intent toll probation sentence what does that mean
What is the name of your state? What is the name of your boyfriend's state?
Tolling a probation sentence means that time currently is not being credited as time served. In other words, time is being added to the probationary term - probably while new charges or a probation revocation is being considered against your boyfriend.
If your boyfriend doesn't have an attorney, he should get one.