The Story
Every carrier statement, dumped into one line on Schedule C
One agent in the batch had been writing policies eleven years. Her new-business commissions, renewal commissions, and carrier bonuses all arrived across five carrier statements and her preparer plugged the total into Schedule C. Nobody separated timing or type. She had no idea what her book was really paying her, and her quarterly estimate was built on last year's bracket, not this year's deposits.
One agent's year, as her preparer coded it (illustrative)

