This isn't advice. It's just knowing how it usually works, so you can decide for yourself.
When a venue or a client pays the band, the check usually goes to one person. That person's name and number are on the venue's paperwork. If the venue pays them enough in a year, it sends a Form 1099-NEC in that person's name for the whole amount. For payments made in 2026 and later, that line is generally $2,000 a year from one payer; it used to be $600.
So on paper, the whole gig starts out as the income of the person who collected the check, even if most of it went straight to the band. To show it didn't stay with them, many leaders keep records of what they paid out and send their own 1099s to their players. That takes each player's Form W-9 with their taxpayer number. (A W-9 is for contractors. A W-4 is for employees on a payroll, which most bands aren't.)
Not everybody wants to fill out a W-9. When a player won't, the person who collected the money can end up holding the bag for income they handed out. The rules even call for holding back 24% from someone you have to report who won't give you their number.
That's why we built the hold-back into StageCut. Set a percentage aside from each share, and the person who collected the money has it covered, if it's needed. If everyone in your band handles their own, set it to zero, or mark those players as 1099 so their full share goes to them. Solo, you can use it to set aside your own.
Everyone's different, and how you report is your own business. StageCut just does the math your way, so you're not caught short later. For your own situation, talk to a tax professional.