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Joint Account for Common Earnings
Do not use a shared bank account.  One of you can cash/deposit the check in your personal account and then either pay the others in the group cash or write them a check.  You open yourself up to many, many problems sharing a bank account and/or money.  Treat it like a business as far as income goes, but I would not recommend any type of formal business, LLC, partnership, sole proprietorship, etc. For federal taxes, you just keep track of how much "you" personally are paid and report that at the end of the year as income, most likely on a 1040EZ 1040SE, along with any other income you have.