Assuming you are not incorporated (S-Corp or C-Corp), with three members in the LLC, you have a multi-member LLC which files a completely separate 1065 Partnership/Multi-member LLC tax return. Take note the 1065 is due by March 15, not April 15. The late filing penalty is $200 per month, per member. So filing one day late with three members will cost an additional $600 for a late filing penalty. Just be aware of that.
As for the taxable income to the members, understand that you do "NOT" under any circumstances issue any of the members a W-2 or 1099-NEC. No exceptions.
Now what I"m saying here is "SUPER BASIC" and not anywhere near all inclusive. But upon completing the 1065, each member will be issued a 1065 K-1 which each member will need in order to complete their own personal 1040 tax returns. Any/all income reported on the K-1 is what the member will be taxed on. So if no member takes a distribution, you'll still enter the K-1 showing $0 distribution, and their won't be anything to be taxed on.
