A single-member LLC (SMLLC) has one owner. A multi-member LLC has two or more. Both protect your personal assets from business liability, but they’re taxed differently and they need different paperwork.
Single-member LLC
For tax purposes, the IRS treats a single-member LLC as a “disregarded entity” by default. That means the LLC itself doesn’t pay tax — profits flow to the owner’s personal return. For non-residents, this is usually the cleanest option.
- One owner
- Simplest paperwork
- Disregarded for federal tax
- Still has to file Form 5472 if owner is foreign
Multi-member LLC
Two or more owners. The IRS treats a multi-member LLC as a partnership by default. The LLC files Form 1065, and each owner gets a K-1 showing their share of profits. More paperwork, more complexity, but the right structure when you actually have partners.
- Two or more owners
- Files Form 1065 (partnership return)
- Each owner gets a Schedule K-1
- Operating agreement gets more important
Which one fits you?
If it’s just you, single-member is the right answer. If you have a co-founder or business partner who genuinely owns part of the business, go multi-member from day one. Don’t try to add a partner later by “just sharing the profits” — that creates legal mess.
