W-9 for a Single-Member LLC (2026)
Complete the form below, then generate a printable version.
Your tax details never leave your browser — we don’t upload, we don’t store.- Line 1 — Name: enter the LLC’s name as registered.
- Line 2 — Business name: if you use a DBA, enter it here (otherwise leave blank).
- Line 3 — Classification: check “LLC” and write “S” (disregarded entity) in the space, unless you elected corporate tax treatment.
- Lines 4–6 — Address and TIN: a single-member LLC typically uses its owner’s SSN, or an EIN if it has one.
- Part II — sign and date as the member (or an authorized person).
Important
TaxForge is not affiliated with, endorsed by, or approved by the IRS. This guide and template are for general reference — verify against the official IRS form and consult a tax professional.
Frequently Asked Questions
Does a single-member LLC use an SSN or EIN?
It may use the owner’s SSN (disregarded entity) or an EIN. Many banks and clients ask for an EIN on the W-9.
Why check “LLC” and write “S”?
A single-member LLC is a disregarded entity for federal tax, so the “S” tells the payer how it is taxed.
Do I need a separate W-9 per client?
You can reuse the same completed W-9 for each client that requests one, as long as the details are unchanged.