How to fill out W-9 for LLC appears confusing to many owners. This guide gives clear steps. It shows which boxes to check and which number to enter. It explains when to use an EIN or an SSN. It explains backup withholding and certification. It uses plain language and tight steps. The reader can finish a W-9 with confidence after reading.
Key Takeaways
- To fill out a W-9 correctly for an LLC, identify and check the appropriate tax classification box (sole proprietorship, partnership, S corporation, or C corporation).
- Use the LLC’s legal name on line 1, include a DBA if applicable, and ensure the name matches IRS records to avoid mismatches.
- Provide the correct Taxpayer Identification Number (TIN): use an EIN for multi-member LLCs or those with employees, or an SSN for single-member LLCs with no EIN.
- Always certify the backup withholding and FATCA status accurately to avoid penalties, and keep exemption documents for your records.
- Sign and date the W-9 before securely delivering it to the requester, not the IRS, and maintain copies securely for future reference.
Determine Your LLC’s Tax Classification And Backup Withholding Status
The owner identifies the LLC tax class first. The owner checks whether the LLC is taxed as a sole proprietorship, partnership, S corporation, or C corporation. The owner marks the correct box in the Federal Tax Classification area. The owner confirms whether the IRS has notified the LLC about backup withholding. If the IRS notified the LLC, the owner checks the backup withholding box. The owner gathers documentation if the LLC claims exemption from backup withholding. The owner keeps the notice with tax records for at least four years.
Complete The Identification Section: Name, Business Name, And Federal Tax Classification
The owner writes the LLC legal name on line 1. The owner writes a DBA or trade name on line 2 if it exists. The owner selects the correct Federal Tax Classification box for the LLC. The owner avoids entering both a personal name and a business name on line 1. The owner uses the exact name that matches IRS records. The owner checks the appropriate box for S corp or C corp only if the LLC elected that status. The owner leaves line 2 blank when no DBA exists.
When To Use Your Personal Name Versus The LLC’s Name And How To Enter ‘LLC’ Tax Boxes
The owner uses the personal name when the single-member LLC is a disregarded entity and the owner files taxes on Schedule C under their SSN. The owner uses the LLC name when the LLC reports taxes separately or uses an EIN. The owner checks the box that says “LLC” and writes the tax classification letter (S, C, or P) on the line next to that box. The owner does not check both individual and LLC boxes. The owner matches the name with the TIN used on the form.
Provide The Correct Taxpayer Identification Number (TIN) For Your LLC
The owner enters the correct TIN in Part I. The owner uses an EIN when the LLC has one. The owner uses an SSN only when the LLC is a single-member disregarded entity that does not have an EIN. The owner avoids mixing names and numbers that do not match IRS records. The owner double-checks each digit before signing. The owner understands that an incorrect TIN can trigger backup withholding and reporting delays. The owner keeps a record of the TIN used for each payer.
Using An EIN Versus An SSN And What To Do For Single‑Member Disregarded Entities
The owner uses an EIN when the LLC hires employees, has more than one member, or elects corporate tax status. The owner applies for an EIN online if the LLC lacks one. The owner uses an SSN when a single-member LLC has no EIN and the owner reports income on Schedule C. The owner writes the owner’s SSN in Part I in that case. The owner considers getting an EIN to separate business and personal records and to avoid sharing an SSN.
Certify Exemptions, Backup Withholding, And FATCA Status (If Applicable)
The owner reads Part II before signing. The owner certifies that the TIN is correct. The owner certifies that the LLC is not subject to backup withholding unless the IRS notified otherwise. The owner checks an exemption code only when the LLC qualifies under IRS rules. The owner enters FATCA codes only if the LLC fits the FATCA exceptions. The owner keeps a copy of any exemption documentation. The owner understands false certification can carry penalties.
Sign, Date, And Deliver The W-9 Safely: Best Practices For Recordkeeping And Security
The owner signs and dates the form in Part II after reviewing all entries. The owner sends the form to the requester, not to the IRS. The owner uses secure delivery methods such as encrypted email portals or secure upload links. The owner avoids sending the form by unprotected email when it contains an SSN. The owner keeps a scanned copy in a secure folder and a paper copy in locked records. The owner updates payers when the LLC name, tax classification, or TIN changes.
Tim Kelly, J.D., is a legal writer for LawInfo.com. He holds a law degree from Mitchell Hamline School of Law in St. Paul, Minnesota. Tim has a background in retail copywriting and entertainment journalism, with his work being featured in various publications, including the New York Times and EW.com. In 2017, he transitioned into the legal industry, specializing in intellectual property and small business law. Tim resides in the Twin Cities and takes great joy in being a husband, father, and passionate record collector.