W-9 Instructions for Companies, LLCs and Partnerships

Instructions on how to complete the W-9 tax form for a Company

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SINGLE-MEMBER LLC

A single-member Limited Liability Company is considered a disregarded entity by the IRS. In this case, the sole member of an LLC must file taxes in the same way that sole proprietors do.

1. Enter your name and the legal name of your limited liability company (LLC) on the first two lines of the W9. On the first line, write the name you file your tax returns under and on the second line, enter the legal name of the LLC
2. Enter business address, city, state and zip code. Use the address that you will use on your tax return.
3. Check the “Individual / sole proprietor / single member LLC” box – not the “limited liability company” box for your tax classification
4. Enter your Social Security number. You must ideally use your SSN.
5. Sign, date, and submit the form

CORPORATION OR PARTNERSHIP

1. Enter the name of the LLC as recorded in the tax documents. If the LLC has a secondary business name, enter it on the second line, “Business Name”
2. Check the “Limited Liability Company” box
3. On the tax classification line, write a “P” for partnership, “S” for S Corporation, or “C” for the corporation
4. Enter the business address, city, state and zip code. Use the address that you will use on your tax return.
5. Enter the employer ID number (EIN) of the LLC
6. Sign, date, and submit the form

Please note: we are not able to give advice on how or when you should file your taxes. We recommend that you contact a tax professional with any questions.