W-9 RESOURCE • 2027 GUIDE
Use this walkthrough beside the official IRS instructions. It helps you review each section, but entity ownership, residency, and certification questions may need individual advice.
Form revision: The IRS download checked November 11, 2026 is revised March 2024. This is 2027 guidance, not an announcement of a new IRS revision. Check the current IRS revision.
1. Download and check the form
Open the official IRS PDF below. The current revision checked on November 11, 2026 is March 2024. Confirm the current version before completing a form for use in 2027.
2. Identify the taxpayer
Follow line 1 for the taxpayer name and line 2 for a different business or disregarded-entity name. Read the special instructions if the account has multiple names or an entity’s owner is the relevant taxpayer.
3. Review classification and exemptions
Use line 3a for the appropriate federal tax classification. Review whether line 3b applies to your entity and relationship with the requester. Enter exemption codes only if the instructions establish that they apply to you.
4. Add correspondence details
Check the mailing address on lines 5 and 6. Line 7 allows optional account numbers. Ask the requester about any account reference it needs, without putting unnecessary sensitive information elsewhere on the form.
5. Complete Part I
Use the correct taxpayer identification number for the person or entity identified. The form includes a chart explaining which name and number to provide in different situations. Consult it when ownership or entity treatment makes the answer unclear.
6. Read Part II
Review every certification and follow its instructions for signing, exceptions, and any required changes. An electronic process must satisfy applicable IRS requirements; confirm the requester’s accepted method.
7. Review and return
Check legibility, accuracy, and saved PDF entries. Send the completed form to the verified requester using the agreed delivery method. Keep a secure copy and record when it was supplied.
Common mistakes to catch
- Using a brand name where a different taxpayer name is required.
- Guessing an LLC’s tax classification.
- Entering a number that does not match the named taxpayer.
- Skipping the certification instructions.
- Sending the completed form to an unverified recipient.
Official IRS W-9 form and instructions
Open the official IRS W-9 PDF →
Sources: IRS Form W-9 overview · Requester instructions.
Continue reading: Saving and checking a fillable PDF · W-9 form downloads and guidance.
Reviewed November 11, 2026. W-9form.tax is an independent educational resource, not the IRS. Guidance is general and does not replace advice about your individual tax circumstances.