IRS Revises Draft Form W-9 Again: What the June 2026 Changes Actually Mean
On May 4, 2026, the IRS released a revised draft of Form W-9, Request for Taxpayer Identification Number and Certification. While the update may appear modest at first glance, one of the most significant developments is the IRS’s reversal of an earlier proposal involving sole proprietor taxpayer identification numbers (TINs).
Earlier draft versions released in January 2026 proposed requiring sole proprietors to provide only a Social Security Number (SSN) or Individual Taxpayer Identification Number (ITIN) on Form W-9. The proposal would have effectively eliminated the longstanding ability for sole proprietors to provide an Employer Identification Number (EIN).
The June 2026 draft reverses course and once again permits sole proprietors to provide either an SSN/ITIN or EIN.
Why the IRS Reversal Matters
From an operational standpoint, the earlier proposal would have created friction for businesses, vendors, and Accounts Payable departments.
Many sole proprietors intentionally obtain EINs to avoid distributing personal SSNs to customers, vendors, and third parties. Had the IRS finalized the January proposal, organizations likely would have faced:
Significant vendor pushback related to privacy concerns
Large-scale remediation efforts to recollect Forms W-9
Increased onboarding friction
Potential increases in backup withholding and B-Notice activity during transition periods
ERP and vendor master file modifications tied to TIN validation rules
The IRS’s decision to allow continued EIN usage for sole proprietors likely avoids considerable operational disruption across the information reporting ecosystem.
The More Important Issue: Disregarded Entity Reporting
While much of the discussion surrounding the draft Form W-9 has focused on sole proprietor EINs, the more significant operational issue remains the treatment of single-member LLCs classified as disregarded entities.
Importantly, the June 2026 draft does not change the long-standing IRS rules applicable to disregarded entities.
A single-member LLC treated as a disregarded entity should provide the owner’s TIN, not the disregarded entity’s EIN, for Form W-9 and information reporting purposes.
This distinction continues to create widespread confusion during vendor onboarding and reporting processes.
In practice, many organizations encounter situations where:
The vendor provides the LLC EIN instead of the owner’s TIN
The W-9 contains the LLC legal name inappropriately on Line 1
Accounts Payable systems capture a DBA or trade name instead of the owner name
The name/TIN combination used for Form 1099 reporting does not align with IRS records
These issues frequently contribute to CP2100 notices, backup withholding exposure, and downstream reporting remediation efforts.
Name/TIN Matching Concerns Are Not Going Away
The IRS reversal on sole proprietor EIN usage does not necessarily eliminate the broader Name/TIN matching concerns that appear to have driven the original proposal.
The underlying issue is often not whether an EIN is permitted, but whether the correct legal name and TIN combination is being reported consistently across onboarding systems, vendor records, and information returns.
As the IRS continues modernizing its compliance infrastructure through initiatives such as:
IRIS electronic filing
Expanded TIN matching initiatives
Increased digital validation processes
Digital asset reporting requirements
organizations should expect continued scrutiny around taxpayer identification accuracy.
What Organizations Should Be Reviewing Now
The revised draft Form W-9 serves as a reminder that vendor onboarding remains one of the most important controls within the information reporting process.
Organizations should consider reviewing:
Vendor onboarding questionnaires
W-9 collection procedures
Single-member LLC validation processes
Name/TIN matching controls
ERP vendor master file logic
Backup withholding procedures
Existing vendor master file data quality
The businesses that manage reporting season most effectively are typically the ones identifying these issues long before Forms 1099 are generated.
Final Thoughts
The June 2026 draft Form W-9 is important not simply because the IRS reversed course on sole proprietor EIN usage, but because it highlights the continuing operational challenges surrounding taxpayer identification reporting.
For many organizations, the real exposure is not the form itself — it is the downstream impact inaccurate onboarding data can create across Forms 1099 reporting, backup withholding compliance, and IRS penalty management.
As IRS validation systems continue evolving, organizations that proactively address vendor onboarding and Name/TIN matching issues now will likely be in a significantly better position during future reporting cycles.
