Colorado Eliminates Sales Tax Vendor Fee

Colorado just made a big change for sellers. Under HB25B-1005, the long-standing “sales tax vendor fee” will be eliminated beginning January 1, 2026.

For years, qualifying vendors could retain a small percentage of collected sales tax each month to offset the administrative cost of collecting and remitting. That relief is going away—and businesses need to plan for higher effective compliance costs.

What Changed

• Old rule: Vendors remitting Colorado state sales tax could retain a vendor fee (a small percentage of tax collected) to cover administrative expenses.
• New rule: Beginning Jan 1, 2026, the vendor fee is eliminated. Vendors must remit 100% of collected state sales tax to the Colorado Department of Revenue.
• The law was approved by the governor on Aug 28, 2025, and takes effect Jan 1, 2026.
• The bill also makes conforming amendments to ensure state funds like the Housing Development Grant Fund aren’t disrupted by the change.

Who’s affected

• Colorado retailers: Businesses with a physical presence in the state lose the ability to retain a portion of collected sales tax.
• Remote sellers: Out-of-state businesses with economic nexus in Colorado (>$100,000 in sales) must also remit 100% of collected state sales tax.
• Marketplace facilitators: Platforms collecting on behalf of third-party sellers can no longer retain a vendor fee either.

Why this matters

• Higher cost of compliance: Businesses lose the vendor fee reimbursement they once relied on to offset collection and remittance costs.
• Budget impact for multi-state sellers: If Colorado is a significant market, expect slightly tighter margins starting in 2026.
• Audit risk unchanged: Sellers are still fully responsible for proper collection and remittance—only the small offset is being removed.
• Planning required: Businesses may need to adjust financial models and compliance budgets before the new year.

If you use TaxCloud: Our system ensures Colorado sales tax is collected and remitted accurately. While the state is removing the vendor fee, TaxCloud automates compliance so you don’t take on added internal costs—helping reduce the sting of losing this credit.

Next steps

• Review how much your business currently retains under Colorado’s vendor fee—factor that revenue out of 2026 budgets.
  Update financial models to account for the change effective Jan 1, 2026.
• For multi-state sellers, expect similar moves in other jurisdictions—vendor fee programs are under increasing scrutiny.
• Use automation to keep compliance costs predictable as margins tighten.