Part 3 Margin Taxes and Washington’s B&O Tax: Who Might Benefit if B&O Is Replaced?

Part 3 Margin Taxes and Washington’s B&O Tax: Who Might Benefit if B&O Is Replaced?

This article is part of a short series comparing a margin tax to Washington’s B&O tax. The main question is simple: if Washington replaced the B&O tax with a margin tax, which businesses would benefit most? Usually, the answer is businesses that generate a lot of revenue but keep a small profit margin after covering their main expenses.


Under the current B&O tax, businesses pay tax on gross receipts rather than on what remains after costs. This means a company can owe taxes even when profit is limited. For businesses with high payroll, inventory, materials, or other major operating costs, that can feel especially burdensome. A margin tax might lessen that burden because it generally taxes a smaller base than total gross receipts.


That could be especially important for retailers, manufacturers, wholesalers, contractors, and certain agricultural businesses. These types of firms often handle large sums of money, but their actual profit margins might be slim. A tax system that considers some costs before calculating the tax could seem more realistic and fairer to these businesses.
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Still, not every business will benefit equally. Some service-based firms might see less improvement depending on how the tax is structured and which costs are allowed. The main point is that replacing B&O is likely to shift the tax burden rather than eliminate it. In the next article, I will explore the other side of that shift: the complexity, design choices, and policy tradeoffs involved in replacing the B&O tax.

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Sources

• Washington State Department of Revenue. “Business & Occupation Tax.”
  Explains Washington’s B&O tax structure, including the fact that it applies to gross receipts rather than net income.
• Washington State Department of Revenue. “Business & Occupation Tax Classifications.”
  Provides the main business classifications used under Washington’s B&O tax system and helps show how tax treatment can vary by activity.
• Washington State Department of Revenue. “Business and Occupation Tax Classification Definitions.”
  Offers additional detail on how Washington defines business activities for B&O tax reporting purposes.
• Texas Comptroller of Public Accounts. “Franchise Tax.”
  Provides the main overview page for Texas franchise tax, which is often used as a practical example of a margin-based business tax.
• Texas Comptroller of Public Accounts. “Franchise Tax Overview.”
  Explains how Texas taxable margin is calculated and outlines the main reporting framework for the tax.
• Texas Comptroller of Public Accounts. “Texas Franchise Tax Report Forms for 2026.”
  Includes current threshold information and filing details that help illustrate how smaller firms may be treated under the Texas system. 

This article was written with contributions from AI to organize the information and improve its readability.