A provision buried in SB6231 will cost data center operators and their tenants thousands in new sales taxes starting next summer—and most don't know it's coming.
Most professional services owners and data center operators in Washington have no idea that a tax exemption they've relied on is about to disappear. On July 1, 2026, replacement server equipment will no longer qualify for a sales and use tax exemption—a change that could significantly affect capital budgets for companies that regularly upgrade their infrastructure.
Washington State has long offered sales tax exemptions on server equipment purchases for data centers operating in rural counties and large counties. The exemption covered both new installations and replacement equipment—that second part is critical.
Senate Bill 6231, signed into law, removes the words "and replacement server equipment" from the statutory definitions in both RCW 82.08.986 (rural county data centers) and RCW 82.08.9861 (large-county data centers). The specific amendment appears in Section 2, page 11 of the bill, modifying subsection (8)(h)(iii) of RCW 82.08.986.
The practical effect: starting July 1, 2026, any data center operator or tenant purchasing replacement servers will pay Washington's standard sales tax on that equipment. Only brand-new data center construction or initial equipment installations will retain the exemption.
For a business replacing aging servers or upgrading capacity, this means the cost of equipment purchases will increase by the applicable sales tax rate—typically 8.5 to 10.25 percent depending on county and local taxes.
The change applies to:
Data center operators in both rural and large Washington counties who purchase replacement servers for their own facilities.
Data center tenants—companies that lease space in Washington data centers and buy their own server equipment for deployment there.
Professional services firms that operate their own data centers or co-locate equipment in qualifying facilities.
If your business has been factoring the tax exemption into equipment replacement cycles, budget planning needs to change.
The bill itself becomes effective June 11, 2026. However, Sections 2 and 3—the provisions eliminating the replacement equipment exemption—take effect July 1, 2026. That's your deadline: any replacement server purchases made before July 1 will still qualify for the exemption. Purchases on or after July 1 will not.
This creates a narrow window for businesses to accelerate equipment replacement if they want to avoid the new tax burden, though such decisions should account for operational needs and cash flow, not just tax timing.
If your organization operates or uses data center infrastructure in Washington, review your equipment replacement schedules and capital plans. Calculate the tax impact of your typical annual server purchases. Consider whether accelerating any planned upgrades before July 1, 2026 makes financial sense for your business.
Consult with your accountant or tax advisor about how this change affects your specific situation, especially if you're a tenant in a data center and responsible for your own equipment purchases.
Source: SB6231, Engrossed version; RCW 82.08.986 and RCW 82.08.9861; Section 2, page 11; effective dates per Section 4, page 23.