As part of a broader effort to modernize its tax structure, Washington State has enacted changes that significantly impact how digital services are taxed. Beginning October 1, 2025, a variety of technology-related services, previously exempt or treated differently, will become subject to retail sales tax and reclassified for Business & Occupation (B&O) tax purposes. These updates, implemented through ESSB 5814, aim to align tax treatment with the evolving digital economy and will have implications for both compliance and cost planning, particularly for businesses operating in the IT, software, web development, and digital advertising sectors.
This article outlines the key changes and what businesses offering digital services need to know to prepare for the upcoming shift.
Overview of Key Tax Updates
1) Expanded Retail Sales Tax
Beginning October 1, 2025, Washington State will broaden its retail sales tax base to include a variety of digital and tech-related services under ESSB 5814, including:
- Information technology services (e.g., training, technical support, data processing)
- Custom website development
- Custom software sales and customization of prewritten software
- Advertising services
- Some digital automated services previously excluded
2) B&O Tax Classification Changes for Digital Providers
For businesses offering the above digital services, gross income from these activities will now fall under the Retailing B&O classification, in addition to retail sales tax obligations.
B&O Rate Adjustments Under “Service & Other Activities”
While digital services fall under Retailing B&O, businesses also active in “Service and Other Activities” may face new rate tiers:
- Less than $1M prior-year gross income: 1.5%
- $1M–$4.999M: 1.75%
- $5M or more: 2.1%
Implications for Digital Service Providers
- New Tax Obligations: Businesses offering IT, web development, custom software, or advertising services must collect and remit retail sales tax and report this income under Retailing B&O, even if previously exempt.
- Classification Clarity Needed: Depending on their service mix, businesses may need to allocate income between Retailing and Service & Other Activities, potentially facing higher rates if grossing above certain thresholds.
- Rate Impact: Digital providers with higher revenue could face Retailing B&O, combined with a 2.1% Service rate, while financial institutions see additional surcharge burdens.
Suggested Action Steps
- Review pricing and invoicing systems to ensure applicable services correctly reflect new sales and B&O classifications.
- Determine classification boundaries: Differentiate digital services under Retailing versus traditional services.
- Model the impact: Forecast tax liability across service lines to understand total exposure.
- Stay informed via DOR for Interim Guidance Statements and Special Notices to be published ahead of October 1, 2025.
Summary Table
|
Change |
What’s Impacted |
Effective Date |
|---|---|---|
|
Retail sales tax expansion |
IT, web, software, ads, etc. |
October 1, 2025 |
|
Retailing B&O classification applies. |
Revenue from taxed services |
October 1, 2025 |
|
Service & Other Activities B&O rate tiers |
Service income classification |
October 1, 2025 |
|
Financial institution surcharge increase |
Specified financial institutions |
October 1, 2025 |
How We Can Help
At Thompson Tax, we understand that navigating the evolving landscape of Washington’s B&O and sales tax laws, especially those affecting digital services, can be complex and time-consuming. As Your Trusted Tax Advisors, our mission is to simplify that process and help you stay confidently compliant.
Here’s how we can assist your business with the upcoming October 1st changes:
- Clear Taxability Guidance
We help you determine exactly which of your digital services are now subject to retail sales tax and how they should be classified for B&O purposes. Whether you’re selling custom software, offering IT services, or running a digital advertising agency, we’ll provide clear and accurate taxability guidance so you can apply the rules correctly from day one.
- Nexus & Exposure Review
Many digital businesses don’t realize they’ve triggered economic nexus in Washington until it’s too late. We assess your operations and revenue sources to determine where and when compliance obligations began and help address any prior-period exposure with minimal risk.
- Sales & B&O Tax Compliance Setup
From registering with the Department of Revenue to classification mapping, we make sure you’re collecting, reporting, and remitting the correct taxes and that your income is properly reported across Retailing and Service & Other B&O related activities.
- Customized Structuring Advice
With the new taxability rules, how you structure your offerings and contracts matters more than ever. We work closely with your team to evaluate bundling practices, subscription models, and service agreements, ensuring they’re tax-efficient and compliant.
- Audit Defense & Documentation
Increased complexity often leads to increased scrutiny. If Washington’s Department of Revenue comes knocking, we’re here to help. We provide comprehensive audit support, manage communications with tax authorities, and help organize supporting documentation so you’re always prepared.
- Ongoing Legislative Monitoring
The upcoming changes are significant, but not the end of the story. Our team continuously monitors legislative updates, DOR guidance, and administrative rules to keep you informed and ahead of the curve.
Let’s Talk
At Thompson Tax, we don’t just offer sales and use tax services; we become an extension of your team, focused on minimizing risk, identifying savings opportunities, and building a proactive compliance strategy tailored to your business.
Whether you’re a tech startup, SaaS provider, digital agency, or enterprise business, we’re ready to help you navigate these upcoming changes with clarity and confidence.
Reach out to schedule a consultation or learn more about how we can support your compliance with Washington’s 2025 tax reforms.