// Washington State Tax
We don't just know the tax codes, we understand your business.
Inside the Tax Assistant, you can choose between Delphi and Hercules. Compare assistants.
// Our Focus
Specializing in Washington State tax
Our size and structure enable us to easily scale to meet the needs of local companies, fast growing startups, and even large international enterprises. We provide deep expertise in a narrow field, act as your comprehensive in-house tax team, or anything in between.
// Services
Our Services
// AI Assistants
Meet Your Tax Research Team
Two specialized assistants trained on Washington State tax law, each with a different focus area.
Delphi
Research guide
Triangulates DOR pages, statutes, and edge-case guidance without feeling robotic.
Try DelphiHercules
Attribution specialist
Built for receipts attribution, benefit-of-the-service, Rule 19402, and apportionment fights.
Try Hercules
// Next Steps
Ready to discuss your tax situation?
Let our team review your specific needs and find the right approach.
Get in Touch// Get Involved
Help Us Improve
Washington Tax Desk is a community resource. Your feedback shapes what we build next.
Become a Test User
We're inviting a small group of tax professionals, business owners, and colleagues to preview new features and share candid feedback. Your input directly influences what we prioritize.
Support This Project
Washington Tax Desk is a free resource for taxpayers and professionals. Your contributions help cover hosting, AI costs, and ongoing development.
- Keep the AI assistants running and improving
- Maintain the knowledge base with current law
- Build new tools like the apportionment calculator
Every contribution makes a difference.
// Stay Informed
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