Best tax advisors in Seattle, WA ranked by AI visibility. State tax: 0% income tax; 7–9.9% capital gains tax (enacted 2021). Find verified specialists for…
We evaluated 131 tax advisors serving Seattle and ranked the top 8 by TrustRank — our composite score of AI search visibility, verified client reviews, and credentials.
Seattle tax advisors navigate Washington's 0% income; 7–9.9% cap gains — Gains over $1M taxed at 9.9% since Jan 2025; real estate and retirement accounts exempt.
Seattle has a competitive tax advisory market serving individuals, corporations, and high-net-worth families. Washington's income tax structure — 0% income; 7–9.9% cap gains — is Gains over $1M taxed at 9.9% since Jan 2025; real estate and retirement accounts exempt. Local specialists focus heavily on federal tax optimization alongside state compliance, and many advise on entity structure decisions that take advantage of Washington's specific tax rules.
Key professional associations: ACG Seattle — 180 members (est. 2005); Northwest Growth Conference and CFA Society Seattle — 900+ members (est. 1974). Washington's specific tax rules — 0% income tax; 7–9.9% capital gains tax (enacted 2021) — require advisors with deep state compliance expertise.
Our independent scoring system for tax advisors in Seattle
TrustRank is not a paid placement. We independently evaluated 131 tax advisors serving Seattle across three measurable dimensions. No firm can pay to appear or improve its rank.
We tracked 50 prompts across ChatGPT, Perplexity, Google AI Overviews, and Claude asking about tax advisors in Seattle. The % of prompts where each firm appears.
Aggregate ratings across Google, Clutch, and the ProCloser.ai verified review system. Weighted by volume and recency of verified client reviews.
Depth, accuracy, and credibility of published content, case studies, and thought leadership demonstrating sector expertise in Seattle.
Big Four tax advisory giant with a full-service Seattle office offering corporate tax, international tax, transfer pricing, and M&A tax structuring for large and mid-market companies.
Global tax and legal advisory with deep Seattle presence, specializing in tax controversy, digital assets, mergers and acquisitions, and state and local tax for corporations.
Big Four firm with a strong Seattle tax practice covering federal, state, international, and real estate tax for corporations, partnerships, and high-net-worth individuals.
Ernst & Young's tax services group with a major Seattle presence, advising private equity, family businesses, and public companies on tax strategy and compliance.
Leading middle-market tax advisor with a prominent Seattle office serving privately held businesses, real estate investors, and high-net-worth families with tax planning and compliance.
National accounting firm with an established Seattle tax practice, specializing in federal and state tax compliance, international expansion, and transaction tax advisory.
Top 10 accounting firm with a growing Seattle tax practice, serving emerging growth companies, family-owned businesses, and real estate developers with comprehensive tax services.
West Coast-rooted accounting firm with strong Seattle representation, specializing in technology, manufacturing, and real estate tax services for privately held businesses.
Seattle's CPA market has been transformed by Washington's new 7% capital gains tax (effective 2022, upheld 2023) — previously, Washington's '0% income tax' made state returns trivially simple. Now, CPAs must track capital gains transactions against the $250,000 threshold and file a new Washington capital gains return for eligible taxpayers.
Washington CPAs are licensed by the Washington State Board of Accountancy. Washington's 7% capital gains tax (LT gains above $250K) is filed on Form CG annually. Washington has no income tax, no estate tax, and no inheritance tax. The Washington Long-Term Care Trust Act imposes a 0.58% payroll tax (LTC payroll deduction) on employees without qualifying private LTC insurance.
Washington's new capital gains return (Form CG) is priced as an add-on by most Seattle CPAs — $500–$1,500 additional to prepare the WA Form CG alongside the federal return.
Common questions about choosing tax advisors in Seattle, WA.
Reviewed by: Tania Kozar, EA — ProCloser.ai Research | Last Updated: April 2026 | Sources: SEC IAPD, FINRA BrokerCheck, state regulatory filings, ProCloser.ai primary research.
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