Compare taxes and see how much you save moving from Washington to California
Washington State and California form the technology corridor on the US West Coast — Seattle (Microsoft, Amazon, Boeing) versus San Francisco and Silicon Valley. For business owners and tech workers, the tax comparison is meaningful but more nuanced than it first appears. Washington has no personal income tax and no corporate income tax. This is the headline advantage over California's 13.3% top rate and 8.84% corporate tax. Washington does impose the Business & Occupation (B&O) tax — a gross receipts tax applied to most Washington businesses. B&O rates vary by business activity: 1.5% for most services, 0.484% for manufacturing and extracting, 0.471% for wholesaling, 0.471% for retailing. Unlike an income tax, B&O is calculated on gross revenue regardless of profit — which can be burdensome for high-revenue, low-margin businesses. For a consultant with $200,000 in revenue and $150,000 in profit: B&O tax ≈ $3,000 (1.5%); California income tax on $150K profit ≈ $12,400+ plus $800 entity fee. Washington wins by $10,000+/year. For a retailer with $500,000 gross revenue and $50,000 profit: B&O ≈ $2,355 (0.471%); California income tax on $50K ≈ $2,400 plus fees. Close to equal. Washington also introduced a 7% capital gains tax in 2022 on gains above $262,000 (adjusted annually) — affecting high earners with investment income, but not business operating income. For most service businesses and tech workers, Washington's B&O cost is far below California's income tax burden.
No Income Tax, B&O Gross Revenue Tax
Zero personal and corporate income tax; Business & Occupation (B&O) tax 0.1–1.5% of gross revenue; no minimum entity fees; Washington capital gains tax 7% on gains over $250K (investment, not business)
Highest US Rates + Entity Fees
Personal income tax up to 13.3%; corporate income tax 8.84%; $800/year minimum franchise tax; LLC gross revenue fees; S-corp 1.5% net income tax
At $150,000–$200,000 business profit income:
Washington saves approximately $10,000–$18,000+/year vs California at $150K–$200K business profit for service businesses (after B&O tax of ~1.5% on gross revenue). For high-revenue, low-margin businesses, B&O tax can offset some or all of the income tax saving. Washington's 7% capital gains tax applies to investment gains above $262K — not to normal business operating income.
| Income | WA Tax | CA Tax | Savings | 10-Year |
|---|---|---|---|---|
| $100,000 revenue, $75,000 profit (service) | $1,500 B&O (1.5% gross) | ~$5,200 CA income + $800 fee | WA saves ~$4,500/yr | $45,000 |
| $200,000 revenue, $150,000 profit (service) | $3,000 B&O (1.5% gross) | ~$12,400 CA income + $800 fee + $900 LLC fee | WA saves ~$11,100/yr | $111,000 |
| $300,000 revenue, $200,000 profit (service) | $4,500 B&O (1.5% gross) | ~$17,900 CA income + $800 + $900 fees | WA saves ~$15,100/yr | $151,000 |
| $1M revenue, $100,000 profit (retail) | $4,710 B&O (0.471% gross) | ~$7,500 CA income + $800 + $2,500 LLC fee | WA saves ~$6,090/yr | $60,900 |
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Washington's B&O tax and capital gains rules are complex, and California exits require careful nexus planning. Taxhub matches you with a CPA experienced in West Coast business tax strategy. Virtual meetings, fixed pricing.
⚠ Not for simple single-state returns. Free filing is fine for straightforward W-2 situations.
Get Matched With a Small Business Tax CPA →Washington's Business & Occupation (B&O) tax is a gross receipts tax — it applies to total business revenue, not profit. The rate depends on business classification: 1.5% for service and professional businesses (consulting, law, accounting, technology services), 0.471% for retail sales, 0.471% for wholesaling, 0.484% for manufacturing. B&O is calculated on all Washington gross revenue above the annual small business threshold ($125,000 for quarterly filers; some businesses get a credit that effectively exempts the first $32,000). Unlike income tax, B&O applies even if the business operates at a loss — making it harder for early-stage businesses with high revenue and low margins. Most profitable service businesses find their B&O cost is substantially less than California's income tax would be.
Washington's 7% capital gains tax (enacted 2022, upheld by state Supreme Court 2023) applies to long-term capital gains above $262,000 per year from sales of stocks, bonds, and other capital assets. It does NOT apply to real estate (excluded), qualified small business stock (B corporation and startup equity may qualify for exclusion), retirement accounts, or agricultural property. For a business owner who sells their business as an asset sale (selling business assets rather than entity shares), the proceeds may or may not trigger the capital gains tax depending on how the sale is structured. A CPA is essential for business exit planning in Washington.
On state income tax: yes, significantly. A software engineer or tech consultant earning $250,000 in Washington pays zero state income tax; in California they pay approximately $22,500/year. A tech startup founder drawing $300,000 in salary saves approximately $28,000/year in state income taxes in Washington vs California. Seattle's B&O tax on service businesses at 1.5% of revenue typically amounts to $2,000–$5,000/year for consultants in this income range — still far below California's income tax. The comparison is most favourable for high-earning service professionals and tech workers.
For employees of major Washington employers: Washington state income tax = $0; California state income tax on a $200,000 tech salary = approximately $16,000–$19,000/year. This is one reason Washington state has seen net inflows of tech talent from California since 2019. Additionally, Washington's equity compensation (RSUs, stock options) is generally not subject to Washington income tax — though capital gains from selling the resulting shares above $262,000 may be. California taxes all RSU income and capital gains at the full progressive rate. For an Amazon or Microsoft employee exercising significant equity, the Washington vs California difference can easily reach $30,000–$80,000+ per year.