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For many California small business owners, the choice between operating as an LLC taxed as a sole proprietorship or partnership versus electing S-corporation tax treatment is worth tens of thousands of dollars annually in self-employment tax savings. This is not a commonly understood planning opportunity — most small business owners either default to their formation document’s default tax treatment or choose based on incomplete information. Understanding the S-corporation election in the California context can meaningfully change your annual tax bill.
The Self-Employment Tax Problem
Sole proprietors and single-member LLC owners who haven’t made an S-corp election pay self-employment tax — the combined employee and employer share of Social Security and Medicare — on their entire net business income. At 15.3% on the first $160,200 of net self-employment income and 2.9% (for Medicare) above that threshold, self-employment tax is a substantial cost that comes on top of federal and California income taxes. A California business owner with $200,000 in net business income pays approximately $28,000 in self-employment tax before any income tax.
How the S-Corporation Election Helps
When an LLC elects to be taxed as an S-corporation (by filing IRS Form 2553), the business owner becomes both an owner and an employee of the company. The owner must receive a “reasonable salary” for their services — subject to payroll taxes — but the remaining business profit passes through as a distribution that is NOT subject to self-employment tax. This salary/distribution split reduces the self-employment tax base, potentially saving thousands of dollars annually.
Example: A business owner with $200,000 in net business income sets a reasonable salary of $80,000. They pay payroll taxes (15.3%) on $80,000 = $12,240. The remaining $120,000 passes as a distribution subject to income tax but not self-employment tax — saving approximately $10,000 to $14,000 in self-employment tax relative to the non-election structure. The savings must be weighed against the additional payroll processing costs and accounting complexity of running payroll, which typically run $2,000 to $4,000 per year. Net savings: typically $6,000 to $12,000 annually at the $200,000 income level.
The California Complication
California adds a specific wrinkle: California does not conform to federal S-corporation treatment in all respects. California imposes a 1.5% franchise tax on S-corporation net income (with a minimum of $800), and California LLCs that elect S-corporation treatment still owe the LLC fee on gross receipts. The California-specific analysis sometimes produces different results than the federal analysis — occasionally making the S-corp election less advantageous in California than it would be in a zero-income-tax state.
Running this analysis correctly requires a California CPA who understands both the federal S-corp rules and California’s nonconformity. The election, once made, can be difficult to revoke. Making it without a proper California-specific analysis is a mistake that some business owners discover only when their California tax bill is higher than expected.
When the S-Corp Election Makes Sense
The S-corp election generally makes sense for California LLCs when: net business income consistently exceeds $80,000 to $100,000 per year; the owner actively participates in the business and can justify a reasonable salary that is meaningfully below total profit; the business has stable, predictable income that makes payroll processing manageable; and the California-specific analysis confirms that the federal self-employment tax savings exceed the California franchise tax cost of the election.
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