California Tax Deductions for Small Business Owners

What deductions am I eligible for as a small business owner in California?

If you’re running a small business in California, you’re likely wondering how to reduce your tax bill — legally and smartly. The IRS and the state of California offer a variety of deductions designed to support entrepreneurs and business owners. Here’s what you should know:

● Startup Costs

Deduct up to $5,000 in expenses like market research, legal/accounting fees, branding, and licenses.

● Home Office Deduction

A portion of rent, utilities, internet, and insurance — if used exclusively for business.

● Vehicle Expenses

Use the standard mileage rate or actual expenses for fuel, repairs, and depreciation.

● Office Supplies & Equipment

Laptops, printers, software, and everyday supplies — expensed under IRS de minimis rule.

● Marketing & Advertising

Website hosting, digital ads, branding, business cards, and event promotion.

● Health Insurance Premiums

Self-employed owners may deduct their own premiums and family coverage.

● Employee Wages & Benefits

Payroll, taxes, bonuses, benefits, and contractor payments are fully deductible.

● Professional Services

Legal, bookkeeping, tax preparation, and consulting fees.

● Business Insurance

Liability, property, cyber, and workers’ compensation premiums.

● Rent & Utilities

For business locations, including retail, office, or warehouse space.

● California-Specific Credits

CCTC, R&D Tax Credit, New Employment Credit, Small Business Hiring Credit.

● Need help identifying the right deductions for your California business?

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