Does California Recognize Common-Law Partnerships?

No. California does not recognize common-law partnerships or common-law marriages. Unmarried couples cannot establish legal partnership status through cohabitation, shared finances, or mutual intent alone. To operate a business together, partners must file formal formation documents with California's Secretary of State. The most common option is forming an LLC under California Corporations Code § 17702.01, which requires Articles of Organization (Form LLC-1), a $70 filing fee, and 3–5 business day processing.

What Unmarried Business Partners Must Do

California requires explicit legal documentation. Simply operating a business together does not create a recognized partnership without formal filing.

LLC Formation (Recommended) File Articles of Organization naming both members, designate a registered agent in California, and specify whether the LLC is member-managed or manager-managed (Cal. Corp. Code § 17702.01). Cost: $70. Processing: 3–5 business days via BizFile.

Partnership Agreement Execute a written partnership agreement defining ownership percentages, profit distribution, decision-making authority, and exit procedures. No state filing required, but registration is recommended for clarity.

Liability Protection Without formal entity formation, unmarried partners face unlimited personal liability for business debts. An LLC provides charging order protection under Cal. Corp. Code § 17705.03, limiting creditor access to personal assets.

Community Property Considerations

California is a community property state, but community property rules apply only to married couples—not unmarried partners. Each unmarried partner's personal assets remain individually exposed unless protected by an LLC structure.

Domestic Partnership Distinction

California previously recognized registered domestic partnerships under Family Code provisions. As of January 1, 2020, same-sex couples must marry rather than register. Opposite-sex couples over 62 may still register. Domestic partnership registration is separate from business formation and does not automatically create business partnership rights.

Next Steps

Choose your entity: LLC is most common for small businesses.
File Articles of Organization: Submit Form LLC-1 online ($70, 3–5 days).
Draft an operating agreement: Define ownership, profit-sharing, and management rights in writing.
Consult a California business attorney: Ensure your structure protects both partners and addresses liability, taxes, and succession planning.

Forming an LLC takes 3–5 days and costs only $70—far less than resolving partnership disputes later.

This is general information, not legal advice.