Snapshot: These links and interpretations were reviewed on August 30, 2026. Government pages and rules change. Each guide carries its own review date and scope boundary.

Federal baseline

Federal

Launch your business

U.S. Small Business Administration

Topic
Business launch baseline
Reviewed
August 30, 2026
Federal

State registration lookup

U.S. Small Business Administration

Topic
Official state registration and filing-office lookup
Reviewed
August 31, 2026
Federal

When to get a new EIN

Internal Revenue Service

Topic
When an existing business may need a new EIN
Reviewed
October 10, 2026
Federal

Workplace posters

U.S. Department of Labor

Topic
Workplace notices
Reviewed
August 30, 2026

California layer

California

bizfile California

California Secretary of State

Topic
Formation and entity filings
Reviewed
October 10, 2026
California

Service of Process

California Secretary of State

Topic
California agent-for-service-of-process procedures
Reviewed
August 31, 2026
California

Starting a Business

California Secretary of State

Topic
California structure, permits, and launch baseline
Reviewed
August 30, 2026

Correction standard

When a primary source changes, the affected guide should be updated, its review date should move, and a material change should be added to the update ledger. We do not silently preserve a commercially useful claim after the source no longer supports it.

Found a source change or a claim that needs review? Send a correction with the affected page and the strongest available primary source.