Internal Revenue Service
The charities and non-profits site for the Internal Revenue Service.
Internal Revenue Service – Publication 78
Learn if an organization is exempt from federal taxation, and determine
how much of your contributions to that organization are tax deductible.
Internal Revenue Service – Political Organizations
Tax information for political organizations.
GuideStar
A national database of nonprofit organizations; also shows Forms
990 for section 501(c)(3) organizations.
California
Office of the Attorney General, Charitable Trusts
Regulating agency for charities in California.
New York
Office of the Attorney General, Charities
Regulating agency for charities in New York.
The Nonprofit Times
Business publication for nonprofit management.
The Chronicle of Philanthropy
Newspaper for the nonprofit sector.
Federal Election Commission
Laws and resources for federal elections.
California Fair Political Practices Commission
California political campaign, lobbying, and conflict of interest laws.
California Secretary of State
California nonprofit organizations.
National Association of Attorneys General
Resource for state charitable solicitation registration.
Unified Registration Form
Multiple state charitable solicitation registration.
United States Postal Service
Main site for USPS postal information.
United States Postal Service – Publication 417
Nonprofit Standard Mail Eligibility, USPS.
United States Postal Service – Quick Service Guide 670
Addresses nonprofit standard mail rates eligibility.