IRS API
IRS (irs.gov) has 2 public methods: check charity status and get tax form. Each costs 1 credit per completed run (1¢ with pay as you go); failed runs are free.
Unofficial. Not affiliated with or endorsed by IRS.
Methods
2Looks up an organization in the IRS Tax Exempt Organization Search by name or EIN. It reports whether donations are deductible, whether the organization was automatically revoked, and its recent Form 990 filings.
Returns legal name, EIN, location, deductibility status, revocation, recent Form 990 filings
Readirs.gov/check_charity_statusFinds current IRS forms, instructions and publications by number or purpose. Each result has its revision and posting dates, PDF links and a short explanation.
Returns form number, title, type, revision date, posted date, PDF link, instructions PDF link, About page link, explanation
Readirs.gov/get_tax_form