CandidProvides copies of nonprofits’ IRS Form 990. Form 990's are submitted by tax-exempt organizations and non-profit organizations to provide the Internal Revenue Service with annual financial information. Good resource to finding financial and executive information. Also provides contact information as well as Employer Identification Numbers (EIN) numbers. Also known as the Tax Identification Number (TIN), Federal Employer Identification Number (FEIN) or the Federal Tax Identification Number, the EIN is a unique nine-digit number assigned by the Internal Revenue Service (IRS) to business entities operating in the United States for the purposes of identification.