Guide Star click on this link to learn all about 990's and search nonprofits
http://dor.mo.gov/tax/business/sales/forms/1746f.pdf sales tax exemption
http://dor.mo.gov/tax/business/withhold/forms/2009/941fi.pdf Missouri quarterly contribution and wage report
http://dor.mo.gov/tax/business/withhold/forms/2009/mow4.pdf Missouri w4
http://www.irs.gov for all other Federal tax info
http://www.mo.gov state web site for useful information
Tax Guide for Veterans Organizations A tax guide from the IRS for 501 (C) (19) & (4)
http://www.irs.gov/pub/irs-pdf/f990.pdf form 990 to print or fill out and mail to IRS
http://www.irs.gov/pub/irs-pdf/i990sa.pdf forms 990 & 990EZ instructions
http://www.irs.gov/pub/irs-pdf/f990ez.pdf form 990EZ, for chapters whose gross receipts are normally $100,000 or less
http://dor.mo.gov/tax/business/withhold/forms/2009efile.pdf Missouri withholding return due dates