see link. https://www.irs.gov/charities-non-profits/form-990-series-which-forms-do-exempt-organizations-file-f...

Use the first option. It will do 990 EZ if applicable, otherwise it does a plain vanilla 990. 

@George4Tacks Poster mentioned a 990PF, and if that is true he may need to file 990PF. From instructions at above link, 

"Private foundation - regardless of financial status files 990PF"