Complete item G in the heading section of Form 990, on page 1. 6. If this application is for Forms 990-PF, 990-T, 4720, or 6069, enter any refundable credits and estimated tax payments made.If such a trust doesn't have any taxable income under subtitle A of the Code, it can file Form. Do not enter social security numbers on this form as it may be made public. If "Yes," complete Part I of Schedule L (Form 990 or 990EZ). You must complete Part IV, Sections A and D, and Part V. Yes. Complete if the organization is a section 501(c)(3) organization or a section. 4947(a)(1) nonexempt charitable trust. Form 990 includes 12 parts. Here are step-by-step instructions for completing each part.