A Nonprofit Membership Form Template is a form template designed to streamline the membership process for nonprofit organizations. To form a Nonprofit Public Benefit.Find forms, samples and fees for most business entity filings here. This handy comprehensive checklist to help nonprofit 501(c)(3) organizations stay up-to-date with annual filing requirements. To apply for Non-Profit Membership, complete and submit the form below. You can also download a printable copy to complete and submit. To achieve tax-exempt status, you will need to fill out either Form 1023 or Form 1023-EZ. A membership form is a form that you give to potential members who want to join your organization. 501(c)(3) nonprofits apply using Form 1023 or Form 1023-EZ. Complete SI-100, Statement of Information (Domestic Nonprofit Corporation) and file it with the California Secretary of State.