A charitable organization soliciting in Maryland generally must file documents with the Office of the Secretary of State. Charitable entities in Maryland should complete this application to qualify as distributors of disposable diapers, other hygiene products for infants and.Find out what the IRS requires, what donors expect, and our recommendations for acknowledging contributions. This alert provides an overview of the charitable solicitation requirements of the District of Columbia, Virginia, and Maryland. The Comptroller's Office issues sales and use tax exemption certificates to qualifying organizations and is renewed every five years. Registration Requirement. Where can I mail a donation? Please follow the steps below to make your check donation via a secure P.O. box. There's no charity tax deduction minimum donation amount required to claim a charitable deduction. Claiming tax-deductible charitable donations.