Form 8283. Form 8283 is an IRS tax form used to substantiate non-cash charitable contributions, like stock and cryptocurrency. Individuals, partnerships, and corporations use IRS Form 8283 to report information to the IRS about noncash charitable contributions when the amount of their contribution for all noncash gifts is more than $500. For donors whose previous year noncash charitable contributions exceed $500, we provide a blank IRS Form 8283 as a courtesy to our donors, along with the necessary information to complete the Form, excluding cost basis information, which is not furnished to us at the time of transfer. Cost basis information can be obtained by logging into your brokerage account and reviewing positions and holdings activity.