Contribution of motor vehicle, boat, or airplane.
If you deduct more than $500 for a contribution of a motor vehicle, boat, or airplane, you must also attach a statement from the charitable organization to your paper return. The organization may use Form 1098-C to provide the required information. If your total deduction is over $5,000 ($500 for certain contributions of clothing and household items (discussed next)), you may also have to get appraisals of the values of the donated property. See Form 8283 and its instructions for details.
Contributions of clothing and household items.
A deduction for these contributions will be allowed only if the items are in good used condition or better. However, this rule doesn't apply to a contribution of any single item for which a deduction of more than $500 is claimed and for which you include a qualified appraisal and Form 8283 with your tax return.
Recordkeeping.
If you gave property, you should keep a receipt or written statement from the organization you gave the property to or a reliable written record that shows the organization's name and address, the date and location of the gift, and a description of the property. For each gift of property, you should also keep reliable written records that include:
How you figured the property's value at the time you gave it. If the value was determined by an appraisal, keep a signed copy of the appraisal;
The cost or other basis of the property if you must reduce it by any ordinary income or capital gain that would have resulted if the property had been sold at its fair market value;
How you figured your deduction if you chose to reduce your deduction for gifts of capital gain property; and
Any conditions attached to the gift.
If the gift of property is $250 or more, you must also have a contemporaneous written acknowledgment from the charity. See Gifts of $250 or more , earlier, for more information. Form 8283 doesn't satisfy the contemporaneous written acknowledgment requirement, and a contemporaneous written acknowledgment isn't a substitute for the other records you may need to keep if you gave property.
If your total deduction for gifts of property is over $500, you gave less than your entire interest in the property, or you made a qualified conservation contribution, your records should contain additional information. See Pub. 526 for details.