Is a donated boat's deduction the appraised value or the charity's sale price?
If the charity sells the vessel and the claimed value exceeds $500, the deduction is generally capped at the gross sale proceeds shown on the acknowledgment, even when the appraisal is higher. Fair market value survives only where the charity makes significant intervening use of the boat, materially improves it, or applies the mission-use rules.
Why does the IRS want a marine surveyor to value donated boats?
Because condition drives boat value: Publication 561 says that except for inexpensive small boats, valuation should be based on a marine surveyor's appraisal. Guide values act as a ceiling, not a default; engine trouble, hull damage, or excessive wear pushes fair market value below the book number.
What substantiation does a boat donation over $5,000 require?
A qualified appraisal and Form 8283, Section B, attached to the return, with the appraisal generally dated no earlier than 60 days before the donation and no later than the return's due date including extensions. That timing is a deduction rule, separate from any DMV, lender, or insurance paperwork tied to transferring the vessel.
Can the charity tell the donor what the boat is worth?
No. The donor is responsible for substantiating fair market value, and a receipt from the charity does not protect an unsupported number. Keep the survey, comparable listings, photos, and condition documentation, because the IRS can challenge the value even after the charity accepts the boat.