What are common donation valuation mistakes?

Common donation valuation mistakes almost all trace back to one problem: using the wrong number for fair market value instead of what the equipment would actually sell for in its current condition on the open market.

The most frequent error is pricing equipment at its original purchase price or the cost of a brand-new replacement, rather than what a used unit in the same condition would fetch today. A five-year-old CNC machine or ultrasound unit isn't worth what it cost new, and the IRS expects that adjustment to be made and documented. A close second is ignoring condition altogether: equipment with missing parts, mechanical issues, or heavy wear is often worth a fraction of a "working" unit's value, and some items may have little or no deductible value at all.

Other common missteps include:

• Relying on outdated sales data or a single high asking price found online instead of genuine, recent sales of comparable used equipment.
• Lumping multiple donated items into one blanket figure instead of itemizing each piece of equipment separately, which makes the valuation harder to defend if questioned.
• Skipping documentation entirely: no photos, no condition notes, no explanation of how the value was reached.
• Missing the paperwork threshold, since equipment donations valued over $5,000 generally require a qualified appraisal and IRS Form 8283.

The fix for all of these is the same: a written valuation that states the equipment's condition, the market evidence used, and the methodology applied. A professional equipment donation appraisal addresses each of these points directly, documenting fair market value in a way that's prepared to withstand IRS scrutiny rather than relying on guesswork or a purchase receipt.