A business owner donates real estate worth $4.4 million to a charity. The nonprofit sends a thank-you letter. The donor claims the deduction, spreads it across several years of carryforward, and moves on. Four years later, the IRS disallows the entire thing — not because the property wasn't actually donated, not because the $4.4 million valuation was wrong, but because the thank-you letter forgot to say one sentence: whether the donor got anything back in exchange for the gift.
That's not a hypothetical. It's what happened in Wells v. Commissioner, a 2026 Tax Court decision that should worry every small business owner who has ever donated appreciated property, inventory, or a chunk of company stock to charity. The case is a reminder that the IRS's rules for substantiating charitable deductions aren't suggestions — they're a strict checklist, and missing even one item can cost you the entire deduction regardless of how legitimate the gift was.
What happened in Wells v. Commissioner
William and Ruth Wells, through their entity Chamberlain LLC, donated a piece of real property in Mississippi — the former Chamberlain-Hunt Academy campus — to a charitable organization at the end of 2016. Chamberlain LLC had purchased the property for $200,000 a few years earlier. On donation, Mr. Wells claimed the property was worth $4.42 million based on an appraisal, generating a large charitable contribution deduction that flowed through the LLC's partnership return and carried forward into the Wells' personal returns for 2019 through 2021.
The IRS audited the carryforward deductions and disallowed them. Not because the appraisal was wrong. Not because the donation didn't happen. The IRS's position — and the Tax Court's eventual ruling — turned entirely on paperwork: the acknowledgment letter the charity sent back to the Wells didn't meet the legal requirements for substantiating a charitable gift.
The letter that sank a $4.4 million deduction
Under Section 170(f)(8) of the tax code, any charitable contribution of $250 or more requires a "contemporaneous written acknowledgment" (CWA) from the receiving organization before the donor can claim a deduction. That acknowledgment has to include specific elements:
- The amount of cash, or a description (not appraised value) of any non-cash property, donated
- A statement of whether the charity provided any goods or services in exchange for the gift
- If goods or services were provided, a description and good-faith estimate of their value — or, if the only benefit was intangible religious benefit, a statement saying so
In the Wells case, the acknowledgment letter from the charity had real problems: it was undated, and — critically — it never addressed whether the Wells received anything in return for the donation. The taxpayers tried to patch the gap by pointing to a combination of four different documents: the acknowledgment letter, Form 8283 (the noncash charitable contributions form), a donation letter, and the deed itself. But the court noted that only two of those four documents actually came from the donee organization — the donation letter and deed were signed by Mr. Wells himself, as the donor, not by the charity. You can't satisfy a requirement that the donee attest to something by having the donor attest to it instead.
The Tax Court was blunt about the standard here: "substantial compliance does not apply in this context." Close enough doesn't count. Every required element has to appear in a document the charity itself actually produced and delivered to the donor before the return is filed. The fact that the numbers matched — the claimed deduction lined up with the appraised value — was irrelevant. The deduction failed on documentation grounds alone, which meant the court never even had to reach the question of whether $4.42 million was the right valuation.
The one bright spot: the penalty got tossed
The IRS also assessed a 20% accuracy-related penalty under Section 6662 on top of disallowing the deduction. Here the Wells caught a break. They showed they had relied in good faith on their CPA of 30 years, who they'd given all the relevant documents to and who they'd specifically asked, by email, to confirm the acknowledgment letter was sufficient. The court found that reliance reasonable and abated the penalty — even while upholding the full disallowance of the deduction itself.
The lesson inside the lesson: reasonable-cause defenses can save you from a penalty, but they can't rescue a deduction that fails a strict statutory requirement. Good faith reliance on a professional is a shield against being punished for a mistake — it's not a substitute for the mistake not happening in the first place.
Why "strict compliance" catches so many taxpayers off guard
Most tax rules give you some room to be substantially right. Missed a small detail on a filing but the overall intent and numbers were correct? Courts often let that slide under a "substantial compliance" doctrine. Section 170(f)(8) is different by design. Congress wrote it as a strict, checklist-style requirement specifically because charitable deduction abuse — inflated valuations, fabricated gifts, double-dipping — was a persistent enforcement problem. The trade-off is that legitimate donors like the Wells, who really did give away a multi-million-dollar property, lose the deduction entirely over what looks like a technicality.
This isn't a one-off. The IRS's Taxpayer Advocate has flagged the CWA rules for years as one of the most litigated issues in the tax code precisely because so many acknowledgment letters — often drafted by well-meaning but under-resourced nonprofits — leave out the goods-and-services statement or get the timing wrong. A compliant letter needs to reach the donor on or before the earlier of the date the return is filed or its due date (including extensions). A letter that shows up in February for a February 1 filing, or one drafted after the fact to paper over a gap, doesn't count as contemporaneous no matter how accurate it is.
What this means if you run a business and donate to charity
If your business gives cash, inventory, equipment, or real estate to a nonprofit — whether it's a single large gift or a pattern of smaller ones — the Wells case is a checklist you should actually run through before you file:
- For any single gift of $250 or more, get a written acknowledgment from the charity, not just a thank-you note. A generic "thank you for your generous support" email from a development office is not the same document the law requires.
- Confirm the letter states whether you received anything in return. Even if the answer is "nothing," the letter needs to say so explicitly — silence on this point is a fatal defect, as the Wells learned.
- Make sure it's dated and comes from the charity, not from you. A donation letter or deed you drafted and the charity merely countersigned does not substitute for the charity's own acknowledgment.
- Get it before you file, not after. If tax season arrives and you don't have a compliant letter in hand, follow up with the organization immediately — don't wait for an audit to discover the gap.
- For noncash gifts over $5,000, remember Form 8283 is a separate requirement layered on top of the CWA, not a substitute for it. Wells' team learned that painfully: the form and the letter both matter, and neither one can cover for a defect in the other.
- Keep records of who confirmed what. The Wells avoided a penalty specifically because they could show they'd asked their CPA, in writing, to review the acknowledgment. That paper trail is what separated "no deduction" from "no deduction plus a 20% penalty."
If your business works with a nonprofit repeatedly — sponsorships, in-kind donations, annual giving — it's worth asking their development office directly whether their standard acknowledgment letter includes the goods-and-services statement. Many don't, because most small donors never claim enough to trigger an audit. A $4.4 million gift does.
Keep Your Charitable Giving and Everything Else Documented
Cases like Wells v. Commissioner are really a story about recordkeeping, not generosity — the gift was real, the value was real, and the deduction still evaporated because the supporting paperwork wasn't precise. The same discipline that would have saved this deduction — knowing exactly what documentation exists, when it was created, and who it came from — is the same discipline that protects every other line on a business's books. Beancount.io provides plain-text accounting that gives you complete transparency and control over your financial records, from routine expenses to the kind of substantiation the IRS actually asks for when it comes calling. Get started for free and keep your records as strict as the rules that govern them.