The donor side (IRS Pub. 526 / Pub. 561) and the charity side (FASB ASC 958-605 + Pub. 1771) follow different rules — and both are routinely violated. Services aren't deductible. Used clothing has limits. Property gets FMV on the deduction side but cost basis on the charity-revenue side if it'll be sold. Written acknowledgments require specific language. This tool walks each item through both lenses and produces the substantiation text Pub. 1771 actually requires.
The rules split sharply by category. This single question determines whether the donor gets a deduction at all, and how much.
Pub. 561 governs how FMV is determined for non-cash gifts. The evidence requirements scale with the dollar amount. Above $5,000, qualified appraisals become mandatory for most categories.
What this donor can actually claim on their Form 1040 Schedule A. The rules for the donor are stricter than most acknowledgment letters imply.
How the gift hits the charity's books under GAAP (ASC 958-605) and Form 990. The charity-side number is often different from the donor-side number.
The two-sided answer, the acknowledgment letter language Pub. 1771 actually requires, and the documentation checklist.
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Educational and informational purposes only. This calculator and any output it produces are intended solely for general educational and decision-support purposes. They do not constitute investment, tax, legal, accounting, appraisal, lending, insurance, or any other professional advice, and they do not create a fiduciary, attorney-client, accountant-client, or advisor-client relationship of any kind.
Estimates based on your inputs. Tax law (IRC §170, related regulations, IRS Pub. 526/561/1771) and accounting standards (FASB ASC 958-605, ASU 2020-07) are summarized in this tool but are not exhaustive. Specialized gift types (bargain sales, partial interests, conservation easements, qualified appraisals over $500K, vehicle/aircraft, art with related-use issues, donor-advised funds, private foundations, supporting organizations) follow specific rules not fully captured here. The draft acknowledgment letter is a starting template — not legal advice or a substitute for review by your tax counsel.
Consult your own qualified professionals. Before acting on anything calculated here, consult your own attorney, CPA, or qualified appraiser as applicable.
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