P3: party totals by what moved the money, once (defects 14, 11, 24)

Each party's part of an entry is signed as its own account would show it,
with a direction and its cash and in-kind amounts; a reversal is its
original negated. Totals on a cash or all basis: for a member, all equals
the members' equity statement and cash the K-1's cash. Money is cash,
cards and the financing accounts, and a liability credit never pays its
own creditor (creditor_of), so accruals and declared distributions count
once. tin_last4 from the TIN or W-9 facts.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01T3gXMVt7XJPi6ens1or9Dj

docs/spec/sources/helvering-v-price-1940.md

@@ -0,0 +1,11 @@
+# A promise to pay is not payment: Helvering v. Price, 309 U.S. 409 (1940)
+Governs why a party's totals never count a promise as a payment (rules.md B-35): a bill, a fee charged on the party's own card, equipment bought on the seller's own note, or a distribution still owed counts when it is paid, not when it is promised. The Supreme Court held that a taxpayer reporting on the cash basis who gave his own note, even a secured one, had not paid. Opinions of the Supreme Court are works of the United States Government (`us-public-domain-status.md`).
+
+## Helvering v. Price, 309 U.S. 409, 412-413 (1940)
+Source: <https://tile.loc.gov/storage-services/service/ll/usrep/usrep309/usrep309409/usrep309409.pdf> (United States Reports, Library of Congress)  
+Retrieved: 2026-10-20  
+SHA-256 of the retrieved file (`usrep309409.pdf`): `ac58d7cb0fbe1257c7ad5e75152e540544194c6accabe261b02068f6cebd7efe`
+
+> As the return was on the cash basis, there could be no deduction in the year 1932, unless the substitution of respondent's note in that year constituted a payment in cash or its equivalent. There was no cash payment and under the doctrine of the Eckert case the giving of the taxpayer's own note was not the equivalent of cash to entitle the taxpayer to the deduction.
+
+> Respondent urges that his note was secured, but the collateral was not payment. It was given to secure respondent's promise to pay, and if that promise to pay was not sufficient to warrant the deduction until the promise was made good by actual payment, the giving of security for performance did not transform the promise into the payment required to constitute a deductible loss in the taxable year.

docs/spec/sources/irs-capital-accounts.md

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+# Partners' capital accounts: what a member's money and property count as
+Governs what a member's party totals count (rules.md B-35): a member's capital account rises by the money and the property (net of liabilities on it) the member contributes, and falls by the money and property distributed to them; a partnership liability the member pays for it is money the member contributed. The K-1's capital account analysis (Item L) reports the same contributions and distributions. wanderbooks counts these from the books as they are; the tax-basis figures stay with the CPA.
+
+## Treas. Reg. §1.704-1(b)(2)(iv)(b): basic rules of capital accounts
+Source: <https://www.ecfr.gov/api/renderer/v1/content/enhanced/current/title-26?part=1&section=1.704-1>  
+Retrieved: 2026-10-20  
+SHA-256 of the retrieved file (`ecfr7041.html`): `0eafa6f27d7df3a3cc93ebad7cbdc0c37a49b055c53a43d5e5e8efa29f80beeb`
+
+> (b) Basic rules. Except as otherwise provided in this paragraph (b)(2)(iv), the partners' capital accounts will be considered to be determined and maintained in accordance with the rules of this paragraph (b)(2)(iv) if, and only if, each partner's capital account is increased by
+
+> (1) the amount of money contributed by him to the partnership,
+
+> (2) the fair market value of property contributed by him to the partnership (net of liabilities that the partnership is considered to assume or take subject to), and
+
+> (3) allocations to him of partnership income and gain (or items thereof), including income and gain exempt from tax and income and gain described in paragraph (b)(2)(iv)(g) of this section, but excluding income and gain described in paragraph (b)(4)(i) of this section; and is decreased by
+
+> (4) the amount of money distributed to him by the partnership,
+
+> (5) the fair market value of property distributed to him by the partnership (net of liabilities that such partner is considered to assume or take subject to),
+
+## Treas. Reg. §1.704-1(b)(2)(iv)(c): treatment of liabilities
+Source: as above (the same retrieved file).
+
+> (c) Treatment of liabilities. For purposes of this paragraph (b)(2)(iv),
+
+> (1) money contributed by a partner to a partnership includes the amount of any partnership liabilities that are assumed by such partner (other than liabilities described in paragraph (b)(2)(iv)(b)(5) of this section that are assumed by a distributee partner) but does not include increases in such partner's share of partnership liabilities (see section 752(a)), and
+
+> (2) money distributed to a partner by a partnership includes the amount of such partner's individual liabilities that are assumed by the partnership (other than liabilities described in paragraph (b)(2)(iv)(b)(2) of this section that are assumed by the partnership) but does not include decreases in such partner's share of partnership liabilities (see section 752(b)).
+
+## Partner's Instructions for Schedule K-1 (Form 1065), Item L
+Source: <https://www.irs.gov/instructions/i1065sk1>  
+Retrieved: 2026-10-20  
+SHA-256 of the retrieved file (`i1065sk1.html`): `87d46c0e6c07eb0b642e9479f72aed7c35ed005cab0b1c644af5572a9df22d7c`
+
+> The partnership must report your beginning capital account and ending capital account for the year using the tax-basis method, including the amount of capital you contributed to the partnership during the year, your share of the partnership’s current-year net income or loss as computed for tax purposes, any withdrawals and distributions made to you by the partnership, and any other increases or decreases to your capital account determined in a manner generally consistent with figuring the partner’s adjusted tax basis in its partnership interest (without regard to partnership liabilities), taking into account the rules and principles of sections 705, 722, 733, and 742.