N.Y. Comp. Codes R. & Regs. tit. 9, § 5329.30 – Accounting and financial records.

(1) detailed general ledger accounts identifying all revenue, expenses, assets, liabilities and equity for such licensee;
(2) a record of all investments, advances, loans and accounts receivable balances due to such casino sports wagering licensee;
(3) a record of all loans and other accounts payable by such casino sports wagering licensee;
(4) a record of all accounts receivable written off as uncollectible by such casino sports wagering licensee;
(5) records that identify total winnings paid out:
1. (i) on each sports wager; or
2. (ii) by another accounting period pre-approved in writing by the commission;
(6) records required by such casino sports wagering licensee’s system of internal controls;
(7) work papers supporting the monthly reconciliation of cash accountability; and
(8) other records that the commission may require, in writing, to be maintained.
(c) Retention period.
Notwithstanding anything in this section to the contrary, each accounting record shall be kept by a casino sports wagering licensee for a period of not less than five years from date of creation of such record.

(a) Record of transactions.

Each casino sports wagering licensee shall maintain complete, accurate and legible records of all transactions pertaining to such licensee’s revenues, expenses, assets, liabilities and equity in conformance with generally accepted accounting principles. The failure of a casino sports wagering licensee to maintain such records according to such principles shall be a violation of this section.

(b) Accounting requirements.

The accounting records maintained by a casino sports wagering licensee shall be maintained using a double-entry system of accounting with transactions recorded on the accrual basis and supported by detailed subsidiary records. Such subsidiary records shall include, at a minimum, each of the following: