D.C. Mun. Regs. tit. 30, r. 30-941
The prize pool for all prize categories shall consist of fifty percent (50%) of each drawing period's sales, including tax, after the prize reserve accounts are funded consistent with all agreements in place governing the conduct of Hot Lotto®.
The prize money allocated to the Grand Prize category shall be awarded equally to the number of game boards winning a Grand Prize.
Any amount remaining in the prize pool at the end of each game shall be carried forward to a replacement game or expended in a manner consistent with all agreements in place governing the conduct of Hot Lotto® and in accordance with District law.
An amount equal to up to one percent (1%) of a Lottery's sales, including tax, shall be deducted from a Lottery's Grand Prize Pool and placed in trust in one or more prize reserve accounts when the Grand Prize exceeds $2,000,000.00.
An additional two percent (2%) of a Lottery's sales, including tax, shall be deducted from a Lottery's Grand Prize Pool and placed in trust in one (1) or more prize reserve accounts when the Grand Prize exceeds $5,000,000.00 until the Lottery's share of the prize reserve account(s) reach(es) the amounts designated by MUSL Product Group.
The MUSL Product Group has established the following prize reserve accounts for the Hot Lotto® game: the Prize Reserve Account ("PRA"), which is used to guarantee the payment of valid, but unanticipated, Grand Prize claims that may result from a system error or other reason, and to fund deficiencies in low-tier prize payments (subject to the limitations of these rules); the Set-Aside Account, which is used to guarantee payment of the minimum or starting Grand Prize; the Hot Lotto® Sizzler Rollover Account, which is described in Part III of these rules; and the Lower Tier Prize Pool, which holds the temporary balances that may result from having fewer than expected winners in the low-tier set prize categories. The source of the Lower Tier Prize Pool funds is the Party Lottery's weekly prize contributions less actual set prize liability.
D.C. Mun. Regs. tit. 30, r. 30-941