The regulator's rules are meant to discourage runs and shield remaining shareholders from costs tied to redemptions.
The 2008 financial crisis exposed major issues with money funds.
The rules increase the percentage of assets that funds must maintain in cash or other assets that can be liquidated quickly.
The money-market industry, a big winners as interest rates rise, is getting another lift.
Bank of America has estimated the issuance wave could have the same impact as a quarter-point interest-rate hike.
Even if the debt crisis resolved, Treasury will need to scramble to replenish its dwindling cash buffer, investor say.
Tax collections will play a big role in the upcoming debt ceiling debate.
The firm's strategists said "we're going to be living with inflation."
Money-market mutual funds are proving irresistible to investors wary of banks.
The race is on to raise the debt ceiling before the new year, when a new Congress is sworn in.