The package taking shape in Congress would add $300 billion for the Paycheck Protection Program - which ran out of money last week.
That emergency fund was designed to help small businesses keep people on the payroll during the Coronavirus restrictions.
While it worked for many small businesses, a number of people complained they had been shut out of getting money under the original $350 billion approved by the Congress in March.
There reportedly would also be about $50 billion for a different emergency fund, the Economic Injury Disaster Loan, which was also a vital lifeline for some displaced businesses.
The emerging deal would also include $75 billion for hospitals - money eagerly sought by Democrats, and as much as $25 billion to help with Coronavirus testing.