An analysis by the nonpartisan Office of Legislative Services said the gap could reach $5 billion.
The analysis from the nonpartisan Congressional Budget Office was more pessimistic.
That is well under other estimates including the $141 billion estimate of the nonpartisan Congressional Budget Office.
The health-care law, the nonpartisan Congressional Budget Office says, will bring the deficit down.
The nonpartisan Office of Legislative Services believes revenue will be even lower - by an additional $188 million over the two years.
Economists at the nonpartisan Congressional Budget Office have reached similar conclusions.
That figure, which comes from the nonpartisan Congressional Budget Office, does not include the across-the-board cut.
Modeled on the nonpartisan Congressional Budget Office, it did not come to life with financing until 1996.
Everyone expects the estimates that the nonpartisan Congressional Budget Office will release tomorrow to look very similar.
Repealing the tax altogether could cost up to $900 billion over the same period, the nonpartisan Congressional Budget Office said.