"Repealing the entire ACA would leave no funds available for 'replace' legislation, and in fact would require further deficit reduction to avoid adding to the debt," the report said, "However, a number of partial repeal options also exist."
The government could achieve major savings -- more than $1.5 trillion over 10 years -- if it repealed the coverage provisions including the subsidies and Medicaid expansion alone. However, eliminating the laws taxes' and other revenue boosters would cost the government $800 billion over 10 years, while restoring the ACA cuts to Medicare and Medicaid, and other related cuts would cost another $1.1 trillion over 10 years.
It also noted that repealing the coverage and tax provisions provisions with a two- or four-year delay would reduce the the savings of repealing those provisions.
The report recognized the trade-offs that come with partial repeal:
If policymakers repealed only the individual and employer mandates, the government would save about $300 billion over a decade as fewer Americans took advantage of government subsidized health care. Assuming that “guaranteed issue” and related insurance regulations remained in place, CBO estimates repealing the individual mandate would increase the number of individuals without insurance by about 15 million (repealing the employer mandate would have a small additional effect). Modifications to guaranteed issue and related rules could increase the insurance rate but would likely also reduce budgetary savings from repealing the mandates.
The report urged lawmakers to "aim to continue the recent slowdown in
health care costs," by "building upon the parts of the Affordable Care Act that appear to have worked to slow cost growth, learning from the parts that have not, and pursuing new changes to address areas of health reform that the ACA may have missed."