A preliminary analysis by the Congressional Budget Office out this morning shows the Republicans' bill to repeal health care would add $230 billion to the federal deficit over the next 10 years.
The CBO is the independent agency that scores legislation.
Here's the language from the CBO's letter to Boehner:
"We expect that repealing that legislation would increase budget deficits. ... Consequently, over the 2012-2021 period, the effect of H.R. 2 on federal deficits as a result of changes in direct spending and revenues is likely to be an increase in the vicinity of $230 billion, plus or minus the effects of technical and economic changes to CBO's and JCT's projections for that period."