From the summary of the CBO’s Reconciliation Recommendations of the Senate Committee on Finance:
The staff of the Joint Committee on Taxation (JCT) estimates that enacting the legislation would reduce revenues by about $1,633 billion and decrease outlays by $219 billion over the 2018-2027 period, leading to an increase in the deficit of $1,414 billion over the next 10 years. A portion of the changes in revenues would be from Social Security payroll taxes, which are off-budget. Excluding the estimated $27 billion increase in off-budget revenues over the next 10 years, JCT estimates that the legislation would increase on-budget deficits by about $1,441 billion over the period from 2018 to 2027.
For an analysis see this Washington Post story. — Joe