The report found the program will cost around $84 billion less than expected.
It would also reach around 3 million fewer citizens than intended because states have the option to opt-out of extending Medicaid, according to the Post.
In conjunction, the Post reports the government would also save around $6,000 for every individual that does not enroll in Medicaid up to the year 2022.
However, for every person who chooses subsidized coverage instead of receiving Medicaid, the federal government would have to spend between $9,000 and $3,000 more than the cost of providing Medicaid.
With this in mind, the CBO concludes the expense for total exchange subsidies will be lesser than the total federal spending for Medicaid, according to the Post.
The report also projects that only one-third of qualified Medicaid beneficiaries are living in states that will support the program in its first year.
In addition, the CBO believes a second third of qualified beneficiaries are expected to reside in states that will postpone participation for an additional year, the Post reports.