Republicans are using Congress’s official budget scorer as a whipping boy, as they argue a major package of President Trump’s tax priorities is costless, despite multiple projections placing the plan’s price tag at trillions of dollars over the next decade.

While the Congressional Budget Office (CBO) has not yet released its final estimate of House Republicans' “One Big Beautiful Bill Act” as it advances on Capitol Hill, Republicans have increased attacks on the nonpartisan office over its cost projections of the party’s tax cuts plan — which seeks to permanently lock in expiring provisions in Trump’s 2017 tax plan, along with a host of other add-ons.

“The CBO sometimes gets projections correct, but they’re always off every single time when they project economic growth,” Speaker Mike Johnson (R-La.) argued during an appearance on NBC’s “Meet The Press” on Sunday, asserting the bill “is going to reduce the deficit.”

“They always underestimate the growth that will be brought about by tax cuts and reduction in regulations,” he said, while touting Trump’s 2017 tax plan as bringing “about the greatest economy in the history of the world, not just the U.S.”

Trump also fumed about the CBO in a Friday post on Truth Social, while accusing the office of “purposefully” underscoring economic growth projections of his tax cuts.

“The Democrat inspired and ‘controlled’ Congressional Budget Office (CBO) purposefully gave us an EXTREMELY LOW level of Growth, 1.8 percent over 10 years — how ridiculous and unpatriotic is that!” he wrote on social media.

“I predict we will do 3, 4, or even 5 times the amount they purposefully 'allotted' to us (1.8 percent) and, with just our minimum expected 3 percent growth, we will more than offset our........

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