The statement accurately reflects the official projection reported by the Congressional Budget Office (CBO) in its most recent Budget and Economic Outlook. Multiple primary CBO publications, including the Director’s Statement and the 2026–2036 outlook documents, explicitly state that projected federal deficits over the next decade will be approximately $1.4 trillion higher than in the previous baseline forecast. This figure represents an upward revision of cumulative deficits over the ten-year period, not the total level of deficits themselves. The information is corroborated by independent summaries from reputable outlets such as PBS and policy organizations that rely directly on CBO data. There are no credible primary sources contradicting this projection. Given the authority and consistency of the CBO documents and the corroborating coverage, the claim that CBO projects U.S. federal budget deficits will increase by an additional $1.4 trillion over the next ten years is highly likely to be true.