CBO Show Your Work Act

HR 1492, the CBO Show Your Work Act, requires the Congressional Budget Office (CBO) to publicly publish its fiscal models, data, and detailed methodologies used when estimating the costs and effects of legislation. Specifically, the bill mandates that the CBO make available all models, data preparation routines, and the specific assumptions and computations behind its cost estimates - enabling independent verification by non-CBO staff. This applies to all estimates prepared under the law, with limited exceptions for data protected by other statutes (requiring only descriptive statistics and access details for such data). The changes take effect six months after the bill becomes law. The bill directly affects the CBO’s internal processes and transparency practices, not the legislative content itself.