Congressional Budget Office Cost Estimate: H.R. 1698, Iran Ballistic Missiles and International Sanctions Enforcement Act [open pdf - 88KB]
From the Document: "H.R. 1698 would amend the Iran Sanctions Act (Public Law 104-172), primarily to apply sanctions on people and entities involved with Iran's ballistic missile program and those who provide conventional weapons to or receive them from that country. In addition, H.R. 1698 would require periodic reports to the Congress on the implementation of the bill and related matters. Implementing H.R. 1698 would increase administrative costs at the Department of State and the Department of the Treasury. The Administration did not respond to requests for information but based on the costs of implementing similar legislation, CBO [Congressional Budget Office] estimates that administering the specified sanctions and implementing the reporting requirements would cost less than $500,000 each year and would total $1 million over the 2018-2022 period, subject to the availability of appropriated funds."
Congressional Budget Office: https://www.cbo.gov/