This document discusses using cost-benefit analysis to evaluate justice policies and pretrial systems. It outlines the steps of CBA, including determining costs and benefits from different stakeholder perspectives. As an example, it analyzes studies that found incarcerating offenders costs $1 but generates $1.74 in benefits to taxpayers and victims. The document recommends CBAs on pretrial systems and provides resources for practitioners, including a knowledge bank and studies on estimating public safety benefits.