To inform proactive management actions supporting community resilience to wildfires, we developed a new software package calledFireLossRate. This package in R helps the user to compute wildfire impacts on residential structures at the Wildland Urban Interface (WUI). The package integrates spatial information about exposed structures, empirical equations that estimate the loss rate of structures affected by wildfires as a function of fireline intensity and distance from fire edge with fire growth modeling outputs from fire simulation software and burn probability models.FireLossRatehelps to quantify and produce spatially explicit data on structural exposure and loss for single and multiple fires. The package automates post hoc analyses on simulations that include single or multiple wildfires and enables result mapping when combined with other packages available in R. In this paper, we describe the functionality of theFireLossRatepackage and introduce users to the interpretation of impact indicators of wildfires at the WUI.FireLossRateis available for download athttps://github.com/LFCFireLab/FireLossRate.•FireLossRateallows the computation of wildfire impacts indicators on residential structures at the Wildland Urban Interface in support of community fire risk management.