New guidance enables U.S. cities and counties to include forests and trees within their greenhouse gas (GHG) emissions accounting, a key activity to ensure representation of local forestry and land use consideration in climate action planning. Developed in partnership with the Woods Hole Research Center and World Resources Institute (WRI), and funded by Climate and Land Use Alliance (CLUA) and Doris Duke Charitable Foundation, the Forest and Land Use Appendix to ICLEI’s U.S. Community Protocol for Accounting and Reporting of Greenhouse Gas Emissions will help fill a critical gap in enabling communities to develop climate action related to land management at a local level.