The IMBIE processor version 3.0 is the python code developed to parse, aggregate and combine the satellite-based ice sheet mass balance estimates included in the IMBIE assessment described in the Earth System Science Data preprint 'Mass Balance of the Greenland and Antarctic Ice Sheets from 1992 to 2020' (https://doi.org/10.5194/essd-2022-261). More information on the Ice Sheet Mass Balance Inter-Comparison Exercise (IMBIE) can be found on the dedicated project website: http://imbie.org/.