Versions of Montana Code 31-1-501. Late payment charges -- accounts receivable for merchandise sold at retail on LawServer 2023 Montana Code 31-1-501. Late payment charges — accounts receivable for merchandise sold at retail 2022 Montana Code 31-1-501. Late payment charges — accounts receivable for merchandise sold at retail 2021 Montana Code 31-1-501. Late payment charges — accounts receivable for merchandise sold at retail 2019 Montana Code 31-1-501. Late payment charges — accounts receivable for merchandise sold at retail 2018 Montana Code 31-1-501. Late payment charges — accounts receivable for merchandise sold at retail 2016 Montana Code 31-1-501. Late payment charges — accounts receivable for merchandise sold at retail 2014 Montana Code 31-1-501. Late payment charges — accounts receivable for merchandise sold at retail 2013 Montana Code 31-1-501. Late payment charges — accounts receivable for merchandise sold at retail 2009 Montana Code 31-1-501 – Late payment charges — accounts receivable for merchandise sold at retail