2023 Washington Code 82.32.530 – Seller nexus

2022 Washington Code 82.32.530 – Seller nexus

2020 Washington Code 82.32.530 – Seller nexus

2019 Washington Code 82.32.530

2018 Washington Code 82.32.530 – Seller nexus

2016 Washington Code 82.32.530 – Seller nexus

2015 Washington Code 82.32.530 – Seller nexus

2014 Washington Code 82.32.530 – Seller nexus

2013 Washington Code 82.32.530 – Seller nexus

2009 Washington Code 82.32.530 – Seller nexus