A detailed, in-depth checklist for starting your small business, specific to starting an LLC in Washington State. Based on my personal experience as a 3-time solopreneur, this checklist incudes some valuable information that can take your owner’s mindset to the next level. File is a comma separated value file. Open with LibreOffice, Google Sheets or Excel. Disclaimer: this is not tax nor legal advice. I am not a tax nor legal professional.