What I did not mention today when I showed you the Excel spreadsheet with the estimate profit for my client who needs the last 6 years filed, you will charge more for older years. It requires you to access software from older years and you also will need to research tax laws for that earlier year as well. So, it is ok to charge more for having to do the extra research for prior years. An example of this would be during the pandemic when they mailed out stimulus checks.