How do you file state and federal taxes for sole proprietorship on quickbooks in CA?

Pleased to have you here, @scott-lee4444-gm.

To file the taxes for the past three years, you'll have to contact IRS for your federal taxes and the CA tax agency for the state taxes. They can guide and provide recommendations on how to file the forms.

However, if you have a tax advisor, I'd suggest consulting them. They might have specific instructions about the sole proprietorship filing.

Once done contacting them, you can manually file your data. To check and confirm the filing deadline of your state, I recommend visiting our Payroll Tax Compliance website.

Also, I'm adding these articles to determine some of the forms that you may be required to file for your federal taxes: 

• Sole Proprietorships
• Forms for Sole Proprietorship

Additionally, you can run these payroll reports to view useful information about your business and employees. This can also help you in filing your taxes:

• Run payroll reports
• View and print payroll reports

Please reach out to me if you have any other issues or concerns, and I'll get back to right away. I'm always here to help. Take care always!