Thanks for joining the Community today, @daniel30,
If you're referring to filing previous taxes to the IRS, it must be done manually through the IRS website. QuickBooks Online currently supports recent quarter filing and doesn't allow late submission to tax agencies.
Once you fill out all necessary information on the form, mail it to the Internal Revenue Services. Contact their Support Line to get the mailing address and get additional instructions on the filing process.
Also, if you want to enter your data manually into our program, you may subscribe to a trial version. Check out this link for the list of products and payroll we handle: Compare QuickBooks Online plans.
If this requires additional help or you need clarification with the process, drop me a comment below. I'll be glad to get back and provide further help. Have a wonderful week!