If your business entity is a S Corporation, C Corporation or a Partnership you will have to use the TurboTax Business Edition for tax year 2021. The Business Edition can only be installed on a Windows based personal computer, not online or on a Mac.
Go to this TurboTax website for the 2021 Business Edition - https://turbotax.intuit.com/personal-taxes/past-years-products/
However, if your business is a single member LLC that has NOT incorporated then your business is a disregared entity and you file a Schedule C. The Schedule C is included with and part of your personal tax return, Form 1040. If you did not include a Schedule C with the 2021 tax return you filed then you will have to amend the 2021 tax return to include the Schedule C where you report your income and expneses for self-employment.
See this TurboTax support FAQ for amending a 2021 tax return originally completed and fled using TurboTax - https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-return/amend-2021-return/L1gEU4G3X_U...
