" Is Turbo Tax Live available if I am using Turbo Tax Business?"
No. TurboTax Live is available for TurboTax Online customers only. TurboTax Live is not available in any version of TurboTax CD/Download software, which includes TurboTax Business.
EDIT 12/21/2022: See https://turbotax.intuit.com/personal-taxes/online/live/full-service/business-taxes
