You are required to carry your qualified business income (QBI) loss forward to next next year, but it would not serve as a deduction from your taxable income. The QBI is what you use to calculate your QBI deduction, which can be as much as 20% of your QBI income. So, you have to have qualified business income to generate a tax deduction. You do carry the QBI loss forward to next year, but it is only used to reduce your business income and therefor, your potential QBI deduction.
You can carry an unused passive loss from your rental property forward and that will benefit you by reducing your rental income in the next year. TurboTax will do that automatically for you. If you didn't use TurboTax in the previous year but have a rental loss carryforward, you will see an option to enter that amount when you work through the rental income and expenses section in TurboTax. But that is different from a QBI loss.
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