Deductions & credits

Thanks for your reply

I checked the 2009 income tax and saw the unallowed losses from 2008 was used in 8582.

However when checking the 2015 income tax, there is no 8582 reported nor the unallowed losses from 2014 was used on Schedule E or anywhere else, any time after 2015 ... looks like the 2014 loss was forgotten or unabsorbed in 2015 income tax.

Since it was unused in 2015 or any time later on, can I now use it by manually adding the unallowed loss in 2014 with the unallowed loss in 2021 for calculating the taxable capital gain of the rental sale in 2022?

Instead of using a local professional CPA as suggested, would a "TurboTax online Consultant version" be able to help me claim that prior year while doing the income tax?

Thanks again