In Turbotax 2025, as of February 11 2026, the CCA calculations in form TP-128 are incorrect in multiple places.
First, even though I have negative net income on the rental property, the TP128 still calculates a non-zero CCA which it uses to increase the loss. This is wrong. The available CCA in the case of a loss should be 0.
Second, columns 17, 20, 22 and 23 are incorrectly calculated.
For example, Col 17 should be C17 = 1/2 * C10 - C11 - C9 - C5. I have C10 = $251, C11 = C9 = C5 = $0. So the result should be approx $125, yet C17 shows $969.
It turns out that $969 is the amount shown on the same line of C17 of federal form T776. However, the values in form TP-128 should be the values that appear in T776 multiplied by the percentage ownership which in my case is approx. 13%...
As another example of error, all lines in C23 are zero despite there being much undepreciated property left.
Please make sure TP128 is tested. In particular, please have a test case where ownership is not 100%!
Thank you!
David
