I have this same question. I had entered it as 50% rental usage and added 100% of the expenses and let the program do the math. I considered that I used my unit as a personal residence for the first 4 months (33.3% of the year) so I thought I'd change the rental usage percentage from 50% to 83.3%. I reached this number by considering I used 1 unit 100% as a rental for the year and the other unit was used as a rental for 66.67%. (50% plus 66% of the other 50% = 83.33%)
