I use my primary home for business (30% use). I'm using TurboTax for Home and Business. I had thought that the energy tax credit would be calculated as Total cost $6000 of biomass stove by 70% residential portion of home, multiplied by 30% of the cost. So $6000*.7*.3 = $1260. Turbotax is not taking into account the partial use of the home for business, and giving me a higher than expected tax credit. In the IRS instructions for Form 5695, and in Form 5695 and in the Energy Efficient Home Improvement Credit Limit worksheet, I don't see anywhere to enter the percentage of the home used for business vs. residential. Am I wrong in the calculation?
Thanks