Energy Tax Credits

[lhe]

I have a question on the "lifetime" max for the energy tax credits.  Is that per house or is that based on my lifetime.  If it is my lifetime I may have work to do as it was 10-15 years back when I had energy efficient windows installed (they were good for the time) I may not even have that paperwork. 

Also TT is asking for the cost of the product not including the cost including the install.  Unfortunately, that pushes me back to my installer to ask them for n itemized bill for a cost break down. (I did a lot this year, windows, doors, and insulation). Is that necessary only to not cut in on your lifetime maximum for the credit?

[AnnetteB6]

The lifetime credit limit is based on tax returns filed by you from tax year 2006 to the present.  So the lifetime is your lifetime, not the lifetime of different homes you may have owned over the years.

Some of the 'energy' credits, such as the one for solar electric property, will allow the cost of installation to be considered for the calculation of the credit.  The credit for making energy-saving improvements to your doors and windows does not allow you to include the installation cost.  So, you may need to get that itemized bill to break it down.