Actually according to the IRS, "
The Bipartisan Budget Act (the Act), P.L. 115-123, enacted February 9, 2018, extended the date for many benefits in the tax law (extenders) and added a few new ones," so you may be able to. The instructions for IRS Form 5695 allow for a
Residential Energy Efficient Property
Credit for "
Any insulation material or system that is specifically and
primarily designed to reduce heat loss or gain of a home when
installed in or on such a home," which would include window tints. But only the cost of the tinting material could be used, not the installation.
