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Product Category - Windows & Doors
Product Type - Exterior Windows and Skylights
Federal Tax Credit Specification
Montana Tax Credit Specification
Before June 1, 2009:
  Must meet ENERGY STAR criteria
 
After June 1, 2009:
  U factor <= 0.30
  SHGC <= 0.30

For investments in products installed prior to July 1, 2010

Replacement
    higher energy rating than window or skylight being replaced
New construction
       exterior windows – U factor <= 0.35
       all ENERGY STAR labeled qualify
       skylights – U factor <= 0.60
       all ENERGY STAR labeled qualify

For investments in products installed on or after July 1, 2010

U factor <= 0.30
SHGC  <= 0.30
Federal Tax Credit
Montana Tax Credit
30% of cost, up to $1,500*
25% of cost, up to $500**
Federal Notes
Montana Notes
Not all ENERGY STAR labeled windows and skylights qualify for tax credit.
Unlike the federal credit, the Montana credit:
  • is allowed for installation in dwellings, not only the taxpayer’s principal residence
  • includes installation costs
*     Subject to a $1,500 maximum per homeowner for all improvements combined.
**     Subject to a $500 annual maximum per taxpayer per building for all improvements combined.