Using ALT MACRS Methods
Alternative Modified Accelerated Cost Recovery System (ALT MACRS) methods use the alternative MACRS formula. You can assign one of these methods to any of an asset's related books. ALT MACRS methods usually apply to only Alternative Minimum Tax (AMT) and Adjustment Current Earnings (ACE) type books. Each method contains an automatic switch to straight line remaining life. LN uses the class life in each method as the life for the asset and book to which the method is assigned.