Example: A nonresident taxpayer incurred a 1990 federal net operating loss of $150,000 which he carried back and applied as follows: 1987- $80,000; 1988-$60,000; 1989- $10,000. $120,000 of the loss was from Colorado sources. The amount of the federal loss he can claim for Colorado purposes in 1988 is limited to the loss applied to 1988 for federal purposes ($80,000) or that part of his federal loss sourced to Colorado ($120,000).
Assume the taxpayer uses $46,000 of the loss to zero out his 1987 Colorado income. The amount of the loss he can use for 1988 for Colorado income tax purposes is the smaller of the federal loss applied ($60,000) or the remaining Colorado-source loss ($74,000).
Assume the taxpayer uses $31,000 of the loss to zero out his 1988 Colorado income. The amount of the loss he can use for 1989 for Colorado income tax purposes is the smaller of the federal loss applied ($10,000) or the remaining Colorado-source loss ($43,000).
The taxpayer would source the entire $10,000 federal net operating loss applied to 1989 to Colorado. The balance of the Colorado-source loss ($33,000) would cease to exist.
39-22-504