You are correct that you can deduct $3,000 a year of your Capital Loss Carryover.
Did you sell any Business Property for a Gain?
Since we can't see your return in this forum, I would suggest you look at your Schedule D, Capital Gains & Losses Worksheet to see how the calculations were done.
You can View/Download/Print to view this worksheet once you have paid your return.
Type 'carryover' and 'Jump to carryover' to review this section.
Click this link for more info on Capital Loss Carryover.
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