Rates are set by fiscal year, effective October 1 each year. Find current rates in the continental United States ("CONUS Rates").
Section 1244 of the Internal Revenue Code is the small business stock provision enacted to allow shareholders of domestic small business corporations to deduct a loss on the disposal of such stock as an ordinary loss rather than as a capital loss, which is limited to only $3,000 annually.
Normally, stock is treated as a capital asset, and if disposed of at a loss, the loss is deducted as a capital loss.
The general rule for net capital losses (losses that exceed gains in any tax year) is that they are subject to an annual deduction limit of only $3,000. Any excess loss over $3,000 must be carried forward to a future year (individuals may not carry back a capital loss to prior years).
On the other hand, a loss on Section 1244 stock is not subject to the annual $3,000 deduction limit. A loss on Section 1244 stock is deductible up to $50,000 ($100,000 on a joint return, even if only one spouse has a Section 1244 loss).
Claim a loss on section 1244 stock on Form 4797, and not Schedule D.