Optional Write-off for Certain Expenditures

There is no AMT adjustment for the following items if you elect for the regular tax to deduct them ratably over the period of time shown.

• Circulation expenditures—3 years (section 173).

• Research and experimental expenditures—10 years (section 174A(a)).

• Mining exploration and development costs—10 years (sections 616(a) and 617(a)).

• Intangible drilling costs—60 months (section 263(c)).

For information on making the election, see section 59(e) and Regulations section 1.59-1.