Form 1045: Application For Tentative Refund

A tax form distributed by the Internal Revenue Service (IRS) and used by individuals, estates and trusts to apply for a tax refund. Form 1045 is used to request a refund resulting from either a carryback of a net operating loss (NOL), unused business tax credit or net section 1256 loss, or from a tax overpayment. Instructions for Form 1045 indicate what qualifies as a loss.

Tax payers should be careful when carrying back net operating loss (NOL) to a previous tax year because it may create an alternative minimum tax (AMT) obligation. This can be created even if there was no AMT owed in the previous period.