Delaware LLC final-year tax return: special procedures and timing

When the final year ends

Final year is the partial-year period from start of tax year through the date Delaware Certificate of Cancellation is effective. For most calendar-year filers, final year is January 1 through the cancellation date.

Filing deadline: same as regular year (April 15 / October 15 with extension).

Marking the return as final

On Form 1120, mark the 'Final return' checkbox. On Form 5472, indicate that this is the last filing year. Include explanatory statement: LLC voluntarily dissolved on [date]; final return covers period [start] through [end].

Failure to mark as final triggers IRS to expect the next year's filing, potentially leading to non-filing penalties.

Other final-year tasks

Final BOI status: no update required after dissolution; original BOI report remains on file. Bank account closure: timing should align with or follow final return. Distribution to owner: typically tax-free for non-resident foreign owner (disregarded entity).