Step 1 of 7 · Who owes the tax
Form 5330 — Section B: Minimum funding and funding-improvement taxes
An accumulated funding deficiency, a liquidity shortfall, failure to meet an endangered- or critical-status benchmark, and failure to adopt a rehabilitation or funding restoration plan.
This return reports Section B taxes only.
A Form 5330 may report the taxes of one section. If you also owe an excise tax from another section, it has its own due date and needs its own Form 5330 — start a second one from the section list.
Due: The 15th day of the 10th month after the last day of the plan year.
Who owes the tax
Form 5330 is filed by whoever is liable for the excise tax. That is not automatically the plan, its sponsor, the account's custodian, the plan administrator, or the person filling this in — and whoever signs is asked for separately, later.