A missed payment, a death or a wind up brings the rest due at once
What the document says“If there is an addition to tax for failure to timely pay any installment required under this section, then the unpaid portion of all remaining installments shall be due on the date of such failure.”
The section brings the rest of the installments due on the day of a failure to pay one on time. For an individual, the rest falls due on the return date for the year of death. For a C corporation, trust or estate, the rest falls due on a liquidation or sale of substantially all assets, a cessation of business, or a similar event, or the day before a bankruptcy petition, unless the buyer of those assets agrees with the Secretary to take on the remaining installments. A deficiency assessed on the liability is spread across the installments, with the part on installments not yet due collected with them, unless the deficiency is due to negligence, intentional disregard or fraud.
What the document actually says“If there is an addition to tax for failure to timely pay any installment required under this section, then the unpaid portion of all remaining installments shall be due on the date of such failure.”
Missing one part brings all the rest due. They fall due on the day of the failure.
Death does the same for an individual. Winding up does the same for a firm. A buyer of the assets may take the payments over instead.
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