What are the tax ramifications if a seller passes away while an active Section 453 installment sale note is still being collected?

Question

Tyler Smith · Accepted Answer

If a seller passes away while still holding an active Section 453 installment note, the deferred capital gains do not accelerate and become immediately taxable. Instead, the installment note, which represents a stream of future payments, becomes an asset of the seller's estate. The remaining unrecognized capital gain associated with the note is considered 'income in respect of a decedent' (IRD) under Section 691 of the Internal Revenue Code.

The inheritors of the installment note (beneficiaries of the estate) will continue to collect the payments according to the original schedule. They will report the capital gain component of each payment on their own income tax returns as they receive them. A key advantage for inheritors is that they generally receive a **deduction for the estate tax paid** on the portion of the note that constitutes IRD. This deduction helps to mitigate the double taxation that could otherwise occur—once at the estate level (for estate tax purposes) and again at the income tax level (when the inheritor reports the capital gain). Proper estate planning and clear communication with beneficiaries are essential to ensure the smooth transition and correct reporting of these deferred gains. The basis of the note is not 'stepped up' at death, meaning the inheritors inherit the decedent's original basis, and the deferred gain remains subject to income tax.