We are structuring our exit as an installment sale under Section 453 to defer our capital gains taxes over five years, but we are worried about the IRS interest charge on deferred tax liabilities and the risk of buyer default. How do we structure the transaction terms to stay under the Section 453 thresholds while securing the note against specific operational assets?

Question

Tyler Smith · Accepted Answer

An installment sale under Section 453 of the Internal Revenue Code is an excellent tool for deferring tax liability, but it comes with structural traps. If the face amount of your installment obligations exceeds five million dollars at the end of the tax year, the IRS imposes an annual interest charge on the deferred tax liability. To protect your proceeds, you must manage both this tax threshold and the credit risk of the buyer.

If your transaction size puts you near the threshold, consider structuring the sale over multiple calendar years or dividing the transaction among multiple shareholders. Each individual shareholder has their own five million dollar threshold, which can effectively double or triple your tax-deferred limit if your corporate structure allows it.

To mitigate the risk of buyer default, never accept an unsecured installment note. You must secure the note with a first-priority security interest in the specific operational assets of the business, including proprietary software, client contracts, and intellectual property. This must be backed by a personal guarantee from the buyer or a letter of credit from an established bank.

Additionally, build operational covenants into the note that mirror your weekly Scorecard metrics. If the buyer's debt service coverage ratio drops below a certain level, or if key customer retention falls, it should trigger an immediate acceleration of the note or grant you the right to reclaim operational control of the assets. This ensures you are not left holding an unpaid note with no recourse.