
Section 6166 Estate Tax Deferral for Closely-Held Businesses: The 14-Year Installment Election in 2026
How executors of closely-held business estates use IRC Section 6166 to defer federal estate tax across 14 years at a 2% rate, with the 2026 inflation-adjusted $1.94M base, the 35% eligibility test, election mechanics, and the acceleration events that kill the deferral.










