S6166_Paragraph
(a) - Section 6166(a) - 5-Year Deferral; 10-Year Installment Payment (The Regular 14-Year Election)
§6166(a) Example 1
A Simple 6166(a) Election Without Any Adjustments
May-31-2014 Date of death
50,000,000.00 Gross estate
10,500,000.00 Less: Total allowable section 2053 and section 2054 deductions
39,500,000.00 Section 6166(b)(6) adjusted gross estate
 
Feb-28-2015 Estate tax return due date and return filing date
39,500,000.00 Taxable estate (may or may not be the same as the adjusted gross estate)
13,664,000.00 Net estate tax
 
20,000,000.00Estate tax value of closely held business, divided by
39,500,000.00Section 6166(b)(6) adjusted gross estate, yields
50.6329%§6166(a)(2) ratio, rounded to 6 decimal places
 
13,664,000.00Net estate tax, times
50.6329%§6166(a)(2) ratio, rounded to 6 decimal places, yields
6,918,479.46Maximum amount of tax which may be paid in installments under §6166(a)
10Number of installments elected by the estate
691,847.95Annual installment
6,745,520.54Tax not deferred under §6166 and paid with the return when filed
 
6,918,479.46Maximum amount of tax which may be paid in installments under §6166(a)(1)
580,000.00Portion of tax deferred at 2% interest rate
6,338,479.46Portion of tax deferred at 45% of regular underpayment interest rates (45% of R%)
 
0.083833§6601(j)(4) ratio of payments allocable to the 2% portion of deferred tax
0.916167§6601(j)(4) ratio of payments allocable to the 45% of R% portion of deferred tax
1.000000Total of allocation ratios

Comment

The estate tax return was filed on the return due date. Estate tax of $6,745,520.54 was not deferred under section 6166 and was paid when the return was filed. The estate elected to pay the balance of tax, which was equal to the maximum amount of tax eligible for deferral, in 10 equal installments with the first installment due on the 5th anniversary date of Feb-28-2020. Interest only will be payable on the anniversary dates in 2016, 2017, 2018, and 2019. The first annual installment of $691,847.95 of  tax, plus interest from Feb-28-2019, will be payable on Feb-28-2020. This will remain true for the next 9 installments, the last of which will be due on Feb-28-2029. The effective deferral period is 14 years, calculated from the return due date of Feb-28-2015 through the tenth and final installment due date of Feb-28-2029.

NOTE: The interest rates and 6601(j)(4) allocation ratios applicable for a section 6166(a) election are also applicable to an election made under section 6166(b)(10), the only differences being that in a (b)(10) election the first installment is due on the return due date, determined without regard to any extensions, and the maximum number of installments is 5, for an effective deferral period of 4 years; 20% of the deferred tax would be payable on each of the 5 installment due dates.