Example.Taxpayer A, a 64 year old male, files his return on a calendar year basis and has a life expectancy of 15.6 years on June 30, 1954, the annuity starting date of a contract to which § 1.72-2(b)(3) applies and which he purchased for $20,000. The contract provides for variable annual payments for his life. He receives a payment of $1,000 on June 30, 1955, but receives no other payment until June 30, 1957. He excludes the $1,000 payment from his gross income for the year 1955 since this amount is less than $1,324.50, the amount determined by dividing his investment in the contract ($20,000) by his life expectancy adjusted for annual payments, 15.1 (15.6−0.5), as of the original annuity starting date. Taxpayer A may elect, in his return for the taxable year 1957, to redetermine amounts to be received as an annuity under his contract as of June 30, 1956. For the purpose of determining the extent to which amounts received in 1957 or thereafter shall be considered amounts received as an annuity (to which a 100 percent exclusion ratio shall apply) he shall add $118.63 to the $1,324.50 originally determined to be receivable as an annuity under the contract, making a total of $1,443.13. This is determined by dividing the difference between what was excludable in 1955 and 1956, $2,649 (2 × $1,324.50) and what he actually received in those years ($1,000) by his life expectancy adjusted for annual payments, 13.9 (14.4−0.5), as of his age at his nearest birthday (66) on the first day of the first period for which he received an amount as an annuity in the taxable year of election (June 30, 1956). The result, $1,443.13, is excludable in that year and each year thereafter as an amount received as an annuity to which the 100% exclusion ratio applies. It will be noted that in this example the taxpayer received amounts less than the excludable amounts in two successive years and deferred making his election until the third year, and thus was able to accumulate the portion of the investment in the contract allocable to each taxable year to the extent he failed to receive such portion in both years. Assuming that he received $1,500 in the taxable year of his election, he would include $56.87 in his gross income and exclude $1,443.13 therefrom for that year.