S1.415(a)-1(g)(4) grandfathers the benefits accrued as of the end of limitation year that is immediately prior to the effective date of the regs. So for a calendar year limitation year the benefit accrued @ 12/31/06 would be preserved.
An employee's monthly accrued benefit under the plan @ 12/31/06 is $8k (100% of 401(a)(17) Hi 3) and his S415 Hi 3 is $10k (which is less than the $Max).
PV of $8k using the plan assumptions is 1.3 million and PV of $10k (S415 Hi 3) using the S415 assumptions is 1.5 million. So he could have been paid 1.5 mil.
Absent the grandfather rule, under the new regs, the S415 Hi 3 benefit will now be $8k with a PV of $1.2 mil.
Assuming the employee's average comp remains unchanged in the future, under the grandfather rule, is the S415 maximum payout equal to:
PV of $8k using the plan assumptions or the PV of old Hi 3 of $10k using the plan assumptions?
