Derrin Watson, who hosts the Who's The Employer? column here, was kind enough to give me permission to quote one of his recent messages that he posted on the Pension Information eXchange (wording slightly changed as to tense):
Perhaps it would help to understand how it is that California, as an example, uses the IRC. California's Revenue & Taxation Code has many sections which directly refer to the Internal Revenue Code. One of those is section 17501 which states:
QUOTE
17501. Subchapter D of Chapter 1 of Subtitle A of the Internal Revenue Code, relating to deferred compensation, shall apply, except as otherwise provided.
In other words, rather than having its own retirement plan provisions, the California tax law simply incorporates the IRC by reference. That takes in sections 401-424. But there's a catch:
QUOTE
17024.5. (a) (1) Unless otherwise specifically provided, the terms "Internal Revenue Code," "Internal Revenue Code of 1954," or "Internal Revenue Code of 1986," for purposes of this part, mean Title 26 of the United States Code, including all amendments thereto as enacted on the specified date for the applicable taxable year as follows:
[......long list of effective dates removed. Here's the last in the list]
(L) For taxable years beginning on or after January 1, 1998 .......................... January 1, 1998
In other words, right now California law has incorporated the IRC as it stood 1/1/98. It isn't a matter of choosing to bring in catchups or 25% deductions or not. Right now, EGTRRA has absolutely zero affect on how qualified plans, their sponsors, and their participants are taxed by the state of California. That will remain true unless and until the California legislature acts. They may choose to bring in all or part of EGTRRA. It is likely that they will add a new subsection (M) saying that for taxable years after 2001, the IRC as of 1/1/02 applies. However, they may (probably will) go through and carve out various exceptions.
Where do things stand now in the absence of state action? Well, as was pointed out, a profit sharing plan is limited to a 15% deduction in California, but that's probably the least of our worries.
If you make a catchup contribution, it's just a normal elective deferral as far as California is concerned. It counts for 402(g); it counts for 415; it counts for ADP. Moreover, since 401(a)(30) requires a plan to limit contributions to 402(g), and since 415 requires plans to limit annual additions to 415©, a plan which provides for catchup contributions in accordance with the federal standard is not a qualified plan for California tax purposes. That means the trust is taxable on its earnings, and either the sponsor looses its deduction for contributions or the participants are taxable on their vested accounts.
The same is true of a plan which provides for the $40,000/100% 415© limit. The same is true of a plan which provides for the $160,000 415(B) limit. It doesn't matter whether it provides for the higher limits by adopting an amendment, or whether it incoporated the limits by reference.
Now, of course, this would be a disqualifying provision, and a normal remedial amendment period would apply. Hopefully, the state legislature will get its act together in time to avoid calamity, but that's where we stand right now.