This sounds like a really terrible deferred comp plan.
Take the tax hit now and invest the money. Your gains will far outweigh the tax benefits of just deferring the pay.
Who said anything about losing gains? You define what funds it goes into just like a 401k and your comp appreciates along with the stock market and dividends. Maybe I needed to bold the + appreciation part.
Longer explanation:
Let's say someone makes 167,500. They can put 17,500 of that into their qualified 401k plan and get taxed as if they earned 150k. However, if they can take advantage of an NQDC plan and pull out another 50k (more if they wanted to but ALL eggs in one basket is a bit crazy). They do not pay income tax on that 50k for now.
The 17,500 and 50k both are invested into the stock market. You can see both in your dashboard at Fidelity. Let's say you retire 10 years later at 40 years old, your accounts might be at something like: 262k in your 401k, 750k in your NQDC, and 300k in other places. Now, you have your NQDC plan pay you back over 20 years (and it continues to appreciate during this time). When that money runs out, you are now 60 and can freely hit your 401k and Roth, other accounts, and potentially social security (if you want). Also, instead of paying 28% or 33% on that money you paid 15% since you spread out the compensation into retirement years and dropped into a lower income bracket. That's essentially an instant return of 13% or 18% while still getting all the appreciation you'd have gotten in a 401k.
There are 2 primary downsides as far as I can tell. 1) If you worked for Enron and it collapsed when you were looking to retire, if you didn't get the money out fast enough you'd have lost most or all of it. 2) If you want to rotate companies, it doesn't work as nicely since your employer will want payments to start immediately and that might be less than ideal.
I think the main target audiences who might consider this are:
1) Highly paid execs (the traditional target)
2) People who want to retire well ahead of the usual retirement age aka people on these forums
So in general, it seems definitely worth looking at but there doesn't seem to be much discussion of it here so was curious if people had experience with it.