PRE-TAX vs. ROTH: Which is
Better?
The July 2007 edition of the Future $umTimes
announced that a Roth 403(b) savings alternative would become
available through the AHRP beginning January 1, 2008. An obvious
question: “How can I determine whether a Traditional 403(b) Plan or a
Roth 403(b) Plan is the better alternative for my retirement savings?”
This question is impossible to answer with certainty, but by
understanding the nature of these alternatives, some assumptions can
be made.
The primary difference between a Traditional 403(b) Plan and a Roth
403(b) plan is the timing of federal and state income tax payments
on these savings as illustrated in the table below.
| |
CONTRIBUTIONS |
DISTRIBUTIONS |
TRADITIONAL
403(b) PLAN |
Pre-tax (not subject to federal or
state income tax withholding) |
Principal and related earnings taxed
at ordinary income tax rates in the
year of distribution |
ROTH 403(b)
PLAN |
After-tax (subject to federal and
state income tax at the time of contribution) |
Qualified Distributions of principal
and related earnings are free of
Income tax |
The objective of utilizing a Traditional 403(b) plan
is to reduce taxable income in the year the contribution is made
thereby deferring income tax on these contributions and their related
earnings until retirement when income and corresponding income taxes
may be lower.
The objective of utilizing a Roth 403(b) plan is to pay income
tax on retirement savings at the current income tax rates thereby
avoiding tax liability on these contributions and related earnings
upon distribution in the future when income tax rates may be higher.
|
Who will likely benefit from Roth savings? |
Who will likely benefit from pre-tax savings? |
- Participants paying low marginal
income tax rates
|
- Participants paying high marginal
income tax rates
|
- Participants who are “very” well
prepared for retirement
|
- Participants who aren’t particularly well
prepared for retirement
|
- Participants looking for tax
diversification
|
- Participants with temporarily high
incomes
|
Whether pre-tax or Roth contributions ultimately
offer a better result depends on the relationship between current tax
rates and tax rates in retirement. Higher tax rates in retirement
favor Roth; lower tax rates in retirement favor pre-tax. If a
participant expects to be in the same tax bracket in retirement, the
alternatives are theoretically equivalent. However, he/she may prefer
Roth savings as a hedge against a possible tax rate increase in
retirement (since the tax code is not etched in stone). What is
fundamentally unknown until retirement is whether choosing a pre-tax
or Roth contribution during one’s working years is the more
financially advantageous strategy.
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