Should You Make Pre-tax or Roth 401(k) Contributions?

When you become eligible to participate in your employer’s 401(k), 403(b), or 457 plan, you will have to decide what type of contributions that you want to make to the plan.  Most employer sponsored retirement plans now offer employees the option to make either Pre-tax or Roth contributions.   A number of factors come into play when deciding what source is the right one for you including:

• Age

• Income level

• Marital status

• Income need in retirement

• Withdrawal plan in retirement

• Abnormal income years

You have to consider all of these factors before making the decision to contribute either pre-tax or Roth to your retirement plan.

Pre-tax vs Roth Contributions

 First, let’s start off by identifying the differences between pre-tax and Roth contributions.  It’s pretty simple and straight forward.  With pre-tax contributions, the strategy is “don’t tax me on it now, tax me on it later”.  The contributions are deducted from your gross pay, they deduct FICA tax, but they do not withhold federal or state tax which in doing so, you are essentially lowering the amount of your income that is subject to federal and state income tax in that calendar year. The full amount is deposited into your 401K, the balance accumulates tax deferred, and then when you retire, and pull money out, that is when you pay tax on it.  The tax strategy here is taking income off the table when you are working and in a higher tax bracket, and then paying tax on that money after you are retired, your paychecks have stopped, and you are hopefully in a lower tax bracket.

With Roth contributions, the strategy is “pay tax on it now, don’t pay tax on it later”.  When your contributions are deducted from your pay, they withhold FICA, as well as Federal and State income tax, but when you withdraw the money in retirement, you don’t have to pay tax on any of it INCLUDING all of the earnings.

Age

 Your age and your time horizon to retirement are a big factor to consider when trying to decide between pre-tax or Roth contributions.  In general, the younger you are and the longer your time horizon to retirement, the more it tends to favor Roth contributions because you have more years to build the earning in the account which will eventually be withdrawn tax-free.  In contrast, if you’re within 10 years to retirement, you have a relatively short period of time before withdrawals will begin from the account, making pre-tax contributions may make the most sense.

When you end up in one of those mid time horizon ranges like 10 to 20 years to retirement, the other factors that we’re going to discuss have a greater weight in arriving at your decision to do pre-tax or Roth.

Income level

 Your level of income also has a big impact on whether pre-tax or Roth makes sense.  In general, the higher your level of income, the more it tends to favor pre-tax contributions. In contrast, lower to medium levels of income, can favor Roth contributions. Remember pre-tax is “don’t tax me on it now, tax me on it later”, and the strategy is you are assuming that you are in a higher tax bracket now during your earning years then you will be in retirement when you don’t have a paycheck. By contrast, a 22 year old, that has accepted their first job, will most likely be at the lowest level of income over their working career, and have the expectation that their earnings will grow overtime.  This situation would favor making Roth contributions because you are paying tax on the contributions while you are still in a low tax bracket and then later on when your income rises, you can switch over to pre-tax.  

Marital status

 Your marital status matters because if you’re married and you file a joint tax return, you have to consider not just your income but your spouse’s income. If you make $30,000 a year, that might lead you to think that Roth is a good option, but if your spouse makes $200,000 a year, your combined income on your joint tax return is $230,000 which puts you in a higher tax bracket.  Assuming you’re not going to need $230,000 per year to live off of in retirement, pre-tax contributions may be more appropriate because you want the tax deduction now.

A change in your marital status can also influence the type of contributions that you’re making to the plan. If you are a single filer making $50,000 a year, you may have been making Roth contributions but then you get married and your spouse makes $100,000 a year, since your income will now be combined for tax filing purposes, it may make sense for you to change your elections to pre-tax contributions.

These changes can also take place when one spouse retires and the other is still working. Prior to the one spouse retiring, both were earning income, and both were making pre-tax contributions. Once one of the spouses retires the income level drops, the spouse that is still working may want to switch to Roth contributions given their much lower tax rate.

Withdrawal plan in retirement

 You also have to look ahead to your retirement years and estimate what your income picture might look like.  If you anticipate that you will need the same level in retirement that you have now, even though you might have a shorter time horizon to retirement, it may favor making Roth contributions because your tax rate is not anticipated to drop in the retirement years. So why not pay tax on the contributions now and then receive the earnings on the account tax-free, as opposed to making pre-tax contributions and having to pay tax on all of it.  The benefit associated with pre-tax contributions assumes that you’re in a higher tax rate now and when you withdraw the money you will be in a lower tax bracket.

Some individuals accumulate balances in their 401(k) accounts but they also have pensions.  As they get closer to retirement, they realize between their pension and Social Security, they will not need to make withdrawals from their 401(k) account to supplement their income.  In many of those cases, we can assume a much longer time horizon for those accounts which may begin to favor Roth contributions. Also, if those accounts are going to continue to accumulate and eventually be inherited by their children, from a tax standpoint, it’s more beneficial for children to inherit a Roth account versus a pre-tax retirement account because they have to pay tax on all of the money in a pre-tax retirement account as some point.

Abnormal income years

 It’s not uncommon during your working years to have some abnormal income years where your income ends up being either significantly higher or significantly lower than it normally is.  In these abnormal years it often makes sense to change your pre-tax or Roth approach. If you are a business owner, you typically make $300,000 per year, but the business has a bad year, and you’re only going to make $50,000 this year, instead of making your usual pre-tax contributions, it may make sense to contribute Roth that year.  If you are a W-2 employee, and the company that you work for is having a really good year, and you expect to receive a big bonus at the end of the year, if you’re contributing Roth it may make sense to switch to pre-tax anticipating that your income will be much higher for the tax year.

Another exception can happen in the year that you retire.  Some companies will issue bonuses or paid out built up sick time or vacation time which can count as taxable income. In those years it may make sense to make larger pre-tax contributions because the income in that final year may be much higher than normal.

 

Frequently Asked Questions About Roth Contributions

 When we are educating 401K plan participants on this topic, there are a few frequently asked questions that we receive:

Do all retirement plans allow Roth contributions?

ANSWER:  No, Roth contributions are a voluntary contribution source that a company has to elect to offer to its employees.  We are seeing a lot more plans that offer this benefit but not all plans do.

Can you contribute both Pre-Tax and Roth at the same time to the plan?

ANSWER:  Yes, if your plan allows Roth contributions you are normally able to contribute both pre-tax and Roth to the plan simultaneously.  However, the annual deferral limits are aggregated for purposes of all employee elective deferrals. For example, in 2021, the maximum employee deferral limits are as follows:

• Under the age of 50:  $19,500

• Age 50+: $26,000

You can contribute all pre-tax, all Roth, or any combination of the two but those amounts are aggregated together for purposes of assessing the annual dollar limits.

Do you have to set up a separate account for your Roth contributions to the 401K?

ANSWER: No. The Roth contributions that you make out of your paycheck to the plan are just tracked as a separate source within the 401K plan. They have to do this because when it comes to withdrawing the money, they have to know how much of your account balance is pre-tax and what amount is Roth.  Typically, on your statements, you will see your total balance, and then it breaks it down by money type within your account.

What happens when I retire and I have Roth money in my 401K account?

ANSWER:  For those that contribute Roth to their accounts, it's common for them to have both pre-tax and Roth money in their account when they retire.  The pre-tax money could be from employee deferrals that you made or from the employer contributions.  When you retire, you can set up both a rollover IRA and a Roth IRA to receive the rollover balance from each source.

SPECIAL NOTE:  The Roth source has a special 5 year holding rule.  To be able to withdraw the earnings from the Roth source tax free, you have to be over the age of 59 ½ AND the Roth source has to have been in existence for at least 5 years.  Here is the problem, that five-year holding clock does not transfer over from a Roth 401(k) to a Roth IRA.  If you did not have a Roth IRA a prior to the rollover, you would have to re satisfy the five-year holding period within the Roth IRA before making withdraws.  We normally advise clients in this situation that they should set up a Roth IRA with $1 five years prior to retirement to start that five-year clock within the Roth IRA so by the time they rollover the Roth 401(k) balance they are free and clear of the 5 year holding period requirement. (Assuming their income allows them to make a Roth IRA contribution during that $1 year)

About Michael……...

Hi, I’m Michael Ruger. I’m the managing partner of Greenbush Financial Group and the creator of the nationally recognized Money Smart Board blog . I created the blog because there are a lot of events in life that require important financial decisions. The goal is to help our readers avoid big financial missteps, discover financial solutions that they were not aware of, and to optimize their financial future.

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