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IRA vs 401k Central

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Traditional vs Roth 401k – Which One Is Better?

September 30, 2016 by Justin 7 Comments

traditional vs Roth 401kEven though they may appear similar, the amount of money you can effectively contribute to a traditional vs Roth 401k can be quite different.  The IRS states that you are allowed to contribute up to $17,500 to one account or the other each year.  But when you take a closer look and consider how taxes influence those contributions, you’ll discover that there are benefits in using the Roth over the traditional.

As you probably know, the major difference between a Roth vs traditional 401k is this:

  • You pay taxes later with a traditional 401k
  • You pay taxes now with a Roth 401k

So if we assume that you’ll be in the same tax bracket later as your are now, then there doesn’t really seem to be a lot of difference on the surface.  But let’s illustrate how you can actually save more with the Roth 401k.

 

Traditional vs Roth 401k Savings Example:

For simplicity, let’s assume we have two employees: A and B.

  • Employee A has a traditional 401k
  • Employee B has a Roth 401k

Both want to contribute the full $17,500 limit to their 401k plans and both are in a 25% tax bracket.

So how will Employee B end up contributing more to his 401k plan than employee A?

So we start by saying that after taxes right now each person contributes the full IRS amount:

  • Employee A, Traditional 401k – Now (after taxes): $17,500
  • Employee B , Roth 401k – Now (after taxes): $17,500

So when will I pay taxes on the Traditional 401k?  If we look to the future when we finally retire, that’s when we’ll pay taxes on the traditional.  In the future we won’t pay any taxes on our Roth 401k.

  • Employee A, Traditional 401k – Later (after taxes): $17,500 x (1 – 25%) = $13,125
  • Employee B , Roth 401k – Later (after taxes): $17,500

But wait: We still have to pay taxes some time on our Roth 401k.  So let’s go back to “now” and look at what happens when we actually contribute money into our accounts.

Before the money goes into our Roth 401k, it gets taxed.  But in the traditional 401k case, no taxes are taken out.

  •  Employee A, Traditional 401k – Now (before taxes): $17,500 = $17,500
  • Employee B , Roth 401k – Now (before taxes): $17,500 / (1 – 25%) = $23,333

Therefore, you are effective contributing more to your Roth 401k than you would with the Traditional 401k.  That means that when you finally retire, there is a much greater potential to have more money and more wealth accumulation in your account.

Here is brief summary of the results:

Traditional vs Roth 401k

The Importance of Attention to Detail:

This lesson doesn’t just apply to your 401k.  The same thing could be said for your traditional vs Roth IRA.  There are many things about your retirement accounts that appear similar on the surface.  But as you take a closer look and run the numbers, you’ll find that these kinds of differences exist.  This is very important to maximizing your wealth opportunity.  As we work and save year after year, we want to put ourselves in the best possible position to make as much money as possible for retirement.

 

Image courtesy of FreeDigitalPhotos.net

Related posts:

  1. Will 401k or IRA Contributions Make One Million Dollars First?
  2. Comparing a Pension vs 401k – What Are the Differences?
  3. The 401k vs IRA – A Battle of the Best Retirement Plans
  4. 401k Advantages and Disadvantages – The Most Important Things You Need to Know

Filed Under: Which Is Better Tagged With: roth 401k, traditional 401k, traditional vs roth 401k

Comments

  1. Robt says

    May 17, 2013 at 1:52 am

    Your blog clearly distinguishes the two and I got to know details of both. Will need to check with my financial consultant though which one is the most appropriate for me.

    Reply
  2. Holly@ClubThrifty says

    May 28, 2013 at 3:22 pm

    My work offered a Roth 401k but we never took advantage of it. We just do the traditional 401k coupled with a Roth IRA.

    Reply
  3. jim says

    May 31, 2013 at 1:09 am

    Dear MMD,
    I am absolutely and totally confused now. Can you help me out? Spouse and I are going to retire in 10 years. We’ve got $700,000 in traditional IRA’s with our employers. I had just convinced myself that we need to roll those over to Roth IRA’s, but then I read a bunch of stuff that says not to do it. I don’t know what we should do. If we’re in a 28% tax bracket, how much would it cost us to roll that $700,000 to Roth IRA’s? And really, at our age, is it even beneficial for us to do that? Thanks.

    Reply
  4. jeffie says

    October 9, 2015 at 12:07 pm

    Hi, I am disable, I had incorporate an LLC but haven’t make a single cent in my LLC, yet. Is there any way to contribute to the Self-Directed (solo) 401K without jeopardy my govement subsidize monthly income? If you have a way, please tell me step by step, and how much this year 2015 I can contribute, is it 401k tradition or Roth 401k and when is the deadline for contribution. Please reply to my email with headline: “Disable contribution to 401k without Gov income cut-off”. Thanks so very much.

    Reply
  5. Joseph Herbst says

    May 9, 2017 at 6:55 pm

    This model is actually highly flawed and not detailed enough. I will explain the correct comparison. Employee A invests the max $17,500 in an traditional and Employee B the $17,500 in a Roth. They invest in the same exact investment. The future value, or FV of the Roth investment is the total balance of the account, the FV of the traditional is reduced by 25% due to taxes owed. HOWEVER, when investing the $17,500 in the traditional, Employee A will reduce his tax bill and increase his take home pay by $4,375 (25% of $17,500). For a proper comparison this money should also be invested in the same investment in a non-retirement account. So at retirement, Employee B has 100% of the retirement account, vs Employee A who has 75% of the retirement account, plus the other investment minus taxes owed on it. If your tax rate in retirement is less than 23/22% or so, the Traditional + other account will leave you with more money.

    Reply

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