How the New Tax Law Affects Retirement Savings Strategies

Community Manager
Community Manager
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shutterstock_576678016, 2.jpgIn early drafts of the recently enacted tax reform bill, there was a lot of talk about potential changes to retirement contributions. But little actually changed when all was said and done. Proposals to eliminate the deductibility of contributions to retirement plans and to lower the cap on retirement plan savings never made it through in the final bill.


Retirement plan contribution limits

We still have the same retirement plan tools and techniques at our disposal. Salary deferral contribution limits to retirement plans in 2018 are as follow:

  • TSP, 401(k), 403(b), 457, and SARSEP – Lesser of $18,500 or 100% of participant’s compensation, with an extra $6,000 allowed as a catch-up for contributors ages 50 or over
  • Traditional and Roth IRAs – Lesser of $5,500 or 100% of earned income, with a catch-up limit of $1,000 for ages 50+
  • Simple IRA – Lesser of $12,500 or 100% of participant’s compensation, plus a catch-up limit of $3,000 for ages 50+
  • SEP IRA – Lesser of $55,000 or 25% of participant’s compensation

New opportunities

There are no real changes to the types of retirement accounts. However, most Americans now have a lower tax rate. If you find yourself with more money in your pocket as a result of the TCJA, consider taking advantage of retirement savings opportunities:


Act now. The new lower rates are set to expire after 2025.


Consider saving money in a Roth account, if eligible. Since deductions may not be as valuable under the new tax rates, it’s a good time to reevaluate your mix of retirement vehicles. Roth contributions aren’t subject to an immediate tax deduction, but qualified distributions from Roth accounts won’t be taxed later.


Roth vs Traditional

As an example, let’s look at Jack and Jill, who are twins. Both are single; both make $40,000 per year; both save $4,000 per year into a retirement account; both take the standard deduction on their tax returns; both will retire in 30 years; both will earn a constant 6% return on their retirement savings; and both will be in the 15% tax bracket at retirement.

The only financial difference between the twins is that Jack prefers to get his tax deduction now by saving into a traditional IRA, and Jill prefers a tax-free distribution later by saving into a Roth IRA.


  • More money in their pockets – Despite their preference for retirement savings vehicles, both Jack and Jill could see their taxes go down in 2018 by about $1,600 compared to last year — a great opportunity to save!
  • In the end, Jill’s Roth is worth more – Under the old pre-2017 tax rates, and using our assumptions, there is no difference between the traditional IRA and the Roth IRA strategies 30 years from now, on an after-tax basis. However, under the new tax law, Jill’s Roth IRA strategy outperforms Jack’s Traditional IRA strategy. That’s because the new lower tax rates don’t offer as much benefit to the Traditional (deductible) IRA used by Jack.

USAA is here to help by providing additional information and guidance on your specific financial needs and goals as we evaluate the impact of the tax bill in 2018 and beyond. We’re committed to helping you make smart financial decisions all along the way.


Visit USAA’s Free Calculators & Online Planners for information and resources. You can also speak with an advisor by calling 800-531-8722.


The contents of this document are not intended to be, and are not, legal or tax advice. The applicable tax law is complex, the penalties for noncompliance are severe and the applicable tax law of your state may differ from federal tax law. Therefore, you should consult your tax and legal advisors regarding your specific situation.



1 Comment
Community Manager
Community Manager

Wiz2, that is a great question you ask and my thanks to you for asking it.  Here is how I would answer your question based on how I read the new tax bill.  However, I highly recommend that you speak with a qualified tax professional as you determine how to apply this to your situation. 


The short answer is “no.”  The standard deduction is not age dependent but based on how you file your taxes (married filing jointly, head of household, unmarried, etc..).  One thing that did change that might benefit you is the decrease of the medical expenses deduction from 10% to 7.5% of Adjusted Gross Income for 2017 and 2018 tax years.  Keep in mind that it is scheduled to revert back to 10% of AGI in 2019. 


Thank you again for your question and have a great day.