The RMD Mistake 8 in 10 Retirees Make Without Realizing It

Facing a 25% penalty on an overlooked $18,000 RMD means losing over $4,500 directly to the IRS. That is what getting this wrong costs.

Many retirees unexpectedly face steep IRS penalties because they mismanage their Required Minimum Distributions. These mistakes are often simple oversights, not attempts to avoid taxes.

Knowing the specific RMD rules is key for managing these distributions with confidence and keeping clear of fines.

This guide will walk you through how to review your RMD situation, confirm your calculations and deadlines, and understand when to get expert help for full compliance.

RMDs Start At Age 73

Required Minimum Distributions (RMDs) are mandatory withdrawals you must take from most of your tax-deferred retirement accounts.

These aren't optional savings; they're a requirement put in place by the government to ensure that the money you've saved with tax advantages throughout your working years is eventually distributed and taxed, rather than being held indefinitely.

For the vast majority of people, these mandatory distributions typically kick in during the year they celebrate their 73rd birthday. This age is a firm line in the sand for financial planning.

A wide range of accounts fall under these RMD rules. This includes your Traditional IRAs, along with SEP and SIMPLE IRAs. Employer-sponsored plans like a 401(k) or a 403(b) are also included. Even Roth 401(k)s, despite having "Roth" in their name, are subject to RMDs, just like their traditional counterparts.

Here's a crucial distinction many retirees overlook.

Roth IRAs, if you're the original owner, are exempt from RMDs during your lifetime. This unique feature allows those specific savings to continue growing tax-free, without forced withdrawals, which can be a significant benefit for your overall estate planning.

Quick RMD Tips

You Must Combine All IRAs to Calculate Total RMD

A surprisingly common pitfall for retirees is failing to combine all their Traditional IRA balances before calculating their total RMD.

This oversight is easy to make, often leading to a costly shortfall.

The rule is clear: your RMD for Traditional IRAs is based on the total fair market value across every Traditional IRA you own. Not just one.

Imagine you have a Traditional IRA with $300,000 and another with $200,000. These sum to a $500,000 total for RMD purposes.

At age 73, you'd divide that $500,000 total by the IRS Uniform Lifetime Table divisor of 26.5. This yields an RMD of approximately $18,868.

The critical overlooked detail: taking an RMD from only one IRA, or less than the total required amount, results in an under-distribution. Any shortfall, even a small one, triggers significant IRS penalties on the unwithdrawn amount.

Always add up every Traditional IRA you own first.

The First RMD Deadline Can Be Delayed Once

While most annual Required Minimum Distributions need to be taken by December 31st each year, your very first RMD, for the year you turn 73, has a unique timing option.

You can delay that initial distribution until April 1st of the following calendar year.

This flexibility sounds appealing, offering a few extra months, but it hides a common trap many retirees overlook.

Here's the catch: if you choose to delay that first RMD, you'll actually end up taking two distributions within the same tax year. Your delayed first RMD would be due by April 1st.

Then your second RMD for that same calendar year would still be due by December 31st. That's a lot of money to pull out in one go.

Having two large withdrawals hit your taxable income so close together can easily push you into a much higher tax bracket than you planned. This could mean a substantially bigger tax bill than if you'd spread them out.

Every RMD after that first one, starting from the year following your age 73 year, must be taken by December 31st.

It's a tricky choice: delay now and potentially pay more taxes later, or take it on time.

Wrong Life Expectancy Table Causes Miscalculations

Calculating your Required Minimum Distribution correctly hinges on using the right IRS life expectancy table for your age.

Just as mismanaging deadlines can lead to issues, an incorrect calculation table introduces another major pitfall, causing you to under-distribute funds without realizing it. The most common table for account owners is the IRS Uniform Lifetime Table, which the IRS updates periodically to reflect current life expectancies.

The overlooked detail here is using an outdated table or the wrong one entirely. There are other tables, like the Single Life Expectancy or Joint Life Expectancy tables, but those only apply in very specific situations, typically involving beneficiaries or spouses.

Using the wrong table provides an incorrect 'divisor' for your RMD calculation. For instance, if you're 73, the current Uniform Lifetime Table divisor is 26.5.

If you accidentally use an older table, or one meant for a different scenario, that divisor would be off. This means your calculated RMD amount would be too low, leaving you exposed to penalties.

Always check that you are referencing the most current IRS Uniform Lifetime Table for your specific age. It is a simple step that ensures your RMD calculation is spot on, preventing a shortfall before it ever happens.

Roth 401(k)s Have RMDs, Unlike Roth IRAs

While Roth IRAs are exempt from RMDs for the original owner, Roth 401(k)s are not.

Many retirees assume that because Roth IRAs offer tax-free withdrawals in retirement and don't have RMDs, all Roth accounts share this benefit. It's a completely understandable assumption to make.

For the original owner, Roth IRAs indeed allow your money to grow tax-free and be withdrawn tax-free in retirement, with no RMDs during your lifetime. This offers incredible flexibility.

However, the overlooked detail is that Roth 401(k)s are employer-sponsored plans, and they follow different rules. They are subject to Required Minimum Distributions starting at age 73, just like Traditional 401(k)s.

If you have a Roth 401(k) and want to avoid these RMDs, there's a straightforward move you can make: roll the balance over into a Roth IRA. This transfer moves the money from a plan with RMDs to an account that doesn't have them, as long as you're the original owner.

While it requires a bit of paperwork, moving your Roth 401(k) to a Roth IRA before your RMD start date means one less account to worry about for mandatory withdrawals.

Beneficiary RMDs Depend on Relationship and Account Type

RMD rules for inherited IRAs and 401(k)s indeed change significantly based on who inherits the account and their relationship to the person who passed away. It's far more intricate than managing your own RMDs. The SECURE Act brought big shifts to these rules, especially for beneficiaries who aren't a spouse.

This legislation ended the ability for many non-spouse beneficiaries to stretch distributions over their lifetime. Now, a key distinction exists: 'eligible designated beneficiaries' and 'non-eligible beneficiaries'. The eligible group includes spouses, the minor children of the deceased (until they reach the age of majority, typically 21), disabled or chronically ill individuals, or those not more than 10 years younger than the original owner.

For most other beneficiaries, the 'non-eligible' group, an often-missed detail is the 10-year rule.

This is a big deal. It means the entire inherited account balance must be fully distributed by the end of the tenth calendar year following the original owner's death. Missing this deadline triggers penalties of 25% of the amount not withdrawn. If you've inherited a retirement account, figuring out which category applies to you is a critical first step. For situations this complex, a quick chat with a tax professional or a fee-only fiduciary advisor can save you from a costly oversight.

Your Custodian Reports Balances, Not Your Total RMD

Your financial institution, often called a custodian, is a helpful partner, but they typically report account balances and provide an RMD estimate only for the specific retirement accounts they hold for you.

This is where many retirees get tripped up, assuming their bank or brokerage sees the whole picture. They can only ever see what's directly with them, not accounts you hold elsewhere.

Think of it this way: your 401(k) custodian might calculate an RMD of about $15,094 based on your $400,000 balance in that single account. However, if you also have Traditional IRAs totaling $500,000 at a different institution, which would have an RMD of approximately $18,868, that first custodian won't know about it.

That extra $18,868 is still your responsibility.

Relying solely on one institution's number, even if it seems helpful, can easily lead to an under-distribution across all your accounts. And that's exactly where unexpected IRS penalties kick in, creating a frustrating surprise.

Any Shortfall Triggers the Penalty

Not taking your full Required Minimum Distribution triggers a serious penalty from the IRS.

If you miss the deadline entirely, or simply don't withdraw enough, the penalty is a steep 25% of the amount you failed to distribute.

There's a small reprieve: if you correct the shortfall promptly and can show a "reasonable cause" for the error, that penalty might be reduced to 10%. But it's still a hit that no one wants to take.

Here's the kicker that catches most people off guard: the penalty isn't just on the tiny bit you missed. Even a small under-distribution results in a significant penalty applied to the entire amount you should have withdrawn but didn't, making a simple oversight very costly.

For example, imagine your total RMD was $33,962, but you only took the $15,094 from your 401(k). That leaves $18,868 still due. The IRS will apply the 25% penalty to that full $18,868, costing you $4,717 out of pocket.

How to Ensure You Meet Your RMD Obligations

To truly meet your Required Minimum Distribution obligations and steer clear of penalties, you need to put a clear system in place.

Start by gathering every retirement account you hold that is subject to RMDs. This includes your Traditional IRAs, all 401(k)s, and even Roth 401(k)s, because each one factors into your overall responsibility.

Next, make it a yearly habit to verify your RMD calculation. You'll need the current IRS Uniform Lifetime Table for your age, then combine the balances from all those accounts. For example, if you have a Traditional IRA with $300,000 and another with $200,000, you'll sum them to $500,000 before dividing by the table's divisor, like 26.5 at age 73.

Set firm calendar reminders for RMD deadlines. Your very first RMD, for the year you turn 73, can be pushed until April 1st of the next year.

All subsequent RMDs are due by December 31st.

Finally, don't hesitate to consult a qualified financial advisor or tax professional. They can help confirm your calculations, navigate complex situations like inherited IRAs, and ensure your specific strategy is sound.

Frequently Asked Questions

What happens if I miss my RMD deadline?

Missing your RMD deadline or taking an insufficient amount typically results in a 25% IRS penalty on the amount not withdrawn. This can be reduced to 10% if corrected quickly and reasonable cause is shown.

Are Roth IRAs subject to RMDs?

No, Roth IRAs are exempt from RMDs during the original owner's lifetime. However, Roth 401(k)s are subject to RMDs, though you can roll them into a Roth IRA to avoid this.

Can my financial advisor calculate my RMD for me?

While your custodian can provide an estimate for the accounts they hold, it's ultimately your responsibility to ensure the total RMD across all your retirement accounts is satisfied. A financial advisor can help verify your overall calculation.

What is the 10-year rule for inherited IRAs?

The 10-year rule requires most non-spouse, non-eligible beneficiaries of inherited IRAs or 401(k)s to fully distribute the account within 10 calendar years following the original owner's death. This changed with the SECURE Act.

Can I delay my first RMD past age 73?

Your very first RMD, for the year you turn 73, can be delayed until April 1st of the following calendar year. However, this means taking two RMDs in that subsequent year, which could impact your tax bracket.

Navigating RMDs with Confidence

Successfully handling your Required Minimum Distributions needs active attention and a clear grasp of the rules. You cannot just rely on institutions to get it all right for you.

By watching your distributions closely, you can avoid joining the many retirees who pay hefty penalties for RMD details they missed.

Implement these steps to truly take charge of your retirement savings, protect your financial future, and prevent those avoidable IRS penalties.