If you’ve spent decades building a healthy 401(k) balance, congratulations. That takes discipline. But we need to share something important with you: a large retirement account isn’t automatically a retirement win. In fact, it can create a tax problem most people never see coming.
We talk to people across metro Atlanta every week who are proud of their 401(k) balances. And they should be. But we’ve noticed a pattern. Many of them have no idea that the size of that account could trigger a cascade of tax consequences down the road. Let’s break down exactly what that means.
What Counts as a “Qualified Account”?
Before we dig into the problem, let’s clarify what we’re talking about. A 401(k), IRA, 403(b), SEP, SIMPLE, and TSP are all examples of tax-deferred accounts. Think of them as a handshake deal with the IRS.
Here’s how that deal works:
- You get a tax break today for the money you contribute
- Your money grows without being taxed year to year
- You pay taxes later, when you withdraw the funds
- The IRS decides the tax rate at that time, not you
That last point is the one most people overlook. You don’t control that future tax rate. The government does.
The “Cascading Effect” Explained
We use a phrase often on our RetireATL podcast: the cascading effect. It describes what happens when too much of your retirement income comes from tax-deferred accounts. It’s not just one tax bill. It’s a chain reaction.
Here’s how it plays out. Once you turn 73, the IRS requires you to start taking Required Minimum Distributions, or RMDs, from these accounts. You have to take this money whether you need it or not. That withdrawal counts as taxable income, no matter your actual spending needs.
That’s problem number one. But it doesn’t stop there.
How RMDs Affect Social Security and Medicare
Here’s where things get complicated. Both the taxation of Social Security benefits and Medicare premiums are tied to your income. That means the more taxable income you report, the more you may pay.
Up to 85% of your Social Security benefit can become taxable, depending on your overall income. Additionally, your Medicare Part B and Part D premiums are based on your income through IRMAA (Income-Related Monthly Adjustment Amount) surcharges. The more your RMDs push up your taxable income, the higher your Medicare premiums can climb.
We’ve seen this cascade hit extreme levels. In one case, a client was supposed to receive around $4,000 a month in Social Security benefits. However, because their RMDs were so large, their Medicare premiums shot up. Those premiums get deducted directly from Social Security checks. The result? Their net Social Security benefit landed close to zero dollars, even though they still owed taxes on it.
> That’s not a typo. A benefit reduced to almost nothing, yet the tax bill still showed up.
Why Waiting Until 73 Limits Your Options
One of the most effective strategies we use is called a Roth conversion. This involves moving money from a tax-deferred account into a Roth account, paying the tax now, so that the money can grow tax-free from that point forward.
But timing matters enormously here. Once you reach age 73 and your RMDs begin, you lose a key option. An RMD cannot double as a Roth conversion. They’re treated as separate transactions, even though the tax impact is similar dollar for dollar.
Here’s an example to make this concrete. Say you owe a $100,000 RMD and also want to do a $100,000 Roth conversion. You might assume you could combine them. You can’t. Instead, you’d need to recognize $200,000 of taxable income that year to accomplish both.
This is exactly why timing is so critical. If you act before your RMDs start, you can potentially convert those same dollars into a Roth account instead of a taxable one. Same tax bill, very different outcome for your future.
Common Myths That Stop People From Taking Action
We hear the same objections again and again. Let’s clear a few up:
- “I make too much money to use a Roth.” True, you can’t contribute directly to a Roth IRA above certain income limits. However, there is no income limit on Roth conversions.
- “My balance is too big to convert.” There’s no cap on how much you can convert in a given year.
- “This will take too much time and cost too much money.” Our process is three meetings and zero dollars. No cost, no obligation.
Here’s the truth: most people understand there’s a problem. They just can’t see the real-world benefit clearly enough to act. That’s where we come in. Our goal is to make the cause and effect of your decisions crystal clear, so you can make an informed choice.
Why the “Double Taxation” Problem Hurts Even More
Let’s take this one step further. Once your RMD money lands in your checking account, what happens next? You probably spend part of it. The rest likely gets reinvested somewhere, whether that’s a brokerage account, a CD, or a savings account.
Here’s the catch. Any growth on that reinvested money is also taxable. So you’re taxed once when the RMD comes out, and taxed again on whatever that money earns afterward. We call this double taxation, and nobody enjoys paying tax on their tax.
This cycle can represent a six-figure impact over the course of your retirement. That’s not an exaggeration. It’s the real cost of inaction.
Recognized for Excellence in Woodstock, Georgia
We’re proud to have been named the Best Financial Planner in Woodstock, GA for 2023, 2024, and 2025. This recognition reflects the trust our clients place in us and the results we strive to deliver year after year. We work hard to make retirement planning clear, approachable, and effective, whether you’re just starting to think about retirement or you’re already there. We don’t take this honor lightly, and we see it as motivation to keep raising the bar for the families we serve throughout metro Atlanta.
Take the Next Step Toward Tax Clarity
If any part of this cascade sounds familiar, don’t wait until age 73 to address it. The sooner you understand your options, the more control you have over your tax future. We offer a no-cost, no-obligation 3 Meeting Retirement Planning Process designed to give you clarity around your taxes, your income, and your long-term strategy.
Visit us at www.vincentplanning.com or call us directly at 770-485-1876 to get started.
Prefer to talk things through first? We understand. You can also Book a “Can We Help” Call to speak with an advisor and see if we are the right fit for you.
For personalized financial guidance, reach out to Vincent Financial Group today to schedule a consultation.