Most people spend their entire working life thinking about retirement accounts in terms of how much they've accumulated. A $1 million IRA feels like a million dollars.
It isn't quite.
If most of that money went in before taxes, you've got a silent partner in that account, and that partner is the IRS. Every dollar you pull out of a traditional IRA or 401(k) generally becomes taxable income the moment you take it.
That's why one of the most overlooked questions I ask clients isn't just "how much have you saved?" It's "where have you saved it?"
For households approaching retirement with real assets, understanding the difference between taxable, tax-deferred, and tax-free money can open up a lot more flexibility down the road than most people realize.
The Three Buckets
I like to think of retirement wealth as sitting in three different buckets.
Taxable money is your brokerage accounts, bank accounts, and anything else held outside a retirement plan. Interest and dividends get taxed along the way, and you may owe capital gains when you sell.
Tax-deferred money is your traditional IRAs, 401(k)s, and similar accounts. You got a tax break putting the money in, but you'll generally pay ordinary income tax pulling it out.
Tax-free money is qualified Roth IRA and Roth 401(k) money. You paid tax on it going in, but qualified withdrawals come out free of federal income tax.
Most of the successful savers I meet arrive at retirement heavily loaded into that second bucket, and honestly, that makes sense. For decades, contributing to a 401(k) cut your current tax bill while building real wealth. The problem doesn't show up until later.
Eventually, the IRS Wants Its Share
Traditional retirement accounts don't get to sit untouched forever. Under current law, if you were born in 1960 or later, you generally have to start Required Minimum Distributions, or RMDs, at age 75. Earlier birth years may start sooner.
Once RMDs kick in, the government sets a minimum you have to pull out of those tax-deferred accounts every year, whether you need the money or not.
I've had clients reach their mid-70s with a $2 million traditional IRA. Using today's IRS tables, that first RMD around age 75 could run roughly $81,000. That's taxable income before we've even added in Social Security, pensions, dividends, interest, or anything else you need to live on.
That's where tax planning stops being a side conversation and becomes retirement planning itself.
Taxes Rarely Stay in Their Own Lane
Extra taxable income doesn't just mean a bigger tax bill. It can push more of your Social Security benefit into taxable territory. It can bump you into a higher bracket. It can raise your Medicare Part B and Part D premiums through what's called IRMAA. It can even affect how efficiently your wealth eventually passes to your kids.
One decision can ripple through your whole plan. That's exactly why chasing the lowest possible tax bill this year can sometimes leave you worse off over the long haul.
The Window Between Retirement and RMDs
Here's an opportunity a lot of affluent clients never see coming.
Say you retire at 63. Your salary's gone. Maybe you're holding off on Social Security for a few years. RMDs haven't started yet. All of a sudden, your taxable income can drop well below what it was during your career, and even below what it may be later in retirement.
Those years can be incredibly valuable. Rather than automatically trying to report as little income as possible every single year, it can actually make sense to intentionally recognize some income while your rate is favorable. One way I help clients do that is through a Roth conversion.
What a Roth Conversion Actually Does
A Roth conversion moves money out of a traditional IRA and into a Roth IRA. Whatever you convert becomes taxable income that year.
I know, that doesn't sound appealing on its face. Why would you volunteer for a tax bill?
Because you're trading a known tax bill today for more flexibility tomorrow. Once that money is in the Roth, qualified withdrawals come out tax-free, and Roth IRAs currently have no lifetime RMD requirement for the original owner. A conversion can shrink your future IRA balance and, with it, your future RMDs.
The real question was never "do I want to pay taxes?" You're going to pay them eventually, one way or another. The real question is when, and at what rate.
Roth Conversions Aren't Automatically a Good Idea
This is where I see people get ahead of themselves. "Do a Roth conversion" isn't a strategy by itself. How much you convert, when you do it, and what else is going on in your financial picture all matter enormously.
Convert too much in one year and you can push yourself into a higher bracket. You could trigger higher Medicare premiums two years down the road. You could create a tax bill you didn't need to create if your future rate ends up lower than expected. And paying the conversion tax out of the IRA itself changes the math entirely.
A smart conversion strategy usually doesn't look like one big transaction. It looks like carefully filling up the tax brackets you're already sitting in, a little at a time, over several years.
Think in Terms of Lifetime Taxes, Not This Year's Taxes
Most people ask "how do I pay less tax this year?" I want clients asking a different question: "how do I manage taxes over the rest of my life?"
Those aren't always the same goal. If you could pay 22 cents on the dollar today versus deferring the decision and possibly paying 24 or 28 cents later, paying today might genuinely be the tax-saving move.
Nobody knows exactly where future tax rates are headed, myself included. But good planning was never about certainty. It's about weighing reasonable scenarios and building in flexibility.
The Surviving Spouse Problem
Here's a reason I bring this up with every married couple I work with: eventually, one spouse outlives the other.
Household income may drop a bit after the first spouse passes, but the survivor also moves from married filing jointly brackets to single filer brackets, and those brackets are a lot less forgiving. A large IRA that felt manageable as a couple can become a real tax burden for a surviving spouse who's still facing the same RMDs with a lot less room in each bracket.
Doing this planning while both spouses are still here can meaningfully soften that blow later.
Your Kids Are Part of This Too
The tax character of what you leave behind matters to your heirs as well. Under current law, most non-spouse beneficiaries who inherit a traditional IRA have to empty that account within 10 years. For an adult child inheriting during their own peak earning years, that can land at a genuinely bad time tax-wise.
That doesn't mean everyone should convert their whole IRA just to spare their kids someday. It does mean I never treat estate planning and tax planning as two separate conversations. They're the same conversation.
Five Questions Worth Asking Before Year-End
What percentage of our wealth is taxable, tax-deferred, and tax-free?
What might our RMDs actually look like at 73 or 75?
Are there years between retirement and RMDs where our income may temporarily dip?
Would partial Roth conversions genuinely improve our lifetime tax picture?
What happens to the surviving spouse's taxes after the first of us passes?
None of these require guessing. They can be modeled, and I'd rather model them with you now than have you find out the hard way later.
The Bottom Line
Accumulating your retirement savings was only half the job. Eventually you have to distribute it, and how you distribute it can matter just as much as how you built it in the first place.
For someone with real assets built across taxable, tax-deferred, and tax-free accounts, that mix creates choices. Choices about where your income comes from. Choices about when you recognize taxes. Choices about managing Medicare premiums. Choices about what you leave behind.
In retirement, flexibility has real value. And sometimes the smartest tax move isn't paying the least you possibly can this year. It's building the ability to choose when you pay, for years to come.
If you'd like to see where your own accounts fall across those three buckets, that's a conversation I'd be glad to have with you.