How a Tax-Efficient Withdrawal Strategy Could Save You Tens or Hundreds of Thousands

Meet two retirees. Same age. Same total savings: $1.5 million. Same annual spending: $80,000. Same Social Security benefits. They retire the same year.

Over 20 years of retirement, one of them pays $40,000 more in federal taxes than the other.

The difference? The order in which they withdrew money from their accounts.

That's it. Not investment returns. Not spending habits. Not a fancy tax loophole. Just the sequence in which they drew down their savings — which accounts first, which last.

Withdrawal order is one of the most overlooked decisions in all of retirement planning. And unlike market returns, it's completely within your control.

Most retirees have savings spread across three types of accounts. Each one is taxed differently.

Bucket 1: Traditional (pre-tax)

This includes Traditional IRAs, 401(k)s, 403(b)s, and similar accounts. You got a tax deduction when you put money in. Every dollar you take out in retirement is taxed as ordinary income. The government is a silent partner in this account.

Bucket 2: Roth (post-tax)

You paid taxes before putting money in. Now the money grows tax-free and comes out tax-free. No tax on withdrawals, no Required Minimum Distributions during your lifetime. This is the crown jewel of retirement accounts.

Bucket 3: Taxable brokerage

Regular investment accounts. No special tax treatment going in. But long-term capital gains (assets held over a year) are taxed at preferential rates — 0%, 15%, or 20% depending on your income. Dividends are taxed along the way.

The conventional advice is to spend taxable accounts first, then Traditional, then Roth. Save the best for last.

The logic sounds right: let your tax-advantaged accounts keep growing as long as possible, and your Roth money in particular should compound tax-free for as long as you can manage.

The problem is that this advice ignores what happens in the middle. If you spend your brokerage account quickly and then shift to all Traditional withdrawals, you may find yourself in your 70s and 80s with enormous pre-tax balances — and a government-mandated withdrawal schedule (RMDs) forcing you to take out more than you need, pushing you into higher tax brackets and triggering Medicare surcharges.

The smarter approach isn't to pick one order and stick to it. It's to fill your lower tax brackets deliberately, year by year, from whatever account makes the most sense that year.

Comparing the three withdrawal orderings

There's a growing school of thought that retirees should draw from their Traditional accounts aggressively in their early retirement years, before Social Security and RMDs kick in, to reduce the size of those accounts before they're forced to.

This strategy has real merit. If you retire at 62 and don't take Social Security until 70, you have an eight-year window where your income may be very low. That's an ideal time to pull from Traditional accounts (and pay tax at the 12% rate) rather than waiting until your 70s, when RMDs and Social Security together could push you into the 22% or 24% bracket.

But "Traditional first" isn't always right either. In years when you have large capital gains, high Social Security income, or other income sources, hammering Traditional withdrawals can push you into a higher bracket unnecessarily. The right answer is contextual, and it changes year by year.

Required Minimum Distributions (RMDs) begin at age 73. The IRS calculates a minimum amount you must withdraw from your pre-tax accounts each year, based on your account balance and your age. You pay ordinary income tax on every dollar.

If you've been diligently saving in a Traditional 401(k) for 35 years, you might arrive at 73 with $2 million in pre-tax accounts. Your RMD in year one might be $75,000 — taxable income you didn't ask for and don't need.

Stack that on top of $35,000 in Social Security income (85% of which may now be taxable), and you're looking at $98,750 in taxable income from sources you couldn't control — before you spend a single dollar you actually wanted.

A tax-efficient withdrawal strategy anticipates this. By drawing down Traditional accounts during the early retirement years (even at a modest 12% or 22% rate), you reduce the future RMD burden and can keep your income in a manageable range throughout retirement.

When your income — including RMDs and Social Security — climbs above certain thresholds, Medicare charges you higher premiums. These surcharges are called IRMAA (Income-Related Monthly Adjustment Amount).

For 2026, a single filer with income above $109,000 pays more for Medicare Part B. A married couple above $218,000 faces the same surcharge. The jumps are steep: crossing the first tier costs a couple close to $2,000 per year in extra Medicare premiums, and higher tiers cost several thousand more.

This is another reason why letting Traditional accounts balloon unchecked is a problem. A thoughtful withdrawal strategy keeps your income below the IRMAA thresholds — or at least manages which years you cross them.

For a deeper look at how IRMAA works and how to avoid it, see our post on how to avoid IRMAA.

Tax-efficient withdrawal planning doesn't have to be complicated. Here's a simplified framework:

1. Estimate your income floor: Social Security, pensions, and RMDs you can't avoid. What tax bracket does that put you in?

2. Fill your lower brackets deliberately: If your unavoidable income is $40,000 and you're in the 12% bracket up to ~$48,000, consider pulling another $8,000 from Traditional accounts at 12% rather than saving it for a year when it might come out at 22%.

3. Use Roth for flexibility: Roth withdrawals don't count as income for tax purposes, for Social Security taxation, or for IRMAA calculations. They're the cleanest source of spending money in high-income years.

4. Harvest taxable gains in low-income years: If your income is below ~$96,950 (joint) in a given year, long-term capital gains may be taxed at 0%. That's a powerful opportunity to rebalance or shift assets without a tax bill.

5. Revisit every year: Tax law changes. Your spending changes. Your account balances shift. A withdrawal strategy isn't a set-it-and-forget-it decision.