Roth vs Traditional IRA: The Tax Bracket Test That Settles It

You have $7,500 for an IRA this year and two accounts to choose from. The Roth vs traditional IRA decision comes down to one comparison: your marginal tax rate today against the rate you expect to pay when the money comes out. Higher today favours the traditional deduction. Higher later, or too close to call, favours the Roth.

For executives, income rules often decide before the bracket test gets a say. A workplace retirement plan can remove the traditional deduction at surprisingly modest salaries, and the Roth has an income ceiling of its own. This piece covers the bracket test, the 2026 limits, required minimum distributions and the backdoor route. We are not tax advisers, so check your own numbers with one before acting.

Roth vs Traditional IRA: The Bracket Test

A traditional IRA gives you a deduction now, if you qualify for one, and taxes the money when it leaves. The IRS page on traditional IRAs says amounts in the account, including earnings and gains, are not taxed until you take a distribution.

A Roth reverses the order. The IRS page on Roth IRAs says you cannot deduct contributions, and qualified distributions are tax free.

Put the same money through both and the arithmetic is tidy. Suppose you are in the 24% bracket and put $7,500 into a deductible traditional IRA. You save $1,800 of tax this year. The fair Roth comparison is $5,700, the same $7,500 after that tax. If both accounts double and you withdraw the traditional money at 24%, each leaves you with $11,400. A dead heat.

Now change only the withdrawal rate. Taken out at 12%, the traditional account leaves $13,200 and beats the Roth. Taken out at 32%, it leaves $10,200 and loses. The growth rate makes no difference to who wins. The two tax rates decide it.

Marginal is the right word for both sides. A deduction comes off the top of your income, so it saves tax at your highest bracket. Withdrawals in retirement sit on top of whatever other taxable income you have that year, so they are taxed at the rate that pile reaches.

Where the 2026 Brackets Sit

For 2026, the IRS inflation adjustments put the 24% bracket for single filers at taxable income over $105,700, the 32% bracket over $201,775 and the 35% bracket over $256,225. For married couples filing jointly, the same brackets start at $211,400, $403,550 and $512,450. The top rate of 37% starts at $640,600 for single filers and $768,700 for joint filers.

An executive couple with $450,000 of taxable income in 2026 sits in the 32% bracket. Every deductible dollar saves them 32 cents.

The other side of the test is harder. Nobody knows their tax rate in twenty years, and nobody knows the tax code then either. What you can estimate is the size of your future income. Add up any pension, deferred compensation payouts, rental income and the withdrawals your existing pre-tax accounts will eventually force. If that total lands in the same bracket you are in now, the test is a draw, and the Roth’s other features start to decide it.

A large 401(k) balance makes the future pile bigger, because pre-tax money has to come out eventually. We come back to that under required minimum distributions.

Can You Deduct a Traditional IRA With a Workplace Plan?

Income limits start deciding for you at this point. If neither you nor your spouse is covered by a retirement plan at work, the deduction phase-outs do not apply, according to the IRS announcement of the 2026 limits. You can deduct a traditional IRA contribution at any income.

Once a workplace plan is in the picture, the deduction shrinks and then disappears. For 2026, a single filer covered at work loses it gradually between $81,000 and $91,000 of modified adjusted gross income. For a married couple filing jointly where the contributing spouse is covered, the range is $129,000 to $149,000. If you are not covered but your spouse is, your range is $242,000 to $252,000. A married person filing separately who is covered has a range of $0 to $10,000, and the IRS says that one is not adjusted for inflation.

Read those numbers against a senior salary. A covered executive with $200,000 of income gets no deduction for a traditional IRA contribution, single or married. The contribution is still allowed. It is nondeductible, which removes the first half of the bracket test entirely.

A nondeductible traditional IRA is a weak product. Nothing comes off your tax bill on the way in, and the growth is taxed when it comes out. A Roth funded with the same after-tax money wins whenever its withdrawals are qualified, because they carry no tax at all.

Roth IRA Income Limits for 2026

The Roth has its own ceiling. The same IRS release says the ability to contribute phases out between $153,000 and $168,000 of modified adjusted gross income for single filers and heads of household, and between $242,000 and $252,000 for married couples filing jointly.

Put the two sets of limits together and an executive covered by a workplace plan falls into one of three bands. Below the deduction phase-out, the bracket test applies in full. Between the deduction phase-out and the Roth phase-out, the Roth wins almost by default, since the traditional option has lost its deduction. Above the Roth phase-out, neither direct contribution is much use, and the backdoor covered below becomes the route.

The contribution limit is shared. According to the IRS contribution limits page, total contributions to all your traditional and Roth IRAs for 2026 cannot be more than $7,500, or $8,600 if you are 50 or older, or your taxable compensation if that is less. You can split it between the two accounts, but you cannot fund both in full.

The IRS Roth page also notes that you can keep contributing to a Roth IRA after age 70½, which matters for executives who keep earning into their seventies.

The Two Accounts Side by Side

	Traditional IRA	Roth IRA
Tax break	Deduction now, if you qualify	Tax-free qualified withdrawals later
2026 deduction with a workplace plan	Phases out at $81,000 to $91,000 single, $129,000 to $149,000 joint	No deduction at any income
2026 income limit to contribute	None	Phases out at $153,000 to $168,000 single, $242,000 to $252,000 joint
2026 contribution limit (both combined)	$7,500, or $8,600 at 50+	$7,500, or $8,600 at 50+
Withdrawals in retirement	Taxed as income	Tax free if qualified
Required minimum distributions	Generally from age 73	None while the owner is alive
Wins the bracket test when	Your rate today is higher than your rate later	Your rate later is the same or higher

For a covered executive, the second row usually settles the Roth vs traditional IRA choice before the bracket test starts.

Required Minimum Distributions

Traditional IRAs come with a clock you cannot switch off. Required minimum distributions generally start at age 73, according to the IRS RMD FAQs. The first one can be pushed to April 1 of the following year. Missing one can cost an excise tax of 25% of the amount you should have taken, cut to 10% if you correct it within two years.

Roth IRAs are exempt. The same IRS page says the rules do not apply to Roth IRAs or designated Roth accounts while the owner is alive. The IRS Roth page puts it plainly: you can leave amounts in a Roth IRA as long as you live.

This feeds straight back into the bracket test. Required withdrawals add taxable income in your seventies whether you need the money or not. Someone with a large pre-tax 401(k), a traditional IRA and a pension can find the forced withdrawals alone push them into a higher bracket than they planned for. A Roth is a pot of money that stays out of that pile.

It also changes what you leave behind. A Roth you never had to draw down leaves more for your heirs. Our piece on net worth by age is a useful check on whether you are likely to spend everything you save, or pass a good part of it on.

The Backdoor, Briefly

Above the Roth income limit, there is a route usually called the backdoor Roth. Charles Schwab describes it as contributing after-tax money to a traditional IRA and then converting those funds to a Roth IRA.

The catch is the pro-rata rule. Schwab explains that the IRS generally considers all your traditional IRA balances together, including traditional, rollover, SEP and SIMPLE IRAs. In Schwab’s example, someone converts a $7,000 after-tax contribution while holding $93,000 of pre-tax IRA money. About 93% of the total is pre-tax, so about $6,510 of the conversion is taxable.

The backdoor works cleanly for people with no pre-tax IRA money, and gets expensive for people with a large rollover IRA from an old job. Each conversion also starts its own five-year clock for the early withdrawal penalty, which our piece on the Roth IRA 5 year rule explains in full. Our comparison of a Roth IRA vs brokerage account covers where the next dollar goes once the IRA is full.

When Traditional Still Wins

There are real cases for the traditional IRA, and they all come back to the bracket test.

The first is the executive with no workplace plan. If neither spouse is covered, the deduction is available at any income. Someone in the 35% bracket today who expects to retire into the 22% or 24% bracket should take the deduction and pay the lower rate later.

The second is the expected drop. If your retirement income will be modest next to your peak salary, perhaps because much of your savings already sits in Roth accounts and taxable investments, a deduction at today’s rate is worth more than tax-free withdrawals at a low rate later.

State tax belongs on both sides of the test. If you expect to retire in a different state, compare your combined federal and state rate today with the combined rate where you plan to live.

Most covered executives earn too much for the traditional IRA deduction anyway. For them the bracket test does its real work inside the 401(k), and our guide to IRA vs 401(k) covers which account to fund first. The IRS Roth comparison chart says a designated Roth 401(k) has no income limit to participate, so if your plan offers one, the same test decides how to split your workplace contributions.

How We Would Decide

Our newsroom’s order of questions is short. First, are you or your spouse covered by a workplace plan, and where does your income sit against the 2026 ranges? For most executives that answers the Roth vs traditional IRA question on its own. Second, if the deduction is available, compare your marginal rate now with an honest estimate of your rate on withdrawals. Third, if the test is close, take the Roth, because it has no required distributions and leaves no tax bill waiting in your seventies.

Write the answer down with a date on it. Our guide on short term career goals shows how to turn a vague intention into something specific and finished. Concrete thinking helps too, because the useful question is which account this year’s $7,500 goes into and by when.

Your employer decides more of this than it seems. If your employer offers a 403(b) rather than a 401(k), our guide to 403b vs 401k explains the differences. If you are weighing an offer, our breakdown of a compensation package shows where the retirement plan sits in the total. If you are moving from one of the big 4 consulting firms to an industry role, check whether the new plan changes your coverage for the year. If you run your own firm, the structure in our guide to llc vs s corp affects which plans you can set up for yourself.

Retirement plans also shape the years before retirement. If you plan a mid-career break to retrain, our piece on what is upskilling covers the options, and a low-income year like that is when a traditional deduction is worth least. If you plan to retire abroad, one of the countries with best work life balance may appeal, so ask a cross-border adviser how that country taxes US retirement withdrawals before you count on a low rate. Make the call rested and clear-headed; our piece on caffeine and anxiety covers one habit that gets in the way. For the meeting with your adviser, our smart casual dress code men guide covers what to wear.

Frequently Asked Questions

Can I contribute to both a Roth and a traditional IRA in the same year?

Yes, but the limit is shared. The IRS caps total contributions to all your traditional and Roth IRAs for 2026 at $7,500, or $8,600 at 50 and over, or your taxable compensation if that is less.

Is a Roth IRA better for high earners?

Usually, when they can use one. A high earner covered by a workplace plan loses the traditional deduction well before the Roth income limit, so the traditional IRA becomes nondeductible. Above the Roth limit, the backdoor route applies, provided pre-tax IRA balances are small enough to keep the pro-rata tax low.

Do Roth IRAs have required minimum distributions?

Not while the owner is alive. The IRS RMD FAQs say the rules do not apply to Roth IRAs or designated Roth accounts during the owner’s lifetime. Traditional IRAs generally require withdrawals from age 73.

Most executives never get to run the full bracket test on a Roth vs traditional IRA choice, because a workplace plan takes the traditional deduction away first. When the test does apply, the answer is the account that taxes the money at the lower of the two rates, and a tie goes to the Roth.