Subscribe

Roth IRA vs. Traditional IRA: Which Is Right for You?

The Roth-or-Traditional choice can swing $50,000 to $100,000. The bracket math, 2026 limits, the Backdoor Roth, and where to open your IRA.

By Michael Hewitt, Founder & Editor-in-Chief. Updated September 29, 2026.

The choice between a Roth and a Traditional IRA looks like a tax technicality, and over a working life it is worth $50,000 to $100,000. Put $7,500 a year into either account for 30 years at 7% real returns and you have about $750,000. What changes is how much of it you keep. If your tax rate is 12% today and 22% in retirement, the Roth comes out $75,000 or more ahead; at 32% today and 22% later, Traditional wins by about $75,000. At the same rate both ways, the two are identical. So the whole decision is one forecast, your tax rate in retirement against your rate today. Get it roughly right and the account picks itself.

The Core Difference: When You Pay Taxes

A Traditional IRA gives you a deduction in the year you contribute, lets the money compound tax-deferred, and taxes every withdrawal as ordinary income at that year's rate. A Roth IRA gives no deduction; in exchange, qualified withdrawals of contributions and decades of gains are tax-free, with no federal, state or capital gains tax.

The Break-Even Math: When Each Account Wins

The comparison that makes the Roth look like a landslide goes like this: $7,500 a year for 30 years at 7% grows to about $750,000, and withdrawing it from a Traditional IRA at a 22% effective rate costs $165,000 in tax, against $0 from a Roth. That comparison leaves out the tax the Roth paid on the way in. If your rate in retirement equals your rate today, the two accounts leave you with the same after-tax money.

Roth wins when your retirement rate will be higher than today's, which is common early in a career. Traditional wins when it will be lower, the usual pattern for high earners who retire somewhere cheaper or draw down gradually.

Real-Dollar Example: $250,000 Income, Age 52

A 52-year-old self-employed physician with no workplace plan, earning $250,000 (35% bracket), contributes $8,600 a year for 13 years. With no workplace plan the Traditional deduction is allowed at any income; at $250,000 the Roth side would go in through the Backdoor Roth below. She plans to retire at 65 on $120,000 a year from pensions and Social Security, which puts her in the 22% bracket.

2026 Income Limits and Eligibility

Roth contributions phase out by Modified Adjusted Gross Income (MAGI). Above the top of the range you cannot contribute directly, but the Backdoor Roth below still works.

Traditional IRA deductions phase out only if you or your spouse is covered by a workplace plan. Anyone with earned income can still make a non-deductible Traditional contribution, at any income.

Phase-Out Ranges for 2026

What Counts as MAGI

Start with Adjusted Gross Income from your Form 1040 and add back certain deductions and exclusions, such as student loan interest, the foreign earned income exclusion and adoption benefits. For most W-2 employees without unusual deductions, MAGI equals AGI.

Flexibility and Access Rules

When the tax math is close to even, these rules decide it, and almost all of them favor the Roth.

The Roth IRA 5-Year Rules

Two separate clocks apply. The first starts when you first fund any Roth IRA: earnings come out tax-free only once the account has existed for 5 tax years and you are 59 1/2.

The second applies to conversions. Each one has its own 5-year wait before the converted principal can come out penalty-free if you are under 59 1/2; after 59 1/2 it stops mattering. Either way, open a Roth with even $1 as early as you can so the first clock is running.

The Backdoor Roth Strategy

Above the Roth income limit, contribute to a non-deductible Traditional IRA and then convert it to a Roth. The conversion is taxed only on pre-tax money, which is zero if you hold no other Traditional IRA balances. As of 2026 the strategy is legal and permitted by the IRS.

The Pro-Rata Trap

The Backdoor Roth works cleanly only if you hold no pre-tax money in any Traditional, SEP or SIMPLE IRA. The IRS adds all of those balances together and taxes any conversion in proportion.

Mega Backdoor Roth (After-Tax 401k)

Some 401(k) plans accept after-tax contributions beyond the $24,500 employee limit, up to the total annual ceiling of $72,000 in 2026, employer contributions included. Those after-tax dollars can be converted to a Roth IRA or Roth 401(k), inside the plan or when you leave. That opens up to $47,500 a year of extra Roth money, less whatever your employer puts in, against the $7,500 IRA limit.

It needs two features in your plan documents: after-tax contributions, and in-service Roth conversions or in-service withdrawals. Without both it does not work, so check before you plan around it.

Tax-Bracket Decision Matrix

Using the same $7,500 a year for 30 years at 7% real (about $750,000 at the end), this is how the after-tax result moves with your bracket:

The Split Strategy

When the math is within $20,000 either way, split your contributions between Roth and Traditional. Congress can raise rates, change brackets or rewrite RMD rules, and money on both sides of the tax line is insurance against whichever it does.

The split suits mid-career earners in the 24-32% range who cannot predict their retirement income with any confidence. Half and half ($3,750 Roth, $3,750 Traditional) keeps the most options open.

Where to open your IRA

Most readers end up at one of two providers, because in an account held for 40 years the cost of holding your funds matters more than any feature. Fidelity's ZERO index funds charge 0.00%, the lowest long-run cost here; Schwab's fund expenses run slightly higher, but its branch network means an old 401(k) can be rolled over across a desk rather than on hold. Open at Fidelity unless a rollover is what brought you here (then Schwab), and go further down the list only for a specific reason: Robinhood's 3% match (it needs a paid Gold subscription and a five-year hold), a Vanguard target-date fund you never touch, or options inside the IRA at E*TRADE.

  1. Fidelity Investments: Most people opening a first IRA
  2. Charles Schwab: Rollovers you want help with in person
  3. Robinhood: The IRA contribution match
  4. Vanguard: Target-date funds you never touch again
  5. Betterment: Wanting the allocation decided for you
  6. E*TRADE: Options inside a retirement account

Key Takeaways