The Roth vs Traditional IRA question really comes down to this: do you want to pay the IRS today, or do you want to pay them tomorrow?

I sit across from high-earning clients every week who suddenly realize they need to take retirement planning seriously. The financial industry throws around terms like "Traditional," "Roth," "Non-Deductible," and "Backdoor" until people give up and just guess.

Do not guess. The entire system boils down to that single question of when you pay the tax:

• Traditional IRA = Pre-Tax. You get a tax deduction today, but you pay taxes when you pull the money out in retirement.
• Roth IRA = Post-Tax. You pay taxes today, but the money grows tax-free forever, and you pay zero taxes when you pull it out.

What is a Traditional IRA (Pre-Tax)?

A Traditional IRA gives you an upfront tax deduction on your contributions today, but you must pay income taxes when you withdraw the money in retirement.

The Traditional IRA gives you instant gratification. You contribute money, and the IRS lets you deduct that exact amount from your taxable income for the year.

This usually becomes an issue right after you get a major promotion. The IRS does not let high earners double-dip. If you have a retirement plan at work, your ability to take the IRA deduction phases out based on your income.

• For Single Filers (2026): Your deduction begins phasing out at $81,000 and disappears completely once you earn $91,000.
• For Married Filing Jointly (2026): Your deduction begins phasing out at $129,000 and disappears at $149,000.

What is the non-deductible Traditional IRA trap?

The non-deductible trap happens when you earn too much to deduct your Traditional IRA contribution but fail to file Form 8606, causing the IRS to tax that money a second time when you withdraw it in retirement.

Suppose you clear $150,000 this year and put $7,500 into a Traditional IRA. Because your paycheck crossed the IRS limit, you get zero tax break today.

When you file your return, you must include Form 8606 to prove you already paid taxes on that $7,500.

If your CPA forgets that form, the IRS computers log your money as untaxed. Thirty years later, you pull that cash out to pay a medical bill and the IRS taxes it a second time. I despise double taxation. A massive part of our tax planning involves reviewing past returns specifically to find and fix missing 8606 forms. A competent CPA handles this complexity behind the scenes so you never pay tax on the same dollar twice.

What is a Roth IRA (Post-Tax)?

A Roth IRA provides no upfront tax deduction because you contribute post-tax money, but in exchange, the money grows completely tax-free and you pay zero taxes when you withdraw it in retirement.

I consider the Roth IRA the ultimate wealth-building tool because it permanently eliminates the IRS from your retirement equation.

You do not get a tax deduction when you fund a Roth IRA. You pay your taxes upfront. But in exchange, the money grows completely tax-free. When you turn 65 and pull out a million dollars, you owe absolutely nothing to the government.

Like the Traditional IRA, the Roth has income limits. In 2026, Single filers phase out starting at $153,000, and Married couples phase out at $242,000. If you earn more than that, you cannot contribute directly to a Roth IRA.

Roth vs Traditional IRA: When should you use which?

You should choose between a Roth and Traditional IRA by comparing your tax bracket today against your expected tax bracket in retirement.

To make this decision, I always compare your tax bracket today against what we expect your tax bracket to be when you retire.

Let's look at a realistic example for a high-earning professional in a high-tax state like California or New York. Because of their heavy salary and state taxes, they currently sit in the 32% or 35% federal tax bracket. When they retire, they plan to have zero earned income, potentially moving to a tax-free state like Nevada, dropping them down into the 12% or 22% bracket.

• The Smart Move: They should aggressively fund a Pre-Tax 401(k). By taking the deduction today, they avoid paying a 35% tax rate on that money. When they withdraw it in retirement, they only pay 12%. They legally pocket a massive tax spread. (They might even use the gap years to do strategic Roth conversions before RMDs hit).

Now, suppose you are a 26-year-old making an entry-level salary. You sit in the 12% tax bracket, but you plan to be a high earner later in life.

• The Smart Move: You should aggressively fund a Roth (Post-Tax) IRA. You lock in your low 12% tax rate today. When you retire wealthy, you avoid the 32% tax bracket entirely because your withdrawals are tax-free.

When is a Backdoor Roth the only option?

A Backdoor Roth IRA is mathematically superior for high earners who are banned from taking a Traditional IRA tax deduction, because zero taxes on Roth growth is always better than paying capital gains in a taxable brokerage account.

There is one massive exception to this "tax bracket" rule: The Backdoor Roth IRA.

If you are a high earner covered by a workplace plan, the IRS bans you from taking a tax deduction on a Traditional IRA contribution anyway. Because you are forced to use post-tax money regardless, the "lower bracket in retirement" math no longer applies.

If you are stuck using post-tax money, your only choices are a taxable brokerage account (where you pay 15% or 20% capital gains on growth) or a Backdoor Roth (where you pay 0% on growth). Zero is always better. As long as you do not fall into the pro-rata trap or get snagged by a reverse rollover, a Backdoor Roth is mathematically superior for high earners, no matter what bracket they retire in.

What should you do before you fund an account?

Before you fund any retirement account this year, verify your Modified Adjusted Gross Income (MAGI) and determine whether a deduction actually benefits you. If your income sits too high, you need to explore advanced strategies like the Mega Backdoor Roth or Spousal Backdoor Roth.

If you want a second opinion on your retirement strategy, or need a strategist to model the math before you make a move, book a remote consult with our office. Stop guessing with your taxes.