Roth vs Traditional Calculator

It comes down to one comparison: your tax rate now versus your expected tax rate in retirement. If you will be in a higher bracket later, Roth (pay tax now at the lower rate) wins. If lower later, Traditional wins. The catch most calculators hide: Traditional only keeps up if you actually invest the tax it saves you today - spend that money and Roth wins almost every time.

Traditional contributions are pre-tax - they lower your taxable income now, grow untaxed, and are taxed as ordinary income when you withdraw in retirement. Roth contributions are after-tax - no deduction today, but growth and qualified withdrawals are completely tax-free. Same annual limits, opposite tax timing. You are really betting on whether your future tax rate is higher or lower than today’s.

Because it is the only fair comparison. Putting $7,000 into a Traditional account costs you less out of pocket than $7,000 into a Roth, since the Traditional contribution cuts your tax bill today. If you invest that difference, Traditional stays competitive. If you spend it, you have quietly made your Roth contribution the bigger real commitment - which is exactly why Roth usually wins in the real world, where the tax refund gets spent.

It is the retirement tax rate at which Roth and Traditional end up equal. Above it, Roth wins; below it, Traditional wins. This calculator solves for it directly - so instead of guessing, you can ask a concrete question: "do I expect my retirement rate to be above or below this number?" Because the invested tax savings pay some capital-gains tax along the way, the break-even usually sits a little below your current rate.

The common advice - "young and low-earning, so pay the low tax now with Roth" - is usually right, but for a reason beyond tax rates: decades of tax-free compounding in a Roth is enormously valuable, and early-career earners are often in the lowest bracket they will ever see. Run your real numbers above; if your current bracket is well below where you expect to retire, the Roth edge is large.

Yes. You can split contributions between a Roth and a Traditional account in the same year, as long as your combined total stays under the annual IRS limit. Many people deliberately do both to hedge - it gives you tax-free and taxable buckets to draw from in retirement, which helps you control your taxable income year to year once you are withdrawing.

Historically employer match always landed in a pre-tax (Traditional) bucket even if your own contributions were Roth - so a Roth 401(k) saver often ends up with two buckets. SECURE 2.0 now lets employers offer Roth match, but adoption is uneven. Either way, the match is free money and does not count against your personal contribution limit; capture it first, then decide Roth vs Traditional for your own dollars.

Be realistic, not optimistic. Many retirees are in a similar or only slightly lower bracket than their working years once you count Social Security, pensions, and required minimum distributions stacking up. A reasonable default is your current rate minus a few points, but if you are a high earner now who will live modestly later, the drop can be larger. Try a range above and watch how close the result gets.

"Tax-free" is seductive but not automatically better - you paid that tax up front, at today’s rate. Roth wins when today’s rate is lower than your future rate; Traditional wins when it is higher. At equal rates the two are nearly identical, with Roth ahead by a hair because the Traditional side investment pays a little capital-gains tax. The tax-free headline matters most when you expect rates - yours or the country’s - to rise.

It compares marginal tax rates cleanly, but real retirement taxes have wrinkles it does not model: required minimum distributions pushing you into higher brackets, Medicare IRMAA surcharges, how withdrawals affect Social Security taxation, and moving to a different state. Roth accounts sidestep several of these (no RMDs, no bracket creep), which is a real thumb on the scale in Roth’s favor beyond the raw math here.