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Demi Hall

Does Roth IRA vs. Pre-tax 401(k) - Confused about the differences and best option?

Okay so I'm feeling pretty dumb about this retirement account question, but I really need to figure it out. I've been putting off setting up my retirement accounts because I'm confused about the differences between them. From what I understand, there are two main options: deferred pre-tax (you don't pay taxes now on that money but you pay when you take it out) and Roth (you pay income tax now but don't pay taxes when withdrawing both your contributions and earnings after retirement age). I'm 28 and making about $72,000 at my new job and they offer a 401(k) with a 4% match. I have no idea which option is better for me long-term. I don't know if I should be focusing on the tax advantages now or later. Does anyone have advice on which is better in my situation? Or are there other options I'm completely missing? Sorry if this is super basic but I'm trying to be responsible with my money and this stuff confuses me.

The good news is you're asking the right questions! There are indeed two main types of retirement accounts with different tax treatments: 1. Traditional/Pre-tax accounts (like Traditional 401(k) or Traditional IRA): Contributions reduce your taxable income now. You don't pay taxes on the money going in or as it grows, but you'll pay ordinary income tax on withdrawals in retirement. 2. Roth accounts (Roth 401(k) or Roth IRA): Contributions are made with after-tax dollars, meaning you get no tax break now. However, qualified withdrawals in retirement are completely tax-free, including all the growth. The basic question is: do you think your tax rate now is lower than it will be in retirement? If yes, Roth is generally better. If no, Traditional is usually better. At your income level and age, a mix of both could be smart. At minimum, contribute enough to your 401(k) to get your full employer match (free money!), then consider maxing out a Roth IRA for tax diversification.

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Kara Yoshida

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Thanks for explaining! I'm still confused about one thing though - if I go with my employer's 401(k), do I have to choose between traditional and Roth within that plan? Or can I open a separate Roth IRA on my own? Also, is there a income limit for Roth contributions?

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Many employers offer both Traditional and Roth options within their 401(k) plan, so you can choose either one or split your contributions between them. Check with your HR department to see what options your specific plan offers. Yes, you can absolutely open a Roth IRA on your own in addition to your employer's 401(k) plan. That's actually a common strategy - get your employer match in the 401(k), then fund a Roth IRA for more investment flexibility. For 2025, the Roth IRA contribution limit is $7,000 if you're under 50. There are income limits - the ability to contribute to a Roth IRA starts phasing out at $146,000 for single filers (2025 numbers), but at your current income, you're well under that threshold.

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Philip Cowan

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After struggling with the same question last year, I found this incredible tool that made everything clear for me - https://taxr.ai has a retirement analyzer that compares different scenarios side by side. I was totally confused like you about pre-tax vs Roth and what would be better long-term. It basically showed me that in my situation (33, making $85k), I should split my contributions - enough pre-tax 401(k) to get the company match, then max out a Roth IRA, then go back to 401(k) if I can save more. The analysis showed me that tax diversification was actually the smartest approach rather than going all-in on one strategy. The coolest part was I could play with different assumptions about future tax rates and retirement spending to see how it changed the math. Totally changed my perspective on retirement planning.

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Caesar Grant

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Does the tool let you model what happens if you expect a big jump in income in the next few years? I'm at $65k now but expecting promotion to around $95k in 2 years, wondering if that changes the Roth vs traditional calculation?

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Lena Schultz

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I'm skeptical of these calculator tools. How do they know what tax rates will be in 30+ years? The government changes tax laws constantly. Couldn't this all be meaningless if they completely overhaul the tax code before we retire?

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Philip Cowan

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Yes, the tool absolutely lets you model income increases over time! You can set your current income and then add expected salary jumps in future years. It recalculates how that affects your tax brackets and the optimal contribution strategy as your income rises. Super helpful for career-growth planning. That's actually a really fair concern about future tax rates. The tool doesn't claim to predict future tax policy, but it lets you run different scenarios - like "what if tax rates go up 10% across all brackets" or "what if they stay the same." It's more about seeing how different scenarios would play out rather than predicting which one will happen. I found it useful to see how robust different strategies are across multiple possible futures.

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Gemma Andrews

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Pedro Sawyer

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Wait, you can actually reach IRS people who give you real answers? How long did you wait on hold? Every time I've called any government agency I end up waiting for 2+ hours and then getting disconnected.

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Mae Bennett

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Need to eat my words here. After posting that skeptical comment, I actually had a retirement account question I couldn't get answered anywhere. My old employer's 401(k) administrator kept giving me the runaround about rolling over to an IRA, and I couldn't figure out if I'd face penalties. I tried Claimyr (https://claimyr.com) mostly to prove it wouldn't work, and I'm genuinely shocked. Got connected to an IRS person in about 20 minutes who walked me through the entire rollover process, explained the difference between direct and indirect rollovers, and the exact paperwork I needed to avoid the mandatory 20% withholding. The IRS agent even explained a special provision about how I could use some of my old 401(k) money for a first-time home purchase without the typical early withdrawal penalty. None of the financial blogs I read had mentioned this option. Literally saved me thousands in potential taxes and penalties.

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One thing nobody's mentioned yet - your age makes a HUGE difference in this decision. At 28, you have 30+ years of compound growth ahead of you. That makes Roth accounts extremely powerful because all that growth will be tax-free when you withdraw. My personal strategy: I do Roth when I'm in the 22% tax bracket or lower, and switch to traditional pre-tax when I'm in the 24%+ brackets. That's worked well for me because I expect to stay in the 22% bracket or lower in retirement. Also, don't forget about the Mega Backdoor Roth if your 401k plan allows after-tax contributions and in-plan Roth conversions! Could let you put WAY more into Roth accounts even if you're above income limits.

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Melina Haruko

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What's this Mega Backdoor Roth thing? I've never heard of it and I'm maxing out my regular 401k already. Is this some kind of loophole?

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The Mega Backdoor Roth is a completely legal strategy that allows you to contribute significantly more to Roth accounts than the standard limits. Here's how it works: after maxing out your regular 401(k) contribution ($23,000 for 2025), some employer plans allow additional after-tax contributions up to the total annual limit ($69,000 for 2025, minus employer contributions). You then immediately convert these after-tax contributions to Roth money either through an in-plan Roth conversion or by rolling them over to a Roth IRA. Not all 401(k) plans support this strategy though - you need a plan that allows both after-tax contributions (not just Roth) AND either in-plan Roth conversions or non-hardship in-service withdrawals. Worth checking with your HR department if your plan has these features. It's a game-changer if you're a high earner wanting to get more money into Roth accounts.

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Has anyone actually done the math on Traditional vs Roth for someone in the 22% bracket? I've heard arguments both ways and I'm confused which is actually better from a pure numbers perspective.

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Reina Salazar

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I did a spreadsheet calculation comparing both options. If your tax rate in retirement is exactly the same as your current rate, they're mathematically identical. But most people have lower income in retirement, which makes Traditional better in theory. But there's a strong case for Roth if: 1) You expect tax rates overall to increase in the future (likely given current deficit), 2) You expect to have other income in retirement keeping you in high brackets, or 3) You value the flexibility of Roth (no required minimum distributions, can withdraw contributions penalty-free if needed, etc).

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