VOO in a Roth IRA vs. Traditional IRA vs. Taxable Account

The short answer

There's no single best account for VOO — a Roth IRA, a traditional IRA or 401(k), and a regular taxable brokerage account each tax VOO's dividends and gains differently, and each comes with different rules about when you can take the money out. The fund itself doesn't change; what changes is how much of its growth you actually keep, and when you can access it. This article walks through the real differences, a worked example, and where to check current numbers rather than trusting a fixed figure.

This is educational information, not personalized tax or financial advice — account rules depend on your income, filing status, and overall situation, so confirm specifics with a tax professional before making decisions.

How each account type actually differs

• Roth IRA. You contribute money that's already been taxed. Inside the account, VOO's dividends and price growth aren't taxed year to year, and qualified withdrawals in retirement are generally tax-free. The trade-off: annual contribution limits (see below), income limits that can restrict who's eligible to contribute directly, and generally restricted access to earnings before retirement age without a penalty.
• Traditional IRA or 401(k). Contributions may reduce your taxable income in the year you make them (rules vary by plan and income), and the money grows tax-deferred — no yearly tax on VOO's dividends. You generally pay ordinary income tax on withdrawals in retirement, and early withdrawals before the account's allowed age typically face a penalty on top of regular tax.
• Taxable brokerage account. No contribution limit and no withdrawal restrictions — you can add or take out money anytime. The cost is that VOO's dividends are generally taxable in the year they're paid, whether or not you reinvest them, and selling shares at a gain generally triggers capital gains tax.

For background on how VOO's dividends actually work before taxes enter the picture, see our VOO dividend history and yield article.

2026 IRA contribution limits

The IRS set the 2026 IRA contribution limit at $7,500, with an additional $1,100 catch-up contribution allowed for investors age 50 and over — a combined $8,600 limit for that group. This limit applies across your traditional and Roth IRA contributions combined, not separately to each. Roth IRA eligibility also phases out at higher incomes: for 2026, the phase-out range is $153,000–$168,000 for single filers and $242,000–$252,000 for married couples filing jointly, according to Fidelity's and Vanguard's published 2026 figures, which reflect the IRS's own limits (IRS, Nov. 13, 2025). These figures are adjusted periodically — verify the current limits directly on IRS.gov before planning contributions.

A worked example: $500/month in each account

To see why the account matters, here's the same hypothetical plan — $500 invested every month for 20 years at an assumed 7% annual return, with no starting lump sum — computed with our calculator's standard compounding math. This is a chosen assumption for illustration, not a historical or guaranteed VOO return.

Under these assumptions, the plan grows to about $260,463, made up of $120,000 in total contributions and roughly $140,463 in estimated growth. In a Roth IRA, that growth is generally never taxed again if withdrawn under the account's rules. In a traditional IRA, withdrawals in retirement are generally taxed as ordinary income on the full withdrawn amount, contributions and growth together. In a taxable account, you'd generally owe tax on dividends paid along the way each year, and on any gain when shares are eventually sold — reducing the effective amount you keep compared to the account types where growth isn't taxed annually, though the exact impact depends on your tax rate and how long you hold.

What doesn't change no matter the account

VOO itself is identical regardless of where you hold it — the same fund, the same underlying companies, the same expense ratio. Opening a Roth IRA doesn't make VOO a different or better investment; it changes the tax treatment wrapped around it. That matters for how much of the growth you keep, but it doesn't change the fund's actual behavior in the market, which still moves with the S&P 500 and can lose value in any given period regardless of account type. If you're still deciding whether VOO itself is the right fund before worrying about which account to use, start with what VOO actually is, and see how to actually buy it once you've picked an account.

Investing in VOO from outside the US

VOO is priced and traded in US dollars, so investors outside the US need to account for currency conversion costs and their own brokerage's access to US-listed ETFs. Account types and tax treatment described above are specific to US retirement accounts and don't apply directly elsewhere — for example, some Canadian investors hold US-listed ETFs like VOO inside a TFSA or RRSP, but the tax rules governing those accounts, including any US withholding tax on dividends, are different from the US rules covered in this article and aren't addressed here. If you're investing from outside the US, confirm the relevant account and tax rules with a professional licensed in your own country rather than applying anything above by default.