IRA Terminology: What the Account Labels Actually Mean
An account, not an investment
The most useful thing to understand about an IRA is what it is not: it is not an investment. An individual retirement arrangement is a tax-advantaged account — a container — and what grows inside it is whatever you put there: mutual funds, ETFs, individual securities, cash. The container determines the tax treatment; the contents determine the investment behavior. The IRS's IRA overview is the primary source for the container's rules, and the SEC's mutual funds guide covers the most common thing people hold inside one.
The labels you'll encounter
- Traditional IRA. Contributions may be tax-deductible depending on your circumstances, and the account grows tax-deferred; withdrawals in retirement are generally taxed as income. Rules about deductibility and withdrawal timing are detailed and depend on your situation — the IRS pages are the authoritative reference.
- Roth IRA. Contributions are made with money that has already been taxed; qualified withdrawals in retirement are generally tax-free. Eligibility to contribute phases out above certain income levels, which the IRS publishes and updates.
- SEP IRA and SIMPLE IRA. Employer-connected variants used mainly by small businesses and self-employed people, with their own contribution structures.
- Rollover. Moving money from a workplace plan (like a 401(k)) into an IRA, or between IRAs, under specific procedures that preserve the tax-advantaged status when followed correctly.
Terms that do real work
- Custodian. The financial institution that holds the account — a brokerage, bank, or fund company. The custodian is where you open the IRA; the IRS sets the rules it operates under.
- Contribution limit. The maximum you may add per year, set by law and adjusted periodically. Because the figure changes, no static article should be your source for it — check the current limits on the IRS site directly.
- Required minimum distributions (RMDs). Rules requiring withdrawals from certain account types beginning at a specified age. Which accounts they apply to, and when, is defined by the IRS.
- Early-distribution rules. Withdrawals before retirement age can carry additional taxes, with specific exceptions defined in law.
Reading an IRA like a fund investor
Because an IRA is a container, everything on this site about its likely contents still applies inside it. A fund held in an IRA has the same expense ratio it would have in a taxable account, and the SEC's fee bulletin applies just as fully. The tax wrapper changes when and how gains are taxed; it does not change what the investments cost to own.
What this page deliberately doesn't do
Whether a traditional or Roth structure suits you, how much to contribute, when to roll over a workplace plan — those are tax and financial decisions that depend on your income, age, employer plan, and state, and getting them wrong has real costs. That is precisely why they belong with the primary sources and professionals: the IRS pages for the rules as written, and a licensed tax or financial professional for how the rules apply to you. This page's job ends where those questions begin — its goal is that when you have that conversation, every term in it is one you already understand.