A Roth IRA is an individual retirement account funded with money you've already paid income tax on. In exchange for giving up an upfront deduction, every dollar of investment growth — and every withdrawal you make after age 59½ — comes out completely tax-free.
Why the "Pay Tax Now, Never Again" Trade-Off Works
The core idea behind a Roth IRA is simple: you contribute after-tax dollars today, and in exchange the IRS never touches the account again. That matters enormously if you expect to be in a similar or higher tax bracket in retirement, or if you simply want decades of compounding to happen without a future tax bill attached to it. Compare that to a traditional IRA or 401(k), where you get a deduction today but owe ordinary income tax on every dollar you withdraw later — including all the growth.
Roth IRAs are opened through a brokerage, not an employer, so you choose your own investments — index funds, ETFs, individual stocks, or bonds. There's no employer match involved (that's a 401(k) feature), but you get far more control over fees and fund selection.
Worked Example
Say a 30-year-old contributes the full $7,000/year limit to a Roth IRA every year until age 65 (35 years), earning an average 8% annual return.
| Milestone | Detail | Value |
|---|---|---|
| Total contributed | $7,000 × 35 years | $245,000 |
| Balance at 65 (8% avg return) | Future value of annuity | ≈ $1,353,000 |
| Tax owed on withdrawal | Because it's a Roth | $0 |
In a traditional IRA with the same contributions and growth, that same $1,353,000 balance would owe income tax on every withdrawal — potentially $200,000-$350,000 or more over retirement, depending on tax brackets at the time. The Roth's tax-free status is the entire point.
Key Rules to Know
- Contribution limit: $7,000/year for 2026 ($8,000 if 50+), and it must come from earned income.
- Income limits apply. High earners may be phased out of direct contributions and need a "backdoor Roth" strategy instead.
- 5-year rule. The account must be open at least 5 years before earnings can be withdrawn tax-free, even after age 59½.
- No required minimum distributions (RMDs). Unlike traditional IRAs, you're never forced to withdraw money at a certain age.