Project traditional IRA growth and estimated after-tax value at retirement.
This tool provides estimates for informational purposes only. It is not a substitute for professional advice. Individual results vary based on your inputs and assumptions, so review important decisions with a qualified professional.
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An Individual Retirement Account (IRA) is one of the most powerful tax-advantaged savings vehicles available to American workers. With $13+ trillion held in IRAs across the United States, understanding how to maximise your IRA contributions, choose between Traditional and Roth IRA, and project your retirement balance is critical for long-term financial security. This complete guide covers contribution limits, deductibility rules, growth projections, withdrawal rules, and how the IRA compares to UK equivalents.
The fundamental distinction between the two main IRA types is when you pay taxes:
| Feature | Traditional IRA | Roth IRA |
|---|---|---|
| Contributions | Pre-tax (potentially deductible) | After-tax (not deductible) |
| Growth | Tax-deferred | Tax-free |
| Withdrawals in retirement | Taxed as ordinary income | Tax-free (if qualified) |
| Required Minimum Distributions | Yes, starting at age 73 | No (during owner's lifetime) |
| Income limits for contributions | No limit (deductibility has limits) | Phase-out: $146k–$161k single; $230k–$240k married (2024) |
For the 2024 tax year:
This limit is per person and applies to the combined total of all traditional and Roth IRAs. If you have both a traditional IRA and a Roth IRA, your combined contributions cannot exceed $7,000/$8,000. The limit is indexed to inflation and increases periodically.
Whether your traditional IRA contribution is tax-deductible depends on your income and whether you (or your spouse) are covered by a workplace retirement plan:
| Filing Status | Covered by Workplace Plan? | Deduction Phase-out (2024 MAGI) |
|---|---|---|
| Single | Yes | $77,000–$87,000 |
| Married Filing Jointly | Yes (at least one) | $123,000–$143,000 |
| Married Filing Jointly | No (spouse is) | $230,000–$240,000 |
| Single or MFJ | No | Always fully deductible |
The real power of an IRA is compound growth over decades. Consider these projections assuming 7% average annual return (a conservative stock market estimate):
| Starting Age | Annual Contribution | Value at Age 65 | Total Contributed |
|---|---|---|---|
| 25 | $7,000 | $1,479,000 | $280,000 |
| 35 | $7,000 | $735,000 | $210,000 |
| 45 | $7,000 | $323,000 | $140,000 |
Starting at 25 vs 45 yields over 4× more at retirement for the same annual contribution — demonstrating why starting early is the single most impactful IRA decision.
Traditional IRA holders must begin taking Required Minimum Distributions (RMDs) at age 73 (under SECURE 2.0 Act, effective 2023). The RMD is calculated by dividing the account balance (as of December 31 of the prior year) by the IRS Uniform Lifetime Table life expectancy factor. Failing to take an RMD triggers a penalty of 25% of the shortfall (reduced from 50% under SECURE 2.0, and further reduced to 10% if corrected promptly). Roth IRAs are not subject to RMDs during the original owner's lifetime.
Withdrawals from a traditional IRA before age 59½ are subject to:
Exceptions to the 10% penalty include: first-time home purchase (up to $10,000 lifetime), higher education expenses, substantially equal periodic payments (SEPP/72(t)), disability, death, health insurance premiums while unemployed, and qualified disaster distributions.
When you leave a job, you can roll your 401(k) or 403(b) into a traditional IRA without triggering taxes or penalties. This is called a rollover. Direct rollovers (institution to institution) are always tax-free. Indirect rollovers (you receive the check) must be completed within 60 days and you can only do one per 12-month period per IRA. Rolling a traditional 401(k) to a Roth IRA is a taxable conversion — you owe income tax on the converted amount but future growth is tax-free.
Even if one spouse has no earned income, they can contribute to a spousal IRA based on the working spouse's earned income. This allows a couple where one partner stays home to still build $7,000/$8,000 per year in tax-advantaged retirement savings.
High earners above the Roth IRA income limits ($161,000 single, $240,000 married for 2024) can use the backdoor Roth strategy: contribute non-deductible funds to a traditional IRA, then immediately convert to a Roth IRA. Because the contribution was after-tax, the conversion triggers minimal tax if the account had no pre-existing pre-tax funds (beware the "pro-rata rule" if you have other traditional IRA balances).
The closest UK equivalents to IRAs are:
The 2024 IRA contribution limit is $7,000 for those under 50, and $8,000 for those 50 or older (including a $1,000 catch-up contribution). This applies to the combined total of all traditional and Roth IRAs you hold.
Traditional IRA: contributions may be tax-deductible; growth is tax-deferred; withdrawals in retirement are taxed as ordinary income; RMDs required at age 73. Roth IRA: contributions are after-tax (not deductible); growth is tax-free; qualified withdrawals are completely tax-free; no RMDs during the owner's lifetime.
It depends on your income and whether you are covered by a workplace plan. If you are single with no workplace plan, the contribution is always deductible. Single with a workplace plan: phase-out begins at $77,000 MAGI (2024). Married filing jointly with a workplace plan: phase-out $123,000–$143,000 MAGI.
You must begin taking Required Minimum Distributions (RMDs) at age 73, under the SECURE 2.0 Act. The RMD amount is calculated by dividing your December 31 account balance by your IRS Uniform Lifetime Table life expectancy factor. Missing an RMD triggers a 25% penalty on the shortfall.
Early withdrawals (before 59½) are subject to ordinary income tax plus a 10% early withdrawal penalty. Exceptions include: first-time home purchase (up to $10,000 lifetime), higher education expenses, disability, health insurance while unemployed, and substantially equal periodic payments (72(t) rule).
A rollover IRA receives funds transferred from an employer-sponsored plan like a 401(k) when you leave a job. Direct rollovers (institution to institution) are tax-free. You can roll a traditional 401(k) into a traditional IRA tax-free, or into a Roth IRA as a taxable conversion.
Yes. A spousal IRA allows a non-working spouse to contribute up to $7,000/$8,000 per year based on the working spouse's earned income, provided the couple files a joint tax return. This enables two IRA contributions per year for couples even when only one partner works.
The SIPP (Self-Invested Personal Pension) works like a traditional IRA — pre-tax contributions, tax-deferred growth, taxable withdrawals. The Stocks and Shares ISA works like a Roth IRA — after-tax contributions, completely tax-free growth and withdrawals, and no required distributions.