Why this Roth IRA tool exists
We built this calculator to help you visualize the long-term impact of tax-free compounding. Unlike a traditional IRA or a standard brokerage account, a Roth IRA allows your earnings to grow without being taxed when you withdraw them in retirement. This tool provides a clear side-by-side view of how consistent contributions, paired with market growth, build a significant tax-free nest egg over several decades.
When should you use this tool?
- Annual Planning: Use it at the start of the year to decide how much to contribute monthly to hit the 2025 IRS limits ($7,000 or $8,000).
- Career Changes: If you receive a raise, check how increasing your contributions could shorten your path to retirement.
- Comparing Accounts: Use the "Marginal Tax Rate" field to see exactly how much money you might lose to taxes if you invested in a taxable account instead of a Roth IRA.
How the tool works
This calculator applies a standard compound interest formula to your current balance and future contributions. If you select "Annual" frequency, growth is calculated once per year. Selecting "Monthly" applies growth more granularly, reflecting a more realistic scenario for those who contribute from every paycheck. The "Tax Saved" estimate calculates what you would have paid in taxes on your total interest earned, assuming your specified tax rate would apply in a taxable environment.
Limitations & Accuracy
While this tool is mathematically precise, it makes certain assumptions. It assumes a fixed annual rate of return, whereas real-world markets fluctuate. It does not account for inflation, which may affect the purchasing power of your final balance. Additionally, it does not factor in specific state taxes or the 2025 income phase-out limits, which may prevent high earners from contributing directly to a Roth IRA.
Complete Guide to Roth IRAs in 2025: Rules and Benefits
Retirement planning is a critical financial task. Among the tools available to US taxpayers, the Roth IRA (Individual Retirement Account) is a unique vehicle for building wealth. Because you pay taxes on contributions now, your withdrawals in retirement are 100% tax-free. This protects you from the risk of future tax rate increases.
1. 2025 Roth IRA Contribution Limits
The IRS adjusts limits to account for inflation. For the 2025 tax year, the maximum allowed contribution is slightly higher than in previous years.
| Category |
2025 Limit |
Notes |
| Under Age 50 |
$7,000 |
Maximum standard contribution. |
| Age 50 and Older |
$8,000 |
Includes a $1,000 catch-up contribution. |
2. Income Eligibility (MAGI) for 2025
Your ability to contribute is based on your Modified Adjusted Gross Income (MAGI). If you earn more than these thresholds, your contribution limit may be reduced or eliminated.
For Single Filers & Heads of Household:
- Full Contribution: MAGI under $150,000.
- Partial Contribution: MAGI between $150,000 and $165,000.
- No Contribution: MAGI of $165,000 or higher.
For Married Couples Filing Jointly:
- Full Contribution: MAGI under $236,000.
- Partial Contribution: MAGI between $236,000 and $246,000.
- No Contribution: MAGI of $246,000 or higher.
3. Roth IRA vs. Traditional IRA
The choice usually depends on whether you think your tax rate will be higher now or in the future.
| Feature |
Roth IRA |
Traditional IRA |
| Tax Timing |
Pay taxes now. |
Pay taxes later. |
| RMDs |
No required withdrawals. |
Must withdraw at age 73. |
| Best For... |
Younger earners or tax-increase hedges. |
High earners needing an immediate deduction. |
4. Common Withdrawal Rules
You can always withdraw your original contributions without penalty. However, to withdraw earnings tax-free, you must be 59½ years old and the account must have been open for at least five tax years. Exceptions exist for first-time home purchases (up to $10,000) and certain education or medical expenses.
Roth IRA Frequently Asked Questions
Can I contribute to a Roth IRA if I have no earned income?
Generally, no. You must have taxable compensation to contribute. However, a non-working spouse can contribute to a "Spousal Roth IRA" if the other spouse has sufficient earned income and they file a joint tax return.
What is the deadline for 2025 contributions?
You have until the tax filing deadline to fund your account for the 2025 tax year. This is typically April 15, 2026. This extra time allows you to verify your exact MAGI before committing the funds.
Can I have a Roth IRA and a 401(k) at the same time?
Yes. You can contribute to both an employer-sponsored plan like a 401(k) and a personal Roth IRA. The contribution limits for each are separate, allowing for a higher total savings rate.
What happens if I contribute too much to my Roth IRA?
If you exceed the IRS limits, you may face a 6% excise tax on the excess amount for every year it remains in the account. You should contact your financial institution to perform a "removal of excess" before the tax filing deadline to avoid this penalty.
Is the money in my Roth IRA automatically invested?
No. A Roth IRA is an account type, not an investment itself. Once you deposit money, you must choose how to invest it in stocks, bonds, ETFs, or mutual funds. If left uninvested, it will sit in a cash settlement fund and likely earn very little interest.
Use the calculator above to plan your path toward a tax-free retirement. Consistency and time are the most valuable assets in your financial journey.
