Formula Used
Base IRA limit = lesser of the age based annual IRA limit or taxable compensation.
Phase-out percentage = (MAGI - lower phase-out amount) / phase-out range.
Reduced Roth limit = base IRA limit - (base IRA limit × phase-out percentage).
The reduced Roth limit is rounded up to the nearest $10. If it is more than $0 but less than $200, it becomes $200.
Total Roth allowed = lesser of the MAGI adjusted Roth limit or base IRA limit minus traditional IRA deposits.
Remaining Roth room = total Roth allowed minus Roth IRA deposits already made.
Projected total = current Roth balance future value plus yearly allowed Roth funding future value.
How to Use This Calculator
- Select the tax year for the Roth IRA contribution.
- Choose the correct filing status.
- Enter your age at the end of that tax year.
- Add modified adjusted gross income and taxable compensation.
- Enter traditional and Roth IRA deposits already made.
- Add the planned Fidelity Roth IRA contribution.
- Use return and retirement fields for a simple projection.
- Press the calculate button and review the result above the form.
- Download the result as CSV or PDF for your records.
Example Data Table
| Tax Year |
Status |
Age |
MAGI |
Compensation |
Prior Traditional IRA |
Estimated Roth Allowed |
| 2026 |
Single |
35 |
$140,000 |
$100,000 |
$0 |
$7,500 |
| 2026 |
Single |
35 |
$160,000 |
$100,000 |
$0 |
$4,000 |
| 2026 |
Married filing jointly |
52 |
$247,000 |
$120,000 |
$0 |
$4,300 |
| 2026 |
MFS, lived with spouse |
45 |
$8,500 |
$80,000 |
$0 |
$1,130 |
Fidelity Roth IRA Contribution Planning
A Roth IRA can be simple, but the yearly limit depends on several facts. Age, taxable compensation, filing status, and modified adjusted gross income all matter. This calculator brings those details together in one view. It helps a saver estimate a direct Roth IRA contribution before sending money to an account.
Why MAGI Changes Eligibility
The Roth IRA income test uses modified adjusted gross income. When MAGI stays below the lower phase-out line, the full yearly amount may be allowed. When MAGI lands inside the phase-out range, the allowed amount drops step by step. When MAGI reaches the upper line, a direct Roth contribution is usually not available. Filing status controls the correct range, so it should be chosen carefully.
How Prior IRA Deposits Affect Room
The annual IRA cap applies across traditional IRAs and Roth IRAs together. A traditional IRA deposit can reduce the remaining Roth room. A Roth deposit already made also reduces the amount still available for the year. The calculator separates these entries so you can see total allowed Roth dollars and remaining space.
Using the Result With Fidelity
The result can help when planning a Fidelity Roth IRA contribution. It is not a tax filing tool. Use the number as a planning estimate, then compare it with your records and tax return. If income is close to a phase-out limit, review MAGI carefully. Small deductions or additions can change the final contribution room.
Planning Beyond This Year
The projection field gives a simple view of possible growth. It applies the expected return to your current balance and assumes the allowed annual Roth amount continues until retirement. Real markets will not move in a straight line. Contribution limits and income thresholds may also change. Still, the estimate shows why funding early and regularly can matter.
Smart Review Steps
Before contributing, confirm earned compensation for the year. Check all IRA deposits made at any custodian. Save the CSV or PDF result for your notes. If the planned amount is larger than the remaining room, adjust it before making the transfer online before final submission. For special cases, such as backdoor Roth steps, excess contributions, or amended income, ask a qualified tax professional.
FAQs
1. What does this calculator estimate?
It estimates the direct Roth IRA contribution allowed for a selected tax year. It checks age, compensation, filing status, MAGI, and prior IRA deposits.
2. Is this only for Fidelity accounts?
No. The math applies to Roth IRA contribution planning generally. The Fidelity name helps users planning a Fidelity Roth IRA deposit.
3. Does the IRA limit cover all IRAs?
Yes. The annual IRA contribution cap applies across traditional and Roth IRAs together. This calculator subtracts traditional IRA deposits.
4. Why does MAGI reduce my Roth contribution?
Roth IRA rules phase out direct contributions at higher income levels. The calculator applies the selected year and filing status range.
5. What happens if I enter too large a planned contribution?
The result shows the accepted planned amount and possible excess. Reduce the transfer before contributing if the excess amount is positive.
6. Does the calculator handle catch-up contributions?
Yes. If the age entered is 50 or older, the calculator uses the age 50 plus IRA limit for that tax year.
7. Is the projection guaranteed?
No. The projection is only an estimate. Markets change, returns vary, and future contribution limits may increase or decrease.
8. Should I ask a tax professional?
Yes, for complex cases. Get advice for backdoor Roth steps, excess contributions, amended income, recharacterizations, or unusual filing situations.