Roth IRA Limit Calculator

Enter Your Roth IRA Details

Tax Year

Age at Year End

Filing Status

Modified AGI

Taxable Compensation

Other IRA Contributions

Roth Already Contributed

Planned New Roth Contribution

Formula Used

The calculator first finds the lesser of the annual IRA limit and taxable compensation. It then applies the Roth IRA MAGI phaseout.

Phaseout ratio = (MAGI - phaseout start) / phaseout width.

Reduced limit = compensation limited base - (compensation limited base × phaseout ratio).

The reduced limit is rounded up to the nearest ten dollars. If it is above zero but below two hundred dollars, the calculator uses two hundred dollars. Other IRA contributions and existing Roth deposits are then subtracted where applicable.

How to Use This Calculator

Select the tax year for the contribution.
Enter your age at the end of that tax year.
Choose your filing status carefully.
Enter modified AGI and taxable compensation.
Add any traditional IRA or existing Roth deposits.
Enter any planned new Roth contribution.
Press Calculate to review the allowed amount.
Use CSV or PDF download for record keeping.

Example Data Table

Year	Filing Status	Age	MAGI	Compensation	Estimated Roth Limit
2026	Single	45	$150,000	$80,000	$7,500
2026	Single	45	$160,500	$80,000	$3,750
2026	Married Filing Jointly	51	$247,000	$120,000	$4,300
2026	Married Filing Separately, Lived With Spouse	40	$10,000	$50,000	$0

Roth IRA Limit Planning Guide

A Roth IRA can be a strong savings tool because qualified withdrawals may be tax free. The yearly limit is not based on income alone. It also depends on age, taxable compensation, filing status, and other IRA deposits made for the same year.

Why the Limit Changes

The calculator starts with the annual IRA cap. It then compares that number with taxable compensation. A saver cannot contribute more than earned compensation for the year. Age matters because people who are age 50 or older receive a catch-up amount. The tool also checks modified adjusted gross income, often called MAGI.

Income Phaseout Logic

Roth IRA rules reduce the allowed amount when MAGI enters a phaseout range. The range is different for single filers, heads of household, joint filers, and married separate filers. Inside the range, the allowed contribution falls gradually. Above the top of the range, the regular direct Roth IRA contribution becomes zero.

Other IRA Deposits

Traditional IRA contributions share the same annual IRA cap. If you already added money to a traditional IRA, the remaining Roth room is smaller. Existing Roth deposits also reduce the amount still available. This helps show whether a planned deposit may create an excess contribution.

Practical Use

Use this estimate before sending money to a custodian. Enter careful MAGI and compensation figures. If your income is near a limit, review tax records before funding. Small changes can affect the final Roth room. The result can guide planning, but it should not replace personal tax advice.

Advanced Planning Notes

The calculator supports multiple tax years. This is helpful when making prior-year contributions before the filing deadline. It also shows the phaseout percent, base limit, compensation cap, remaining room, and possible excess amount. Save the CSV or PDF result for your records. Recalculate after bonuses, self-employment income, or deductions change. Couples should confirm filing status before relying on the answer. Married separate filers often face a very narrow income window, so extra care is useful. Keep copies of Forms W-2, Schedule C records, and any IRA confirmations. These records help support compensation, deposits, and corrections. They also make later tax reviews easier for you. Update entries before each final contribution decision.

FAQs

What is a Roth IRA limit?

It is the maximum amount you may contribute to a Roth IRA for a tax year. The final amount depends on age, taxable compensation, filing status, income phaseouts, and other IRA contributions.

Does age affect the Roth IRA limit?

Yes. People age 50 or older can usually use the catch-up limit. The calculator checks your age and applies the higher annual cap when allowed.

What income figure should I enter?

Enter modified adjusted gross income for Roth IRA purposes. This may differ from regular adjusted gross income. Review your tax details if you are near a phaseout range.

Why does taxable compensation matter?

Your IRA contribution cannot exceed taxable compensation for the year. If compensation is lower than the annual IRA cap, the calculator uses compensation as the starting limit.

Do traditional IRA contributions reduce Roth room?

Yes. Traditional IRA and Roth IRA contributions share one annual IRA limit. Amounts already placed in a traditional IRA reduce the Roth amount available for that year.

What happens during the phaseout range?

The allowed Roth IRA contribution gradually decreases. The calculator applies the phaseout formula, rounds the reduced limit up to the nearest ten dollars, and checks the minimum rule.

Can this calculator handle married separate filers?

Yes. It includes separate options for married filing separately based on whether you lived with your spouse during the year. That choice can strongly affect eligibility.

Is this tax advice?

No. This is an educational estimate. Confirm numbers with IRS guidance, your tax return, or a qualified tax professional before making final contribution decisions.