Does this calculator enforce Roth IRA income phase-outs?

Yes, the tool reduces or disallows contributions when your modified AGI exceeds the IRS thresholds for the selected filing status and tax year.

How are contributions prorated in the phase-out range?

The maximum annual contribution is reduced proportionally across the phase-out band in line with IRS guidance.

Can I include catch-up contributions?

Yes, the catch-up allowance is automatically included for ages 50 or older based on the selected tax year.

Roth IRA Calculator

Check Roth IRA income eligibility, calculate allowable contributions, and project future tax-free balances. Contribution limits are based on the selected IRS tax year.

Author: Ugo Candido Reviewed by: Retirement Planning Editor Last updated: Category: Finance → Retirement

Current age *

Target retirement age *

Filing status *

Modified AGI (£) *

Tax year

Current Roth IRA balance (£)

Desired annual contribution (£)

Expected annual return (%) *

Inflation assumption (%)

Results (today’s £)

Years to retirement—

Allowable annual contribution£0

Monthly contribution applied£0

Projected balance (nominal)£0

Projected balance (real)£0

Total contributions£0

Total earnings£0

Contribution reduction note—

Tax year: 2024 Status: Single Return: 7.0%

Methodology

The calculator applies IRS Roth IRA contribution limits and phase-out ranges for the selected tax year. If your modified AGI exceeds the upper threshold, the allowable contribution is reduced to zero.

Phase-Out Thresholds (2024)

Single: £138,000 – £153,000
Married filing jointly: £218,000 – £228,000
Married filing separately: £0 – £10,000

How to Use

Enter your age, modified AGI, and filing status.
Select the tax year and planned contribution.
Provide expected annual return and inflation for real-value projections.
Review allowed contributions, projected balance, and earnings.