Roth IRA Calculator

Check Roth IRA contribution eligibility and project future value with 2023-2024 IRS income phase-out limits.

Full original guide (expanded)

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

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

  1. Enter your age, modified AGI, and filing status.
  2. Select the tax year and planned contribution.
  3. Provide expected annual return and inflation for real-value projections.
  4. Review allowed contributions, projected balance, and earnings.
Audit: Needs review
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Note: This page needs review to confirm formulas and sources.
No formulas provided in audit spec.
Variables and units
  • T = property tax (annual or monthly depending on input) (currency)
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verification pending · Last code update: 2026-01-19
Formulas

(Formulas preserved from original page content, if present.)

Version 0.1.0-draft
Citations

Add authoritative sources relevant to this calculator (standards bodies, manuals, official docs).

Changelog
  • 0.1.0-draft — 2026-01-19: Initial draft (review required).