Spousal IRA Calculator: What Contributions for a Non-Working Spouse Build
Work out what a spousal IRA grows to from a starting balance plus monthly contributions — the account that lets a non-working or low-earning spouse keep building retirement savings using the working spouse's income.
Adjust the inputs and select Calculate for a full breakdown.
Year-by-year growth schedule
Compare Common Scenarios
How the numbers shift across typical situations for this calculator:
| Scenario | Future value | Total contributions | Total interest earned |
|---|---|---|---|
| $10k + $500/mo · 6% · 20yr | $264,122.49 | $130,000.00 | $134,122.49 |
| $0 + $583/mo · 7% · 25yr (near max) | $472,271.80 | $174,900.00 | $297,371.80 |
| $25k + $400/mo · 6% · 15yr | $177,679.82 | $97,000.00 | $80,679.82 |
| $5k + $300/mo · 7% · 30yr | $406,573.79 | $113,000.00 | $293,573.79 |
How This Calculator Works
Enter the starting balance, the monthly contribution, the return you expect, and the years invested. The calculator compounds the balance monthly and shows the ending value and how much is growth. The spousal IRA is a regular IRA (traditional or Roth) funded on behalf of a spouse with little or no earned income.
The Formula
Future Value with Regular Contributions
P = starting amount, PMT = monthly contribution, r = monthly rate (annual ÷ 12), n = number of months
Worked Example
A $10,000 starting balance plus $500 a month for 20 years at 6% grows to about $264,122 — with roughly $134,122 of that being investment growth. A spousal IRA solves a real gap: normally IRA contributions require earned income, which would shut out a stay-at-home spouse. The spousal IRA exception lets a working spouse fund an IRA in the non-working spouse's name (the couple must file jointly), so both partners keep building retirement savings and the household doesn't lose years of compounding for one spouse.
Key Insight
The spousal IRA is one of the most valuable and underused retirement tools for single-income or uneven-income households, because it prevents a multi-year gap in one partner's retirement savings — a gap that compounding makes expensive. Normally you need earned income to contribute to an IRA; the spousal IRA exception lets a working spouse contribute to an account owned by the non-working (or lower-earning) spouse, as long as the couple files jointly and the working spouse's earned income covers the total contributions. Key points: it's the non-working spouse's own account (their name, their control), it can be traditional (tax-deductible now, taxed in retirement) or Roth (after-tax now, tax-free later, subject to income limits), and each spouse's contribution is governed by the standard annual IRA limit plus catch-up for those 50+. The strategic value is twofold: it preserves the lower-earning spouse's retirement independence and contribution history, and it effectively doubles a household's IRA contribution room versus funding only the working spouse's account. This calculator doesn't enforce the contribution limits, so confirm your monthly amount stays within them, and remember the choice of traditional vs. Roth depends on your current vs. expected retirement tax rates. For a stay-at-home parent or a spouse between careers, funding a spousal IRA keeps compounding working for both partners rather than pausing it for one.
Frequently Asked Questions
How is spousal IRA growth calculated?
The starting balance and each monthly contribution compound at the expected return (annual rate ÷ 12 per month). $10,000 plus $500/month for 20 years at 6% grows to about $264,122, with roughly $134,122 of that being growth.
What is a spousal IRA?
A regular IRA (traditional or Roth) funded on behalf of a spouse with little or no earned income. Normally IRA contributions require earned income; the spousal IRA exception lets a working spouse contribute for a non-working spouse, provided the couple files jointly and the working spouse's income covers the contributions.
Who owns and controls the spousal IRA?
The non-working spouse — it's their own account in their name, which they control. That's a key benefit: it preserves the lower-earning spouse's retirement savings and independence, rather than relying solely on the working spouse's accounts. The working spouse simply provides the funding.
Traditional or Roth spousal IRA?
Either is allowed. Traditional contributions may be tax-deductible now and are taxed in retirement; Roth contributions are after-tax now and tax-free in retirement (subject to income limits). The choice depends on your current versus expected retirement tax rates — the same decision as any IRA.
What are the contribution limits?
Each spouse's contribution is governed by the standard annual IRA limit, plus a catch-up amount for those 50 and older, and the working spouse's earned income must cover the total contributed to both accounts. This calculator doesn't enforce the limits, so confirm your monthly amount stays within the current annual cap.
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Data Sources & Benchmarks
This calculator draws on 1 independent, dated source. The starting values for expected annual return are taken from the benchmarks below and refresh whenever the snapshots are updated.
Methodology & Review
The future value compounds a starting balance and a fixed monthly contribution at the annual return, compounded monthly. It assumes deposits at month end and a constant return; it ignores taxes, fees, and IRS contribution limits (which this calculator does not enforce).
Written by Ugo Candido · Last updated May 22, 2026.