How to Calculate the Spousal IRA Contribution for a Non-Working Spouse

Key Takeaways

A non-working spouse can contribute up to $7,000 to a spousal IRA in 2025, or $8,000 if age 50 or older, provided the working spouse has sufficient earned income to cover both contributions.
Couples who skip the spousal IRA lose up to $7,000 per year in tax-advantaged compounding space. Over 20 years at a 7% annual return, that omission costs approximately $271,000 in potential portfolio value.
The correct approach: file jointly, confirm combined earned income meets or exceeds both contribution amounts, then open and fund a separate traditional or Roth IRA in the non-working spouse's name.
Tool: Run your spousal IRA contribution numbers with the CalcMoney Retirement Calculator →

Find and Roll Over Your Old 401(k)s

Capitalize finds old 401(k)s and handles the entire rollover for you, free, with zero paperwork on your end.

Interactive Calculator

Full screen

Loading Calculator

calcmoney.io/calculatorsOpen full screen

The Spousal IRA Rule Gives Non-Working Spouses Full Contribution Access

The IRS allows a non-working spouse to contribute to their own IRA based on the working spouse's earned income, provided the couple files a joint federal tax return. This is not a joint account. The spousal IRA is a separate traditional IRA or Roth IRA held solely in the non-working spouse's name, with that spouse as the account owner and beneficiary designator.

The authority for this comes from IRC Section 219(c). The working spouse's compensation must equal or exceed the total contributions made to both spouses' IRAs combined. The non-working spouse does not need any earned income of their own.

Who Qualifies as a Non-Working Spouse

A spouse qualifies for the spousal IRA rule if they earned less than the IRA contribution limit during the tax year. That includes a spouse who is fully unemployed, on unpaid leave, or working part-time and earning less than $7,000 in 2025. The couple must file as Married Filing Jointly. Married Filing Separately disqualifies the non-working spouse entirely.

The Core Formula for Maximum Spousal IRA Contribution

The maximum contribution for the non-working spouse equals the lesser of two figures: the annual IRA contribution limit for that spouse's age, or the working spouse's earned income minus contributions already made to the working spouse's own IRA.

Written as plain text:

Non-Working Spouse Max Contribution = MIN(IRA Limit for Non-Working Spouse, Working Spouse Earned Income - Working Spouse's Own IRA Contribution)

For 2025, the standard IRA contribution limit is $7,000 per person. If the non-working spouse is 50 or older, their limit rises to $8,000 due to the $1,000 catch-up contribution.

2025 IRA Contribution Limits at a Glance

Under age 50: $7,000 per person
Age 50 or older: $8,000 per person
Combined household ceiling: up to $16,000 if both spouses are 50 or older

Worked Example 1: Both Spouses Under Age 50

Marcus earns $95,000 in W-2 wages. His spouse, Lena, earned $0 in 2025. They file jointly. Marcus contributes $7,000 to his own traditional IRA.

Apply the formula:

Non-Working Spouse Max Contribution = MIN($7,000, $95,000 - $7,000) = MIN($7,000, $88,000) = $7,000

Lena can contribute the full $7,000 to a spousal Roth IRA in her name. The household deposits $14,000 total into IRAs in 2025. Combined earned income of $95,000 exceeds the $14,000 combined contribution, so the requirement is satisfied.

Worked Example 2: Working Spouse Has Low Earned Income

Diane earns $9,500 from freelance design work in 2025. Her spouse, Tom, is a stay-at-home parent with $0 earned income. Both are under 50. They file jointly. Diane contributes $7,000 to her own Roth IRA.

Apply the formula:

Non-Working Spouse Max Contribution = MIN($7,000, $9,500 - $7,000) = MIN($7,000, $2,500) = $2,500

Tom can contribute only $2,500 to his spousal traditional IRA. Diane's earned income of $9,500 is the binding constraint. Their combined IRA contributions of $9,500 cannot exceed her earned income.

This example illustrates the most common calculation error couples make. They assume the non-working spouse always qualifies for the full $7,000. When the working spouse earns modestly and also contributes to their own IRA, the residual amount available to the non-working spouse shrinks.

Roth IRA Income Limits Apply Separately to Spousal Contributions

Roth IRA eligibility depends on the couple's modified adjusted gross income (MAGI), regardless of which spouse earns the income. For 2025, Roth IRA contributions for Married Filing Jointly filers phase out between $236,000 and $246,000 of MAGI.

If the couple's MAGI exceeds $246,000, neither spouse can contribute directly to a Roth IRA. The non-working spouse would instead contribute to a traditional IRA, potentially non-deductible, and consider a backdoor Roth IRA conversion. The spousal contribution formula above governs the contribution amount regardless of IRA type.

Deductibility of the Traditional Spousal IRA

A non-working spouse's traditional IRA contribution is fully deductible if the couple's MAGI falls below $126,000 in 2025, assuming the working spouse is covered by a workplace retirement plan like a 401(k). Deductibility phases out completely at $146,000 MAGI. If neither spouse participates in a workplace plan, the traditional spousal IRA contribution is fully deductible at any income level.

The Cost of Skipping the Spousal IRA

Skipping a $7,000 annual spousal IRA contribution carries a compounding cost that grows significantly over time. Using a 7% annualized return and 20 years of contributions:

Future value of $7,000 per year at 7% for 20 years = approximately $287,000

That figure represents tax-advantaged growth the non-working spouse forfeits entirely. In a Roth IRA, qualified withdrawals in retirement come out federal income tax-free, amplifying the real after-tax loss further.

How to Open and Fund a Spousal IRA

The non-working spouse opens an IRA in their own name at any brokerage offering IRA accounts, such as Fidelity, Vanguard, or Charles Schwab. The working spouse's earned income funds the contribution, but the deposit must go into the non-working spouse's account, not a joint account. The working spouse cannot claim the non-working spouse's IRA contribution on their own tax record. Each spouse files their own IRA contribution data through their individual tax returns, coordinated on the joint Form 1040.

Contributions for the 2025 tax year can be made up to April 15, 2026, giving couples time to calculate and fund after the tax year ends.

Run the Numbers Before the Deadline

The spousal IRA calculation depends on three variables specific to your household: the working spouse's earned income, each spouse's IRA contributions for the year, and each spouse's age. Small changes in any one of these variables shift the allowable contribution for the non-working spouse.

The CalcMoney Retirement Calculator lets you input your actual figures and see the maximum spousal IRA contribution alongside your projected retirement portfolio value. Run your numbers now before the April 15, 2026 contribution deadline closes the 2025 tax year.

Calculate your spousal IRA contribution limit with the CalcMoney Retirement Calculator →

Results are estimates for informational purposes only. Consult a licensed financial professional before making financial decisions.

Featured Partner

FIDELITY