Spousal IRA Deductibility Rules

The spousal IRA deductibility rules permit a working spouse to contribute to a traditional IRA on behalf of a non-earning or low-earning spouse, with full deductibility in many cases. The deduction phases out based on modified adjusted gross income and whether either spouse is covered by an employer retirement plan.

The Basic Rule and Income Requirement

A spousal IRA is a traditional IRA (or Roth IRA) opened in the name of a spouse who has little or no earned income, funded using the working spouse’s earned income. The federal tax code allows this because the rule is tied to household earned income, not individual earned income.

The fundamental requirement is that the working spouse must have earned income at least equal to the combined IRA contributions for both spouses. If one spouse has no income and the couple wants to fund $14,000 in IRAs ($7,000 each), the working spouse must have at least $14,000 in wages, salary, or net self-employment income.

This is straightforward for couples where one spouse works full-time and the other does not. It also works for couples where both work but one has minimal income. A spouse earning $8,000 can support a $7,000 IRA for themselves and may have room to fund part of a spouse’s IRA, but only to the extent earned income exists.

Deductibility and the Phase-Out

Once a spousal IRA is established, the question is whether contributions are tax-deductible. This is where the phase-out rules become critical.

If the working spouse is not covered by an employer retirement plan (no 401(k), pension, 403(b), etc.), contributions to a traditional spousal IRA are always fully deductible, regardless of income level. This is the simplest scenario.

If the working spouse is covered by an employer plan, the deduction for the working spouse’s own IRA and spousal IRA contributions is phased out based on modified adjusted gross income (MAGI) when filing jointly. For 2024, the phase-out begins around $230,000 of MAGI and is fully phased out around $240,000. These thresholds change annually for inflation.

If the non-earning spouse is covered by an employer plan (less common, but possible if they work part-time), they have their own separate phase-out range, much lower — around $156,000 to $166,000 in 2024 when filing jointly.

The spousal IRA deduction is particularly valuable because it allows a household to build retirement savings even when one spouse has no income or is taking time out of the workforce to raise children. Without this rule, a non-earning spouse could not contribute to an IRA at all.

Non-Deductible Contributions

If a couple’s MAGI exceeds the phase-out range for the working spouse or non-earning spouse, they can still contribute to a spousal IRA, but the contribution is non-deductible. The money grows tax-deferred, but there is no upfront deduction.

This option is valuable for high-income households wanting to save more than they can deduct. The working spouse might have enough income to maximize a 401(k), and a spousal IRA, even non-deductible, adds an extra $7,000 of sheltered space.

However, non-deductible spousal IRA contributions complicate taxation because the account has a cost basis (the non-deductible portion). Upon withdrawal, a portion is tax-free (the basis return), and the remainder is taxable. This tracking burden makes non-deductible IRAs less attractive unless the household is deliberately managing basis for later withdrawal or Roth conversion.

Roth Spousal IRA

A Roth IRA can also be funded using a spousal arrangement. The same earned income requirement applies, and the contribution limits are identical ($7,000 per spouse in 2024, rising to $8,000 at age 50).

However, Roth IRAs have no deduction — contributions are made with after-tax dollars. In exchange, qualified withdrawals are tax-free. Roth spousal IRAs are advantageous for lower-income households (where the tax deduction is worth less) or younger savers with decades to accumulate tax-free growth.

Roth spousal IRAs are subject to an income phase-out, but at higher thresholds than traditional IRAs and only if the contributing spouse has MAGI above the limit. For married couples filing jointly in 2024, the phase-out began around $230,000. If income exceeds the upper threshold, direct Roth contributions are not allowed.

A sophisticated strategy involves a non-working or low-earning spouse making a non-deductible traditional spousal IRA contribution (if deduction is not available), immediately converting it to a Roth, and harvesting the tax benefit of the conversion. This “backdoor Roth” path for high-income households has specific rules but is legal when executed correctly.

Practical Example

Consider a married couple, Sarah and Mike, filing jointly:

• Sarah works full-time and earns $150,000.
• Mike is a stay-at-home parent with no earned income.
• Sarah is covered by her employer’s 401(k).
• Their 2024 MAGI is $150,000.

Sarah can contribute $7,000 to her own traditional IRA. This is fully deductible because her MAGI falls below the $230,000 phase-out threshold (even though she is covered by a plan).

Mike can contribute $7,000 to his spousal IRA, funded from Sarah’s earnings. Mike’s IRA is fully deductible because Mike is not covered by an employer plan (regardless of the couple’s income). The deduction belongs to Mike, not Sarah.

Result: the couple has a combined $14,000 deduction and both have funded IRAs using Sarah’s single income stream.

Now consider if Sarah’s income were $245,000:

• Sarah’s $7,000 contribution is non-deductible (her MAGI exceeds $240,000).
• Mike’s $7,000 spousal IRA is still fully deductible (Mike has no plan coverage and thus is outside any phase-out).

The couple deducts $7,000 for Mike and must track $7,000 of basis on Sarah’s IRA.

Mechanics: Account Titling and Ownership

The spousal IRA is titled in the non-earning spouse’s name alone. Sarah does not co-own Mike’s IRA; Mike owns it. This is essential for tax reporting and withdrawal rules.

Each spouse controls their own IRA. Mike can direct the investments, execute withdrawals, and name beneficiaries. If the couple divorces, Mike retains his IRA, and Sarah retains hers (as of the divorce date). Assets are not split between them unless they specifically agree to a qualified domestic relations order (QDRO).

Contribution funds come from the working spouse, but ownership vests immediately in the named spouse. The account must be opened in the non-earning spouse’s name at the financial institution.

Annual Compliance and Record Keeping

To claim the spousal IRA deduction, the couple must file a joint return. Married couples filing separately cannot deduct spousal IRA contributions (with rare exceptions).

If either spouse made non-deductible contributions, Form 8606 must be filed with the tax return to establish cost basis. This form tracks cumulative basis across all IRAs held by that individual. Failure to file Form 8606 can result in incorrect taxation of later withdrawals and penalties.

Interaction with Roth Conversion and Backdoor Roth

A non-earning spouse can participate in a backdoor Roth strategy. For instance, if a high-income household cannot make direct Roth contributions, the non-earning spouse can make a non-deductible traditional IRA contribution (within their spousal limit) and immediately convert it to a Roth IRA. The conversion is treated as taxable income based on the account value, but if the contribution was post-tax and non-deductible, the conversion tax is minimal.

This strategy requires care: the couple must not have significant pre-tax IRA balances, or the “pro-rata rule” will trigger taxation on the conversion. A detailed example is in the Roth IRA entry, but the takeaway is that spousal IRAs enable flexibility for high-income households who want to maximize tax-deferred retirement savings.

See also