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They're essentially the same contribution rules which govern your Roth IRA if you're married, file a joint tax return, and both spouses earn income. The combined income of the two spouses is treated like one income, regardless of who earns it. One spouse can earn 100% of the household income or each spouse can earn 50%.
If youâre married and you file a joint return, you can make a regular contribution to a Roth IRA even if you have little or no qualifying income. Solely for the purpose of determining how much you can contribute to an IRA, youâll be treated as if you had taxable compensation income equal to:1  Your qualifying income (if any), plus. 2  Your spouseâs qualifying income (if any), minus. 3  Your spouseâs regular contributions to traditional IRAs and Roth IRAs.pousal Roth IRA. By Kaye A. Thomas. Current as of November 15, 2013. In reality, thereâs no such thing as a spousal IRA, just a rule that allows you to rely on your spouseâs income when you contribute. As a general rule, your regular IRA contribution for any year canât exceed your qualifying income for the year.