Spousal IRAs allow non-working spouses to contribute to an IRA (either Roth IRA or traditional IRA). Your spouse does not need any earned income, but the working spouse must have enough earned income to equal or exceed the total contributed to the two accounts. You can contribute up to $5,500 to each IRA plus an additional $1,000 each if you are age 50+. Your spouse is also eligible to convert from his/her spousal IRA to a back-door Roth IRA.