A: It kills me when stay-at-home moms sell themselves short. You are working—you just aren't getting paid for it. I also noted that you refer to saving for "your" retirement. If you and your husband decide that you'll be the stay-at-home parent, his income needs to pay for both of your retirements.
As for Social Security, stay-at-home spouses can claim a benefit based on their partners. Even if you divorce, if you were married for at least ten years, you're entitled to that money, which can equal up to half of the main recipient's benefit. So, if your husband will get $1,000 each month, you would get $500. AARP has a calculator that parses all the variables. (Type "AARP Social Security Benefits Calculator" in your Web browser.)
That said, you should absolutely have a dedicated account—and make the maximum annual contribution. (The limit is $5,000 if you're under 50 years old, $6,000 if you're 50 or older.) Every spouse, with or without income, can open a Spousal IRA. The only requirement is that the "working" partner earn enough income to cover the contribution. So as long as your husband earns $10,000 in income, he can put in $5,000 for his IRA and cover $5,000 toward yours. That works out to $417 a month going into your IRA, within easy reach of the $400 you say is available.
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