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Why You Need to Consider Your Spouse When Planning 401(k) Contributions

Most financial experts advise you to replace at least 70% of pre-retirement income if you want a comfortable retirement -- and this is a conservative recommendation because many seniors end up spending more.

When figuring out the amount of income you need as a household during retirement, you'll have to take both spouses' income into account if you both work. Unfortunately, troubling data from the Center for Retirement Research (CRR) at Boston College shows this often isn't happening.

The problem, the CRR found, is that in many two-income households, only one spouse has access to a workplace retirement plan and the other doesn't. In these households, the spouse with the workplace plan should be saving more to pick up the slack for the spouse without one -- but this often isn't happening. The result is that the couple isn't ready for retirement when the time comes.

This doesn't have to happen to you and your spouse if you work together to make a retirement savings plan that makes sense for both of you.

Tipped over glass jar full of coins that's labeled 401(k)
Tipped over glass jar full of coins that's labeled 401(k)

Image source: Getty Images.

Too many workers don't consider their spouse in making 401(k) contributions

According to the CCR, workplace retirement plans are available only to around half of all workers in the private sector. When these plans aren't available, most people don't end up saving anything for retirement. The result is that many dual-income couples have just one saver.

Unfortunately, the single saver rarely contributes enough to a 401(k) to ensure that 70% or more of combined household income is replaced in retirement, according to the CRR. In fact, the average contribution rate to a 401(k) by a single saver in a dual-income household is actually below the average contribution that each spouse makes in situations where both members of a couple work and save. In dual-income households where both spouses have a workplace retirement plan, the average contribution rate is 9.4% of income, while the average contribution rate when there's only one saver in a dual income couple is just 8.4%.

One result is that, when considering total household income, couples with only one saver end up putting just 4.9% of household income away for retirement. This is well below the recommended minimum 10% of income you need to save to have close to enough money to live on in retirement. And in fact, thanks to longer life spans and more-conservative projections for investment returns in coming years, most experts actually advise saving much more than 10%.

What to do if only one spouse has a workplace retirement plan

If only one spouse has a 401(k) plan, it's imperative both partners work together to establish joint goals for retirement savings that ensure sufficient income for the household.