Liz Weston

Dear Liz: I am having difficulty determining if I should invest money in my 457 deferred compensation account or in a taxable account, as I am in the 15% tax bracket.

Also, does it matter whether I invest in a Roth IRA instead of my traditional IRA? My biggest pot of money is in a taxable account, then my IRA, then a Roth. I am single, no dependents and over 50.

Answer: In retirement, having money in different tax “buckets” can help you better control your tax bill.

Taxable accounts, for example, can allow you to take advantage of low capital gains tax rates plus you can withdraw the money when you want: There are no penalties for withdrawals before age 59½ and no minimum distribution requirements.

Tax-deferred accounts allow you to save on taxes while you’re working but require you to pay income taxes on withdrawals — and those withdrawals typically must start after you turn 70½.

Roth IRAs, meanwhile, don’t have minimum distribution requirements, and any money you pull out is tax free, but contributions aren’t tax deductible.

Because most people drop to a lower tax bracket in retirement, it often makes sense to grab the tax benefit now by taking full advantage of retirement accounts that allow deductible contributions.

That means the 457 (generally offered by governmental and nonprofit entities) and possibly your regular IRA. (Your ability to deduct your IRA contribution depends on your income, since you’re covered by the 457 plan at work.)

If your IRA contribution isn’t deductible, then contribute instead to a Roth. If you still have money to contribute after that, use the taxable account.

If you expect to be in the same or higher tax bracket in retirement, though, consider funding the Roth first. Prioritizing a Roth contribution also can make sense if you have plenty of money in other retirement accounts and simply want a tax-free stash you can use when you want or pass along to heirs.