'Once you have a Roth, you never go back,' claims IRA expert: How to choose retirement accounts

When it comes to holding stocks or bonds or just about any other kind of investment, financial advisors are pretty much united in their advice: diversify, diversify, diversify.

"Don't put all your eggs in>3 types of retirement accounts

Common forms of retirement saving fall into three buckets.

  • Pre-tax accounts: Accounts such as traditional 401(k)s and IRAs are funded with money you have yet to pay taxes>Prioritize matching funds, tax-free retirement income

    It's important to have a solid financial foundation, such as a well-established emergency fund, before investing, experts generally caution. From there, they say, prioritize getting what advisors playfully refer to as "free money."

    "Once you've got a budget and an emergency fund, and you're investing on Day 1, you should put enough in your 401(k) to get a company match," says Tim Sobolewski, a certified financial planner with the Financial Planning Center in Buffalo, NY.