Financial advisors at AARP say these mistakes should be corrected now.
* You make your child a joint owner of your bank account, meaning he or she can spend your money.
* You forget to change beneficiaries, potentially leaving assets to the wrong heirs. Spouses are entitled to 401(k)s and pensions unless they opt out.
* You make late IRA contributions. An investor contributing $5,000 each January (instead of April) could end up with $12,600 more after 20 years.
* You don't make "catch up" contributions to tax-deferred accounts. At 50 or older, you can add an extra $5,500 a year to a 401(k).
