11 things you should never do with your 401k

A 401k plan through your employer is a great way to save for retirement because of the tax advantages offered. Plus, you make contributions through payroll contributions, so you can automate your savings and the contribution limits are significantly higher than for individual retirement plans.

There are still pitfalls when using a 401k, however. Read on to learn 11 things you shouldn't do with your 401k plan so you don't jeopardize your retirement savings.

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11 Things You Should Never Do With Your 401k
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11 Things You Should Never Do With Your 401k

1. Ignore Matching Contributions

If your employer offers to match all or a portion of your contributions to your 401k plan, take advantage of it. Different employers have different matching schemes. For example, one employer might offer to match your entire contribution up to 5 percent of your salary, while another might offer to match 50 percent of your contribution up to 8 percent of your salary. If you don't contribute enough, you're essentially turning down free money. For example, suppose you make an annual salary of $50,000 and your employer agrees to match half of your 401k contribution up to 6 percent of your salary. If you only contribute 3 percent of your salary to the 401k instead of 6%, you're turning down $1,500 of free money each year.

Get the Answers: 15 Big 401k Questions to Ask Your Employer

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2. Leave a Job Before Employer Contributions Vest

Your employer might attach strings to employer contributions to your 401k plan, known as vesting requirements. Vesting requirements force you to stay with the company for a certain period of time before you're fully "vested" in the employer's contributions. If you leave before the time period expires, your employer keeps any contributions made to your 401k plan on your behalf.

There are two vesting methods: cliff vesting and gradual vesting. With cliff vesting, all employer contributions must be fully vested after you've been with the company for three years. With gradual vesting, employer contributions must vest 20 percent per year for each year after your first year of employment. Under this method, you are fully vested at the end of six years. Of course, your employer can choose to vest the contributions sooner than required, so it's important to talk to your employer so you know when your contributions are yours to keep.

Though there might be a few circumstances where it's worth it to leave any unvested money in your 401k, you should at least be mindful of what you're giving up when making your decision. Learn what your options are for withdrawing from your 401k

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3. Invest Too Much in Company Stock

Many companies offer their own stock as an investment option for their 401k plan participants. While you don't have to exclude this option from your 401k plan, you shouldn't have more than 10 percent of your 401k balance invested in your employer's stock, according to a column in U.S. News & World Report. The percentage should be lower if you have other portions of your net worth tied up in company stock, such as deferred compensation or stock options. If the company performs poorly, your retirement savings could suffer because you aren't diversified.

Use These Strategies: 8 Online Investments That Make Portfolio Diversification Easier 

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4. Avoiding Investing in Stocks

Just because you should limit your investments in company stock doesn't mean you should ignore equities altogether in your 401k plan. Though stocks can be scary because they can lose money, super safe investments should also scare you because of the risk of inflation. For example, you might feel comfortable holding your money in a certificate of deposit because you won't lose money. But CDs often don't even keep pace with inflation, so you're actually losing purchasing power. If you're not sure how you should be investing in your 401k plan, consider finding a financial advisor to help ensure you stay on the right path to reach your goals. 

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5. Failing to Change Your Contributions Over Time

When you start a new job, you set your contribution amounts to your 401k plan. Though you can update them anytime, many people stick with a median default contribution rate. But the Financial Industry Regulatory Agency reports that experts recommend saving 15 percent of your salary. Though 15 percent might seem unattainable when you start your job, you can increase your contributions over time until you can reach that level.

For example, if you start at 3 percent, you can commit to increasing your contribution percentage by 1 percent each year without feeling too much of a pinch. Or, you might increase the dollar amount of your contribution by half the amount of your annual raise. In addition, the 401k contribution limits change over time, which gives you an opportunity to put more money into the plan. For example, in 2018 the annual contribution limit is increasing to $18,500 from $18,000.

Related: How Much Should You Contribute to Your 401k This Year? 

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6. Not Rebalancing Your Portfolio Over Time

Different investments grow at different rates over time, which can lead to your portfolio becoming unaligned with your investing goals. For example, if the stock market has a few good years, your portfolio could become overweighted in equities, leaving you more exposed than you want to be during a market correction. You should also look at your investments within each asset class. If one sector has a particularly good or bad year, you might need to readjust. If technology stocks have a great year, for example, you might want to sell some of them and rebalance your portfolio so you're not overexposed to that sector having a bad year in the future. The moral of the story: It's dangerous to treat your retirement plan as a "set it and forget it" operation

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7. Borrowing Too Much From Your 401k

Some employers let employees borrow money from their 401k plans. If allowed, the maximum loan amount is the smaller of $50,000 or half of your vested account balance. For example, if your balance is $60,000, you can borrow up to $30,000. If your balance is $200,000, you can only borrow up to $50,000. Typically, you have up to five years to repay the loan.

If you leave your job, including if you are let go through no fault of your own, the remaining balance is treated as an immediate distribution, subject to income taxes and early withdrawal penalties. The IRS imposes a 10 percent early withdrawal penalty on top of the income taxes due. So if you have a $10,000 balance on your loan that you can't pay back and you fall in the 25 percent tax bracket, you'll owe the IRS $3,500 in taxes and penalties.

That's not to say that 401k loans are never helpful. When you repay the loan, the interest gets added back to your 401k plan, so you're essentially paying yourself instead of a bank. As good as that sounds, you're missing out on the market returns on the money that you've borrowed because it's not invested. 

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8. Not Comparing Investment Fees

Different 401k plan investments come with different fees. When selecting your investments, compare the fees that you're paying. Even half a percentage point can make a big difference in the size of your retirement nest egg when you hit retirement age. According to Consumer Reports, you can often find broad-based index funds that charge 0.2 percent or less per year. 

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9. Ignoring Roth 401k Options

Some employers offer Roth 401ks as an option in addition to the traditional 401k option. Traditional 401k plans let you put aside pretax dollars that can grow tax-free until retirement. Roth 401k plans offer the opposite: You don't get to exclude your contributions from your taxable income, but when you take qualified distributions, you don't pay any taxes. Roth 401k plans are typically better if you expect to pay higher income taxes in retirement than you pay today. If you want to hedge your bets on what future tax rates will be, you can divide your contributions between both traditional 401k contributions and Roth 401k contributions, though your total contribution limit is still the same.

401k vs. Roth 401k: Which Is Better for Your Retirement Plan? 

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10. Not Updating Your Beneficiary Designations

While it can be unpleasant to think about, if you die before you empty your 401k plan, the remaining balance will pass to the person that you name on the beneficiary designation form. You can — and should — update your beneficiary designations over time. If you don't, your money could be going to someone you don't want. The beneficiary designation on your 401k plan trumps even your will. For example, if you originally named a former spouse that you've since divorced, your 401k will go to your ex if you didn't update your 401k plan designation. 

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11. Roll Your 401k Into an Existing IRA

When you leave your job, you can move your money from your old 401k plan to a new qualified retirement plan to avoid taking an early distribution and allowing the money to continue to grow tax-sheltered. Under the Bankruptcy Abuse Prevention and Consumer Protection Act, funds in your 401k plan are exempt from your creditors, but only the first $1,283,025 of IRA assets are exempt from creditors under federal bankruptcy law. However, this limit doesn't apply to money held in an IRA that you rolled over from a 401k plan as long as those funds are held separate from any contributions originally made to a IRA. So, if you have a 401k plan from an old job, do a 401k rollover into a separate IRA to maintain its unlimited creditor protection.

Up Next: 13 Ways to Increase Your 401k 

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