How Interest Rate on a 401k is Calculated | MyBankTracker (2024)

How Interest Rate on a 401k is Calculated | MyBankTracker (1)

Believe it or not, you can actually lend money to yourself. It's true, and it can be much, much cheaper than a credit card-- though that doesn't necessarily make it a good idea. You can take a loan out from your own 401(k) retirement account, and pay it back to yourself with interest. While it would be nice to give yourself a no-interest loan (especially considering this is your money), the world just isn't that fair.

Whether taking a loan out of your 401(k) is a good idea or not is a matter for much debate, but it largely depends on your financial situation and your employment stability. The biggest downside to taking such a loan is that, should you lose your job, you are required to pay the loan back in full within 60 days or else risk paying penalties and taxes (once you have defaulted, the loan is treated as an early withdrawal). Furthermore, financial planners will point out that taking principal out of your retirement account will make it grow more slowly, and that's hard to argue with.

But if your employment situation is stable, you still earn some interest on the money you've taken out of your account, although you are the one paying the interest into it.

What isa 401(k) Loan?

The terms of a 401(k) loan are set by employers, not by you or the fund administrators, so there is no standard here except for what is legally permissible. You can take out up to 50% of your retirement fund (or $50,000, whichever is smaller) as a loan, which can be repaid over a maximum term of 5 years (with some exceptions) and is typically taken out of payroll (as an after-tax payment, it's worth noting). And despite what people say, you don't really pay tax twice on a 401k loan-- according to some.

It's a strange and complex financial product. Some have even pointed out that it is, technically speaking, a means of diversifying your investments -- even if you're the source of the interest payments. And for an emergency loan (or a loan for someone with damaged or no credit), a 401k loan can have attractive interest rates.

What Determines the Interest Rate?

Typically, according to most sources, a 401(k) loan will carry an interest rate based on the Prime Rate plus 1 or 2 percentage points. The prime rate is published every day by the Wall Street Journal, based on surveys of 30 banks' lending rates.

Its low rates are comparable only to a HELOC, which, if you don't have any home equity to tap into, you can't get. And unlike with HELOC, you're actually paying yourself the interest -- not your bank.

How to Pay Off 401(k) Loan

This is the number one use for tapping your 401(k). Typically, your 401(k) loan tacks on 1% interest to the prime rate.

So, figure on paying yourself back at 4.25%, which is vastly superior to the interest rates (on average from 13 percent to 22 percent) that banks charge their credit-card happy customers.

Should You Use 401(k) to Cover Emergency Expenses?

Life is filled with emergencies. Even if you have medical insurance, your carrier likely won’t pick up the entire tab.

If you had an open home equity line of credit, you might be tempted to tap those funds first. HELOC rates may be very close to what you'd get from a 401(k) loan. And, a HELOC may be tax advantaged (tax deductible on up to $100,000 for expenses that don't deal with your home).

But if you don’t have one, there’s all that initial paperwork to fill out. Plus, HELOCs adjust monthly, usually with no limit on the size of the adjustment.

Caution:You could lose your home if you fail to repay the borrowed funds through your HELOC.

To Cover Educational Costs

While average student loan debt is about $20,000 per graduate, many alumni are carrying heavier debt loads at even higher percentage rates. So, if you have the opportunity to pay off a nagging student loan at, say, 7% APR or higher, you should kill it off, no questions asked, using your 401(k).

By the way, if you’re curious why the IRS makes you pay yourself back with interest, credit the bureaucrat who didn’t want you to entirely gut whatever retirement savings you had managed to scrape together. Paying yourself back with interest softens the blow of self-borrowing.

To Pay For a Special Occasion

If you don’t have a war chest or emergency fund to raid for a special event, you should consider tapping your 401(k). When we say “special event,” we don’t mean running out to buy a 70-inch high-def television set, either.

We had in mind maybe an engagement ring (average cost of 5,000) or even a wedding (average cost of $18,000). Again, you don’t have to turn to any super calculator to see how you might come out ahead. If the cost of interest charged on a consumer loan is 8percent and the investment earnings you lose from your 401(k) withdrawal is 7percent, you gain a 1 percent cost advantage.

Things to Consider

First, if you have to raid your retirement savings for any reason, you need to take a hard look at what brought you to this fiscal cliff. Have you been spending too much? Are you not following your budget? Do you even have a budget for living expenses, including a rainy day fund to cover life’s emergency of the month?

Second, when you begin repaying yourself back, you still need enough cash flow to afford your other payments such as your mortgage and car payments.

How Interest Rate on a 401k is Calculated | MyBankTracker (2024)

FAQs

How is interest calculated on a 401k? ›

In most cases, this rate will be based on the prime interest rate. You'll likely find that the rate you pay will be the prime interest rate plus 1%. So, if the prime rate were 8%, in this case, you'd pay 9% interest on your loan.

How are 401k loan interest rates calculated? ›

Retirement plans typically charge the current prime rate plus 1% to 2% interest rate on 401(k) loans. Since the interest rate on your 401(k) loan goes back into your 401(k) plan, it's similar to paying yourself back, but with post-tax funds.

How is the rate of return calculated in a 401k? ›

Take the ending balance and subtract any contributions you made over the past year. Divide by the starting balance from one year ago. Subtract 1 and multiply the result by 100. That will tell you the percentage total return.

What is a good interest rate for a 401k? ›

Many retirement planners suggest the typical 401(k) portfolio generates an average annual return of 5% to 8% based on market conditions. But your 401(k) return depends on different factors like your contributions, investment selection and fees.

Does 401k have interest rate? ›

401(k) plans do provide interest-bearing options in the securities in which they invest funds. Interest-bearing options in a 401(k) include CDs, money market funds, U.S. treasury bonds, and corporate bonds.

Is the interest rate on a 401k loan paid to yourself? ›

Any interest charged on the outstanding loan balance is repaid by the participant into the participant's own 401(k) account, so technically, this also is a transfer from one of your pockets to another, not a borrowing expense or loss.

Are 401k loan interest rates fixed or variable? ›

With a 401(k) loan, you can borrow money from your workplace retirement account and pay it back with interest. Both the balance payments and interest go back into your 401(k) account. The rate can fluctuate and is typically one or two points higher than the prime rate.

Is it better to get a loan or borrow from a 401k? ›

Borrowing from your 401(k) isn't ideal, but it does have some advantages, especially when compared to an early withdrawal. Avoid taxes or penalties. A loan allows you to avoid paying the taxes and penalties that come with taking an early withdrawal.

Is it a good idea to borrow from your 401k? ›

As much as you may need the money now, by taking a distribution or borrowing from your retirement funds, you're interrupting the potential for the funds in your 401(k) plan account to grow through tax-deferred compounding — and that could make it more difficult for you to reach your retirement goals, says Feist.

Is 7% return on 401k good? ›

The average rate of return on 401(k)s is typically between 5% and 8%, depending on market conditions and individual portfolios. 401(k) plans offer benefits such as potential employer matches, tax advantages, and federal protections under ERISA.

How often is 401k interest compounded? ›

401(k) plans typically compound interest on a daily, monthly, or quarterly basis, depending on the plan's policies. Compound interest is a powerful tool for building wealth, as it allows investment gains to earn interest on themselves over time.

Does 401k double every 7 years? ›

One of those tools is known as the Rule 72. For example, let's say you have saved $50,000 and your 401(k) holdings historically has a rate of return of 8%. 72 divided by 8 equals 9 years until your investment is estimated to double to $100,000.

What is the average 401k balance at age 65? ›

$232,710

Why is my 401k rate of return so low? ›

Stock market volatility and/or poor investment choices are two of the most common causes of 401(k) losses. Diversifying your portfolio, minimizing investment fees, and not panicking when the market is down can help you to regain lost ground over time.

How much 401k should I have at 55? ›

Key takeaways. According to the Federal Reserve, the average 401(k) balance is around $30,000 for those under 35, around $132,000 for those ages 35–44, around $255,000 for those ages 45–54, around $408,000 for those ages 55–64, and around $426,000 for those ages 65–75.

How long does it take for a 401k to double? ›

One of those tools is known as the Rule 72. For example, let's say you have saved $50,000 and your 401(k) holdings historically has a rate of return of 8%. 72 divided by 8 equals 9 years until your investment is estimated to double to $100,000.

Can I live off the interest of my 401k? ›

It's possible, but it isn't realistic for everyone. Living off of interest relies on having a large enough balance invested that your regular interest earnings meet your salary needs.

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