Pay off student loan debt or invest?

Is there a general rule of thumb on student loan interest rates and whether or not it’s better to pay off ASAP vs invest in an index fund? Sold a lot of company stock from an ESPP and RSU program that happens to be the value of our household’s student loan debt that is just entering repayment after graduation. Can’t tell if a 5 or 6% is worth drawing out or paying off in one go. Not worried about rainy day or emergency fund and already maxing out my retirement. So really it’s a question of debt payoff or non retirement investment.

sevan ,

Paying off your loans gives a guaranteed tax-free return, which is very hard to beat on a consistent basis. Obviously you can get lucky with market timing, but I prefer the guarantee. It also increases your monthly cash flow, which you can start investing.

blueskycorporation ,

This is a hard question because it highly depends on your whole financial situation and is also psychological.

Some elements you may consider:

Purely on a financial side, it depends on your risk tolerance and opportunity cost. How much would you earn if you kept the money? If you have 100% of your portfolio in equities, and you invest everything in the S&P, purely based on CAPM your expected return should be around 8.4 % (10y treasury at about 4, and risk premium at 4.2). If you have different market assumptions or a different risk tolerance and thus portfolio allocation, your expected return will be different. So, based on that, you can see what is financially optimal.

But there is also another important consideration, and this is where your assets matter a lot. Imagine you have 60k saved, and your loans are 50k. Of your assets, the first 20k are your emergency fund, and are barely earning interest. The next 60 are maybe in a safe ish portfolio. Overall, those 60k would be expected to earn let’s say 4 or 5% overall. Ot would seen financially optimal to pay back a 6% loan. However, this would leave you with no debt and only 10k in assets. That is, at risk of having to take on new debt if you have an unexpected expense, possibly at an unfavorable rate.

If in a different example you have 500k in assets and 50k of debt, the situation is different, all else equal. So you can see where this is not just based on interest. You don’t want to pay back a 6% loan only to find yourself in a situation where you have to resort to credit card debt because you spent all the cash paying back the loan.

Tldr: on a purely financial optimization side, it may or may not be optimal to pay back the loan based on your portfolio allocation and market expectations. On a behavioral side, a less financially optimal plan may still be desirable depending on other objectives such as keeping your safety net

HoneyMonster ,

All my loans are sub 5% so I’ve been putting my extra cash in Alliant Credit Union’s 5.15% APY 18month CDs. No point in paying them down if I can basically beef up my emergency fund as a bonus.

nbailey ,
@nbailey@lemmy.ca avatar

Do you have an emergency fund built up? If you don’t already have 6-8 months of expenses stashed away, I’d start there. Then keep some on hand for unexpected expenses. Like others have said, the decision depends on interest rates for the loans.

Another thing to consider is opportunity cost- if you repay the student loans off, while that helps long term it does deprive you of some liquidity. So, if you need to buy a car or another expensive item, you’ll have a loan potentially at a higher rate than if you’d held onto the cash.

UBWare ,

at 3% or lower, I’d invest.

at 4% either is fine.

at 5% or more, I’d pay off loans.

Serinus ,

And by invest, we don’t mean the latest fad planted on wallstreetbets.

www.treasurydirect.gov/savings-bonds/i-bonds/ is a good spot.

jeffw ,

I bond yields are tanking. 4.3% isn’t worth it when you can get a shorter-term CD at 5%

Serinus ,

Damn, you’re right.

www.huntington.com/landing-pages/…/CD-c3-SEM-505

(Just the first one I found.)

exploding_whale ,

Locking some money with that 0.9% fixed plus inflation for 30 years has some merit. I wouldn’t go all in but they aren’t completely worthless.

Empyreus ,

Depends on a lot of things, but typically it’s safer and better return to pay of loans. They have a set interest rate that is guaranteed, when it comes to investing it’s a never guaranteed and you can loose money.

SpaceNoodle ,

It’s hard to rely on a constant 6%+ investment return, but your loan interest rates won’t go down. Pay off your loans.

Turkey_Titty_city ,

Depends on the interest rates. If your rocking a 5% loan, yeah, pay that off first. If you're rocking a 2-3% loan, invest.

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