Pay off student loans early or invest instead?
Last updated November 9, 2026
There is no single right answer, but there is a clear way to think about it. Extra money can either cut a debt that charges you a known rate, or go into investments that may earn more or less than that rate.
What extra payments can save
Take $30,000 at 6% on a 10-year plan. The payment is about $333 a month and total interest is about $9,970. Adding $100 a month pays the loan off in about 7 years and 2 months and saves about $3,050 in interest.
The core comparison
Paying down a 6% loan is like earning a guaranteed 6% on that money. Investing could earn more or less, and the return is not guaranteed. A common rule of thumb:
- Rates above roughly 7% to 8%: paying down the loan often makes sense.
- Rates below roughly 4%: investing may come out ahead over long periods, though returns vary.
- In between: it depends on how much risk you want and how much the debt bothers you.
These ranges are rough guides, not rules.
Do these first
- Employer retirement match. If your employer matches contributions, that is often worth capturing before extra loan payments.
- Emergency savings. A cushion keeps a surprise bill from becoming new debt.
- High-rate debt. Credit cards at 20% or more usually come before student loans.
Federal loans have protections
Federal student loans can offer income-based repayment, deferment, forbearance and, in some cases, forgiveness programs. Rules change, so check studentaid.gov. If you may need those options, think twice before paying a federal loan off early. Private loans generally do not have them.
Taxes
Student loan interest may be deductible up to a yearly limit that depends on income. A tax professional or the IRS can tell you how it applies to you.
Use the planner
Enter every loan with its rate. The planner shows which debts cost you the most, and it puts your student loans in context with the rest.
Run your own numbers
Enter your balances, rates and payments to see which debt to pay first and when you could be debt-free.
Related guides
- Should you pay off your mortgage early?
- How to pay off debt faster
- Debt snowball vs. avalanche: which one is better?
This article is for education only and is not financial, tax or legal advice. Examples use simplified monthly interest and assume on-time payments with no new borrowing.