If you borrowed in 2024, you'll have to repay the full balance by April 15, 2025, or by Oct. 15, 2025.
This longer deadline does slightly reduce the risks of borrowing. But, if you take out a loan now, spend the money, and then are faced with an unexpected job loss, it could be hard to repay your loan in full.
5. If you default on your 401(k) loan, you'll owe a penalty.
If you do not pay your 401(k) loan back as required, the defaulted loan is considered a withdrawal or distribution and thus is subject to a 10% penalty applicable to early withdrawals made before age 59 1/2. That's potentially a huge cost, especially when you also consider the loss of the potential gains your money would have made had you left it invested.