Here’s one of my favorite benefits of the Solo 401(k): you can borrow against it. That’s right. Unlike an IRA, you don’t have to wait until you’re 59 and a half to tap into your own money. You can borrow up to 50% of your account balance or $50,000 (whichever is less) and pay yourself back with interest. And here’s the best part: that interest doesn’t go to a lender. It goes right back into your 401(k), tax-free, building your account instead of someone else’s. It’s one of the most flexible and