I graduated from Penn State with a finance degree in 2026, and I spent all four years running businesses at the same time. That gave me an unusual test. Every week I could take something from a lecture and see whether it held up in a real company by Friday.
Some of it didn't. A lot of it did. Here's what actually carried over.
Profit and cash are not the same thing
This sounds obvious until it happens to you. A business can be profitable on paper and still not have enough money in the bank to pay next month's bills. The sale is booked, but the money hasn't arrived. Or the money arrived, but it's already tied up in something you bought to make the next sale.
Running a business that sells large items made this real for me fast. Anything sitting on a lot waiting for a buyer is money you can't spend on anything else. The finance classes gave me the language for it: working capital, cash conversion, the gap between when money goes out and when it comes back. Running the business gave me the feeling of it. I now look at cash before I look at profit, every time.
Every decision has a payback period
In corporate finance you learn to evaluate projects by asking how long it takes to earn back what you put in, and what that money could have done elsewhere in the meantime. In class, the projects are factories and acquisitions. In my world, they're a new jumbo game for Mega Party Rentals, a month of ads, or a piece of software.
The question is the same. If I spend this, when do I get it back, and am I sure? A game that takes a weekend to build and rents every month is a good investment. One that looks great but rents twice a summer is a decoration. Thinking in payback periods has kept me from buying a lot of decorations.
Think about the downside first
The most useful habit finance gave me is looking at what happens if things go wrong before looking at what happens if they go right. What's the worst realistic outcome? Can I survive it? If yes, the upside is worth chasing. If no, it doesn't matter how good the upside looks.
Young business owners tend to do the opposite. We see the best case and fall in love with it. I still feel that pull, but now I run the bad scenario first, and it has saved me from at least two decisions I would have regretted.
Read your numbers every month
I'm not an accountant and I don't want to be. But I read a profit and loss statement for each business every month, and I know what the main lines should look like. When something is off, I notice. That habit came straight out of financial accounting, which was not anyone's favorite class, and it's probably the most practical thing I learned in college.
If you run a business and someone else does your books, that's fine. Just don't let reading them be someone else's job too.
Seeing the bigger picture
As part of the program I went to London on a study tour focused on global finance. Walking through the financial district and hearing how capital moves between countries was the first time I saw how big the system really is. It sounds strange, but it made my local decisions clearer. The same principles that move billions across borders apply to whether a small company in Lancaster County should take on a new product line. Scale changes. Logic doesn't.
What the degree didn't teach
How to sell. How to negotiate with someone who has more experience than you. How slowly money actually moves in the real world, with checks and financing approvals and buyers who need to think it over for another week. How much of business is just following up.
None of that is a knock on the program. Some things you only learn by doing them badly a few times. The degree gave me the frameworks, and the businesses taught me how to use them under pressure.
If you're a finance student thinking about starting something
Start small and apply one concept at a time. Track cash for a month. Calculate the payback on one purchase. Read one P&L. You'll understand your classes better, and you'll be ahead of a lot of business owners who never connected the two.