Remember how awesome college was? Amidst all the glory, you probably thought, “Man, I can’t wait to give my kid this experience one day!”

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Well, okay. Maybe you didn’t think that. Maybe you were avoiding the thought of children altogether. But if you got ’em now or you’re thinking about having them in the future, there’s good news and bad news.

Let’s get the bad news out of the way: college has gotten ridiculously expensive. Tuition/fees are rising quicker than inflation. From 2004–2014 alone, the average combined cost of tuition and fees at an American private nonprofit college shot up 25%. Unfortunately, public schools are no exception to the tuition hike. Whereas in 1995–96, the average cost of tuition, fees, room and board at a public four-year university was $10,552 (in 2015 dollars), in 2015–16 you’re looking at $19,548.

OK, pause. Time for the good news!

No, you didn’t win Miss Universe. via giphy

If you start putting away a little money for your kid now, you may be in luck by the time they get to college. While a $20,000+ annual price tag isn’t easy to overcome at once, if you start investing ASAP, by the time your kid is college-bound you won’t need to scramble for cash. Emphasis on ASAP. When it comes to saving money, time is your biggest asset, and time is on your side.

Myth Debunked: You Get What You Put In

Saving for college tuition might seem like an uphill battle. You might not have a lot of money in the first place. What if you can only put aside $100 a month? That means that after a year, you’ll have $1,200, and after eighteen years you’ll have a mere $21,600. That’s less than a year of tuition, room and board at some colleges today. It’ll barely cover your college costs in the future, right? There’s no point in saving.

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One of the biggest misconceptions about saving money is that you get back exactly what you put in. This is a normal way of thinking. After all, when you were a kid and you saved five dollars every week, at the end of the month you had twenty. Simple math, right?

Luckily, when you’re an adult, saving money doesn’t have to mean literally preserving cash. Well, it could. But there are two big reasons why you can benefit from investing, instead of just putting aside, your money.

The first is because when it comes to saving for college tuition, putting cash in a “savings account” as opposed to investing it actually, well, loses you money. That’s because college tuition is rising faster than inflation, and when you put money in a savings account it typically loses value due to inflation. That’s called compound inflation, and it sucks.

The second reason you should invest money as opposed to put it into a savings account is because of compound returns. Unlike compound inflation, compound returns are a good thing. Let’s talk about how it works.

The Magic Of Compounding

When you invest money, it earns returns, including returns and dividends. These returns are essentially money you did no work to earn. If you keep your initial deposit invested along with the returns it’s earned, those returns should earn more returns. Those returns will earn further returns. And so on and so forth. Therefore, the sooner you invest, the greater the likelihood your returns will be higher.

So, let’s say your goal is to save $134,000 for your kid’s college tuition.* You opt for investing money in an account with an estimated expected return rate of 6%. If you started investing the year your kid was born and the return rate of 6% held, you’d have to deposit around $346 every month for eighteen years to meet your goal.

But if you started investing when your kid is 15, you only have three years to invest before it’s time for your kid to attend college. To make up for the time lost, you need to amp up how much money you deposit monthly to $3,407.

That’s a pretty unmanageable monthly deposit!

If your eyes starting to gloss over all the numbers above, just reference the chart below to see the impact of investing sooner: