The Other Side of the Gift.

In the first half of this story, a grandparent wrote a single $5,000 check when a grandchild was born, left it invested and untouched, and watched it grow to about $14,700 by the child's 18th birthday. That growth was compound interest working for the family.

But there's a quieter gift hidden inside the first one. That $14,700 is money the family now doesn't have to borrow. And to see how much that's really worth, you have to look at the other side of the coin — what it costs to get $14,700 the other way. So let's borrow it, and watch the very same force, compound interest, turn around and work against us.

The Comparison

The same $14,700 — given, or borrowed.

The most common way American families borrow for an undergraduate's tuition gap is a Parent PLUS loan — a federal loan a parent takes out in their own name to cover what other aid doesn't. As of the 2025–26 school year it carries a fixed interest rate of 8.94% for the life of the loan, plus a 4.228% origination fee that is shaved off the top of the money before it ever reaches the school.

That fee matters more than it looks. To actually put $14,700 in the school's hands, you can't just borrow $14,700 — the fee would eat into it. You have to borrow about $15,349, and the lender keeps $649 as the origination fee right away. So you start out owing $15,349 to put just $14,700 to work — and from day one, interest is charged on the full $15,349, the fee included.

What Borrowing Costs

$194 a month, for ten years.

A $15,349 Parent PLUS loan at 8.94%, repaid on the standard 10-year schedule, costs about $194 every month for 120 months. Add those payments up and the family hands the lender about $23,272. They received $14,700 of usable money, so the cost of borrowing — the fee plus all the interest — comes to roughly $8,572 on top of what they got to spend.

Put the two stories next to each other and the symmetry is striking. The gift earned about $9,700 by growing for 18 years. The loan costs about $8,572 by being repaid over 10. It is the same engine — a rate applied over and over to a balance — pointed in opposite directions. When the balance is your savings, growth compounds in your favor. When the balance is a debt, interest compounds against you.

Why Early Payments Sting

In the early years, you're mostly paying interest.

A loan payment is split two ways every month: part covers the interest the balance just racked up, and the rest chips away at the principal — the amount you actually owe. Early on, the balance is big, so most of each payment is interest and very little reduces what you owe. Only later, once the balance has shrunk, does the bulk of each payment start paying down principal.

That's why the first year of this loan sends about $1,332 to interest but knocks less than $1,000 off the balance, while the final year is almost all principal. It's the exact reverse of the gift, where the early years looked slow but were quietly building the base that powered everything later. Borrowing front-loads the pain; saving front-loads the patience.

The Timing

A gift at the start, or a bill at the end.

Step back and look at the calendar, because timing is the whole point. The grandparent's gift was made before the child could walk and did its growing during the eighteen years before tuition was due. The loan does its work on the opposite side of graduation: the family starts repaying after the money is spent and is still writing $194 checks for a decade — often while the now-grown child is launching their own adult life, and sometimes alongside the parents' own retirement saving.

And ten years is the standard schedule. Parent PLUS borrowers can stretch payments out longer to lower the monthly bill, but a longer term means more months of interest and a bigger total cost — the same trade-off that makes a long car loan or mortgage more expensive overall. Stretch the payoff far enough and a debt taken on at college can still be hanging around when the student is well into their late twenties or beyond.

The Takeaway

Saving early and borrowing late are the same math in reverse.

This isn't an argument that loans are bad — they open doors that would otherwise stay shut, and plenty of families use them wisely. It's that the cost of borrowing is real and easy to underestimate, and that a dollar saved early is worth far more than a dollar borrowed late. The grandparent's $5,000 didn't just become $14,700. It quietly replaced a $23,272 obligation that someone else would have spent a decade repaying.

That's the real reason to start early, and it's encouraging no matter where you're starting from. Every dollar set aside ahead of time is a dollar that grows on your side of the ledger instead of compounding against you on a lender's. Saving early and borrowing late are the same engine — so the sooner you can put money to work, the more it works for you, and the less of it ever has to work for the bank.

So add it up. A single $5,000 gift grows to about $14,700 — and because that money never has to be borrowed, it also spares the family roughly $8,600 in interest and fees over a 10-year loan. From one $5,000 check, that's about $23,000 of value, created across the roughly 28 years between the gift at birth and the last loan payment it quietly replaced. Pretty good — and it's one of the simplest ways ordinary families get ahead.