Why people borrow

Borrowing gets a bad reputation, and plenty of it is earned. But loans exist because they solve a real problem: some of the most useful things in life cost more than almost anyone can save before they need them. The skill is telling a good reason to borrow from a trap dressed up as one.

Borrowing moves money through time

A loan takes money from your future self and gives it to your present self. That trade makes sense when the thing you buy is worth more to you now than the interest costs you later. A home you live in for decades, an education that lifts your income for a working lifetime, a reliable car that gets you to the job that pays for it. In each case the borrowing buys something that keeps paying you back.

The maths of waiting versus borrowing

Put two versions of the same choice side by side. Say you want a $2,000 laptop. In the first version you save $200 a month and buy it outright after ten months, having paid exactly $2,000. In the second you put it on a card at an illustrative 20% a year and pay it off at $100 a month. That version takes about 25 months and costs roughly $2,450 in the end, so the same laptop costs about $450 more and you carry the debt for more than two years. The figures are illustrative, but the lesson is not: borrowing for something you could save for turns a fixed price into a larger, slower one.

The reasons that usually hold up

• A home, because saving the full price of a house first would take most of a working life.
• Education, where in Australia HECS HELP lets you study now and repay through the tax system once you earn enough.
• A modest reliable car, when it genuinely unlocks work or study you could not otherwise reach.
• A business or tools of trade, where the borrowed money is put to work earning more than it costs.

The traps

The trap version of borrowing funds a lifestyle rather than a future: holidays, clothes, upgrades and nights out, paid for with money that has not been earned yet. The purchase is gone in weeks, but the repayments hang around for years, quietly eating the income that could have been building something. The worst of the traps are payday loans, small fast loans whose fees can add up to an equivalent cost far above 100% a year. They are marketed to people in a tight spot, and they nearly always make the spot tighter.

The test is not whether you want the thing. It is what the thing will be worth when you are still paying for it. If the honest answer is nothing, the loan is a trap, however friendly the advertising sounds.

A misconception worth clearing up

Plenty of people land on one of two extremes, and both are wrong. One says all borrowing is reckless, which would rule out most homes and most degrees and leave you renting money from a landlord instead of a bank. The other says borrowing is basically free money, as long as the monthly repayment fits. It is not free, because every repayment carries interest, and the fact that a payment fits this month says nothing about the total or about the months when your shifts get cut. The useful position sits between the two: borrowing is a tool, sharp and worth respecting, good for a few jobs and dangerous for the rest.

What this looks like in your life

You will feel this pressure long before you take a real loan. A group chat fills up with plans for a festival, the tickets are on a buy now pay later plan, and everyone is signing up. The clothes you want are one tap away on the same kind of plan. None of it feels like borrowing, because there is no bank and no paperwork, but it is, and the test from this lesson still works: will the festival, or the outfit, be worth anything to you while you are still paying it off? If the honest answer is no, the plan is a trap wearing a friendly app.

The next lessons sort borrowing into families, so you can tell a home loan from a car loan from a payday loan, and the good debt lesson later gives this same test a sharper edge.