CHF 1,800 in interest or CHF 4,200 for exactly the same borrowed amount? The difference comes down to a few decisions made before signing. When you take out your first loan, every choice has a direct impact on your wallet. And most borrowers learn this too late.
Mistake #1: Borrowing without knowing your real capacity
"I earn CHF 5,500, so I can repay CHF 1,000 a month." This reasoning seems logical, but it forgets everything else. Rent, health insurance, taxes, groceries, subscriptions — once these are deducted, the available amount is often much lower.
The 33% rule is a good starting point: your repayment obligations shouldn't exceed one-third of your net income. For a salary of CHF 5,500, that's roughly CHF 1,815 maximum, housing costs included. If your rent is already CHF 1,400, you only have CHF 415 left for a loan.
Do the math before requesting a quote. Ask yourself: after the monthly repayment, am I living normally or just surviving? A loan that puts you under pressure every month always ends badly.
Mistake #2: Looking at the monthly payment without looking at total cost
This is the most common trap. Two offers for a CHF 20,000 personal loan:
Offer A proposes CHF 590 per month over 36 months at 4.5%. You pay CHF 1,240 in total interest. Offer B proposes CHF 370 per month over 60 months at 6.9%. You pay CHF 2,200 in total interest.
Offer B feels easier each month. But it costs you CHF 960 more over the full term. Almost a month's salary in extra interest, just because the monthly payment seemed lighter.
Always ask for the total cost of the loan and compare on that basis. The monthly payment is a comfort metric. The total cost is what you actually pay.
Mistake #3: Accepting the first offer
Your regular bank knows you, has your income details, and can make you an offer quickly. Convenient. But it's rarely the best offer.
By requesting quotes from three different institutions — your bank, an online lender, and a broker — you get a real picture of the market. On a CHF 25,000 car loan over 48 months, a 1% rate difference represents roughly CHF 520 in savings. For a few emails sent.
Competition between lenders works in your favor. Mention that you're comparing multiple offers: it often pushes your bank to improve their proposal.
Mistake #4: Ignoring hidden fees
The displayed interest rate is only part of the cost. Several fees get added on top, and they're not always highlighted.
Processing fees often run between 0.5% and 1.5% of the borrowed amount. On CHF 20,000, that can range from CHF 100 to CHF 300. Borrower's insurance, sometimes mandatory, adds a few dozen francs per month. And if you want to repay early, early repayment penalties can eat into your savings.
The number to ask for is the APR (Annual Percentage Rate). It includes all fees and gives you the true cost of the loan. A nominal rate of 3.9% can easily become an APR of 5.2% once all costs are factored in.
Mistake #5: Choosing the wrong term
The loan term is a powerful lever that many first-time borrowers underestimate.
For a CHF 15,000 personal loan at 4.9%: over 24 months, you pay CHF 657 per month and CHF 768 in total interest. Over 48 months, it's CHF 345 per month but CHF 1,560 in total interest. Double the term, double the interest.
The smart move: choose the shortest term that remains compatible with your monthly budget. If the 36-month payment works without stress, don't go for 48 months out of comfort. Those extra 12 months will cost you dearly.
Simulate before you sign, not after
A first loan takes preparation. And the best preparation is testing different scenarios before talking to an advisor. On Crezio, you can simulate your loan for free by adjusting the amount, term, and rate. In two minutes, you'll know exactly how much you'll pay — and you'll walk into the bank with numbers in hand, not just hopes.