A few days ago, my husband and I were sitting at the kitchen table taking care of a few household things like bills, etc., when he kind of chuckled. It was more like a derisive snort, actually, so I looked up from my work and asked him what was wrong.

“Nothing,” he replied. “I just find it interesting that this bill says that if we pay only the minimum payment each month, it’ll take us 19 years to pay it off.”

I did one of those cartoonish head shakes and said, “Umm . . . what?!” It’s true.

Last December we bought all new kitchen appliances: a fridge, dishwasher, stove/oven range, and range hood. It was time. We were, literally, waiting for the day when they would just up and quit on us. So we researched brands, stores, and prices, and settled on a whole set that cost us $3589.96, which included tax, delivery, and installation. It was a good deal on some great appliances, and to top it off, we took their offer of 2 years interest-free financing.

So here’s the thing. On the bill, it says that the minimum payment is $100, and that it’s required. Okay. It also says that if the balance isn’t paid within those 2 years, “interest will be imposed from the date of purchase”. That means that 2 years of interest will then be owed. Ugh. Now, here’s what my hubby found ‘amusing’ . . . it informs us that if we pay only the minimum payment, and make no other charges on the account, we’ll pay it off in about 19 years and it will cost approximately $12,649. WHAT?!?!?! Holy cow! Seriously? We both shook our heads in disbelief. We’d pay $12,600 for something that’s only $3600??? That’s 3 1/2 times the original purchase price! How does that happen? Well, they tack on the 2 years of interest and keep adding interest every day until it’s paid off. Sneaky, huh?

Were we surprised? Absolutely. Were we scared? Not in the least. Why? Because we don’t figure our ‘minimum payment’ the same way the store does. Let me explain . . .

When we talked about buying new appliances, we estimated what the total cost would be before we even went shopping, and figured out what we could comfortably afford. Then, when we found what we wanted and sat down with the sales associate, the total came to $3589.96. We knew the terms of the promotion: we had 2 years interest-free financing. That’s 24 months. We rounded it up to $3600, then divided by 24. That came to $150 per month. That’s our minimum payment. Not $100. We know that if we pay $150 per month, we’ll pay off the $3600 within 2 years and won’t have to pay the interest. Simple.

So if you’re looking to buy something and take advantage of some kind of financing, don’t rely on what they say is the minimum payment. Figure out your true minimum payment so that you can pay it off in plenty of time and avoid fees and interest that could end up costing you way more than it’s worth. Here’s the equation: Round the total price to the nearest hundred (or thousand, depending), then divide by the number of months defined in the financing terms. This will give you the amount you’ll need to pay each month. For example, let’s say you’re thinking of buying a living room set. The total cost is $1487.32 and you’re going to finance it for 18 months. Round it up to $1500 and divide by 18. That comes to $83.33 per month. If you make monthly payments of $85, you’ll pay it off in time – without penalties or fees. Just remember to ask yourself if it’s something you can afford. If not, then I suggest you reconsider. Either don’t buy it or find something in your price range.

It’s simple math, but it could end up saving you thousands.