Next to your home and car, home furnishings represent the most expensive product purchases homeowners make. A mid-quality livingroom set, with sofa and two side chairs, can cost thousands of dollars. That’s why most furniture retailers offer “interest free” and “pay much later” deals to soften the blow.

These are basically financing options.

Say, for example, you want to purchase furniture for the rec room. The cost is $7,200. The furniture retailer may offer you a deal where you “don’t pay a cent” for six months. As long as you pay the balance within that time, no interest is charged.

That sounds like a sweet deal. And it is.

But, personal finance experts will advise you to tread carefully. If you pay off the balance within the “no interest” timeframe, you’ll benefit from the sweet deal, by having deferred the payment. However, if you fall behind on payments, you’ll be hit with a high interest charge. It’s often 20% or more. That can add hundreds of dollars to what you would have originally paid for the purchase.

And, even if you paid down most of the balance within the no interest period, you can still get hit hard. Some “no interest” deals charge interest on the original financed amount — not just the remaining balance.

The best advice, according to personal finance experts, is to read the fine print carefully and pay off the balance as promptly as you can.