Economical-minded consumers have always courted bigger savings by clipping the paper coupons published in flyers or given out at stores. Coupons can also be used online. These are the codes you type into a textbox asking you to enter promotional codes for benefits like free shipping or discounts.

Even the most savvy shoppers may be missing out because they simply don’t know how to find and use online coupons. Only 38% of households in the US are using online coupons for purchases.

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