I'm interested in the economics and law of when this is counted as income.<p>The article says that in the general case, the company only counts the card as income once it is redeemed. Until then it is counted as a liability.<p>This makes a little sense, since they still owe you goods and services, but (1) aren't the goods/services they are offering worth less <i>to them</i> than the value on the card, and (2) aren't they generating interest off that?<p>Next, it says that under a 2009 law, the companies can start counting it as income sooner (6-24 months), and the accompanying article suggests that this is good for the companies' bottom line. But wouldn't it really be the opposite? Before they counted it as income, surely they had all the benefits of the money and it's not even being taxed as income yet? Wouldn't they want to hold off on counting it as income as long as possible?