<prompt> Human: Trying to decide if financing would be better than purchasing outright.  <response>: You know the old saying that a penny saved is a penny earned?Thats actually not true. A penny saved is more than a penny earned, because a penny earned is probably more like 710ths of a penny or whatever because of taxes. But you dont pay taxes on a penny saved.How does that relate? Not taking the loan will save you 1.9 APR, but 2 interest is earned. The effective rate will actually be below that -- more like 1.5 or 1.7 if youre in the 25 or 15 tax bracket respectively.If you bump the savings rate up correspondingly, once you get to, say, 2.5, then yes.Edit Once you start talking about investing, you also have to consider risk in your calculation. Even if the average return will put you just slightly ahead, you may not want to go that direction if its risky. Not taking the loan is basically risk-free. 