Originally Posted by
El Boocho
Agreed, it is a good option if you pay estimated taxes. It's much cheaper than mileage runs to hit the normally $9K PM MQDs. 2% of 25K is $500. Assume the DL Plat Amex: This year you get 25,000 to 37,500 skymiles (depending on the card you use) plus the 12,500 MQMs. Even at 25,000 skymiles and the value of the miles at .01 each, the total value of the miles is at least $250. Your call if the 12,500 MQMs are worth $250 and a whole lot of time saved, but to me it is. Plus you get an upgrade tie breaker by achieving the waiver threshold. Really, there is no little reason to hold the DL Amex cards if you aren't getting the MQMs. To me, the companion tickets are nice, but generally do little more than offset the annual fee.
Anyone can (over) pay estimated taxes, you get the excess as a credit from IRS the next year.
[Giving the IRS an interest free loan is normally not considered prudent, but with short term interest near 0%, it isn't that bad.]