Pay your taxes this year with a rewards credit card, and you can EASILY get 2.63% cash-back. This is probably one of the sweetest tax tips I’ve come across in 2008!
Here’s an overview of how it works.

Apply for a credit card which pays 5% cash-back on ALL purchases in the first 3 months.
Pay your taxes [...]

AMEX is running a 5,000 rewards bonus deal. Sign up for the Green Business Rewards Card, make a purchase, and you will get 5,000 rewards points.
Don’t sweat if you don’t own a business. Just leave the federal tax ID field blank and your application will be treated as if you are a sole proprietorship. There [...]

CitiBank is running a credit card signup bonus on their Citi Professional Card with ThankYou® Network. I like this offer because it is very straightforward, there are absolutely no fees, and the card basically sells itself with its rewards program which provides 3 ThankYou® points for every $1 spent at restaurants, gas stations, and more.

How [...]

The Chase Freedom card offers you 3% cash back on what you spend at the top 3 categories.
Card Cash-Back Benefits
In addition, the Chase Freedom card has great cash-back benefits like 3% back at

grocery stores
gas stations and convenient stores
fast food restaurants
cable TV & Internet providers
drugstores
video stores
department stores

The way it works is that you will get 3% [...]

Southwest Airlines will give you a FREE domestic round-trip airline ticket for applying for their VISA Signature Southwest Credit Card.
Apply for the card, make a purchase, and Southwest Airlines will credit you with 16 Rapid Rewards Points, enough for a roundtrip airplane ticket!

I just spoke with my representative at American Express and she confirmed that Monday, October 15, 2007 is the last day to get in on the FREE $250 (or FREE Roundtrip Plane Ticket) sign-up bonus.
Quick Summary of the Deal

Apply for the AMEX Gold Card
Make a purchase & pay off your bill.
AMEX will credit you with [...]

American Express Business Gold Rewards Credit Card is offering a FREE domestic round-trip airplane ticket for signing up! This is by far, the most lucrative credit card sign-up offer I have EVER seen! Sign up for their credit card, make a purchase, and they will credit your account with 25,000 points, which is redeemable [...]

I’ve been researching ways to save money on gas, since gas where I live costs me $3.50+/gallon.
Using gas credit cards when filling up can save you a lot of money.
The American Express Simply Cash gas credit card gives 5% cashback on gas, cell phone bills, and office supplies. In addition, you get 1% cashback [...]

The Discover Platinum Gas Card pays 5% cashback on all Gas & automobile purchases.

* 5% Cashback Bonus on gas and everyday auto maintenance purchases
* 5% to 20% Cashback Bonus at top online retailers through our exclusive online shopping site
* Up to 1% Cashback [...]