Like most other creditors, Uncle Sam accepts credit cards.
Two private firms, Official Payments and Link2Gov, have contracted with the IRS to process charged tax payments. Both accept American Express, Discover, MasterCard or Visa. You can use your credit card regardless of whether you file by mail or electronically.
While handy, the credit option does have other costs. Both companies collect a fee of around 2.5 percent of your payment amount.
You also need to handle your credit card account wisely. The payment to the IRS will add to your account's balance; if you don't pay it off in full, additional interest charges by the card issuer will accrue.