This is a convenience that saves time and money. You save costs for postage and transporting your bill to the post office. You also avoid the risk of your bill getting lost or delayed in the mail which might trigger late fees. Always protect your password when you use online financial accounts and never access those accounts from public computers.
Avoid Missed and Late Payments
Interest and late payment fees can quickly escalate your costs for credit and negate any benefit of rewards. Understand any triggers that cause higher default interest rates to kick in.
Use Grace Periods
Many business credit cards come with a 21 day grace period giving a total 51 days to pay. Take advantage, this amounts to an inexpensive, unsecured short term loan that you can use for extra working capital if needed.
Avoid Cash Advances
Cash advances normally incur higher fees than credit card purchases and it's a good idea to avoid them to reduce your cost of credit. On the positive side many cards have introductory offers of 0% APR for cash transfers. You can realize a huge savings taking advantage of this if you are already paying interest on a substantial balance.
Avoid Applying for Many Cards
Resist the temptation of applying for more credit cards just to take advantage of introductory offers. Card hopping can lower your credit score. Sometimes it makes sense to get a new card based on rewards or balance transfer offers but do this sparingly.