I hope everyone knows that they should pay their credit card  bill on time. However, you might not know why you should.
The most direct reason is that the card issuer will charge a  late fee. Typically, this will be $29, but check your agreement for details. This  fee is over and above whatever new purchases you make and the associated  finance charges. It also gets added to your balance and therefore you get  charged interest on it.
Your issuer might up your interest rate for being late. Late  payments can take you out of the "in good standing" interest rate. Not  surprisingly, the interest rates for customers in good standing are lower than  for customers who aren't. You want to be in the good standing category.
After enough late payments, your issuer might put an entry  on your credit report. This can affect your interest rates for all of your  debts. It makes you look like a bigger risk, so your creditors will charge more  interest.
When it comes time to pay your credit card bill, the due  date listed on your statement does not mean the check has to be postmarked by  that date. It means the check has to get to the issuer by the date. To be safe,  you should plan for your check to arrive a day or two before that to allow for  processing delays at the issuer. Mailing your bill a week before it is due  should be safe, but if you live out in the middle of nowhere, you might want to  allow for more.
Team Yourcreditnetwork.com