Like most things connected with personal finance, the area of credit cards is sometimes awash with jargon and impenetrable language. You only need to pass an eye over your credit card issuer's Terms and Conditions section of their web site to see how fond of technical language they are - in fact, cynics might suggest that card companies like to make their conditions as hard as possible to understand so that they can quietly change the way they operate your account without you noticing.

Although we're unlikely to see simplified wording in the near or even distant future, properly understanding a few of the more common terms will be a great help when you're reviewing the market to choose the best deal on your next credit card.

Allocation of Payments

This phrase refers to how your repayments are used to clear your debt. Although you are shown a single balance on your statement, your account is actually made up of various chunks of debt charged at different rates, for example purchases, balance transfers, and cash withdrawals. The allocation of payments sets out the order in which these debt chunks will be repaid. Normally, the cheapest rate of debt is repaid first - probably a 0% balance transfer - and this must be completely cleared before any of the more expensive debts will be reduced. For the credit card companies, this has the happy side effect of increasing the total amount of interest they earn on your account. For you, it means you should try and stay clear of the expensive forms of debt such as cash advances.

Interest Free Period

If you clear your credit card in full every month, and never carry any debt from one statement to the next, you will normally be able to enjoy a delay between spending on the card and being charged interest on what you've spent. This interest free period is also known as a grace period, and is usually in the region of 50 to 60 days.

Typical APR

The APR, or Annual Percentage Rate, is the basic measure of how much interest your card charges on your debt, and the lower the figure, the better. The Typical APR is the rate that at least two thirds of successful applicants will be offered, and was introduced to stop card issuers heavily advertising extremely low rates that in fact only a tiny minority of applicants would be offered.

Minimum Repayment

This is simply the smallest amount you have to pay each month after receiving your statement. It is normally in the region of 3% but has drifted inexorably down over the years, meaning that if you only pay the minimum it will take longer and longer to clear the debt, costing you dearly in terms of interest.

Cash Advances

These are an expensive way of using your credit card, either by withdrawing cash physically from an ATM using your card, or by using the card in some designated outlets such as casinos. The rate charged is normally much higher than the standard APR, and because of allocation of payments, cash advances will be the very last part of your debt to be repaid and will cost you the most in interest, and so for this reason they should generally be avoided.

There are dozens if not hundreds of other pieces of jargon related to credit cards and finance in general, but hopefully this article has cleared up a few unknowns for you and will be of assistance in choosing your next card wisely.