Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Credit card transactions for personal finances
Other responses have focused on getting you software to use, but I'd like to attempt your literal question: how are such transactions managed in systems that handle them? I will answer for "double entry" bookkeeping software such as Quicken or GnuCash (my choice). (Disclaimer: I Am Not An Accountant and accountants will probably find error in my terminology.) Your credit card is a liability to you, and is tracked using a liability account (as opposed to an asset account, such as your bank accounts or cash in your pocket). A liability account is just like an asset except that it is subtracted from rather than added to your total assets (or, from another perspective, its balance is normally negative; the mathematics works out identically). When you make a purchase using your credit card, the transaction you record transfers money from the liability account (increasing the liability) to the expense account for your classification of the expense. When you make a payment on your credit card, the transaction you record transfers money from your checking account (for example) to the credit card account, reducing the liability. Whatever software you choose for tracking your money, I strongly recommend choosing something that is sufficiently powerful to handle representing this as I have described (transfers between accounts as the normal mode of operation, not simply lone increases/decreases of asset accounts).