Here is a simple test. (This is not 100% accurate mathematically, but it is an easy test). Divide your credit card interest rate by 12. (Imagine a credit card with a 12% interest rate. 12%/12 = 1%). In this example, you are paying about 1% interest per month. If the fee on your balance transfer is 3%, you will break even in month 3, and will be saving money thereafter. You can use that simplified math to get a good guide on whether or not you will be saving money.
Now, let’s take this a step further; one of the biggest misconception of this industry is that one’s credit score and credit report are the same thing.  The truth is, both concepts are gravely different. A credit report is a mere profile of your entire credit history – including all your positive and negative moments. This report is held and created by the three credit agencies, or bureau: Equifax, Experian, and Call Credit.  It’s here that lenders can discover if you’ve missed a payment, how many loans you have taken out, and even how reliable you are. On the other hand, a credit score is a number that derives on five different factors from your credit report, which leads us to our next significant section.
When negative information in your report is accurate, only time can make it go away. A credit reporting company can report most accurate negative information for seven years and bankruptcy information for 10 years. Information about an unpaid judgment against you can be reported for seven years or until the statute of limitations runs out, whichever is longer. The seven-year reporting period starts from the date the event took place. There is no time limit on reporting information about criminal convictions; information reported in response to your application for a job that pays more than $75,000 a year; and information reported because you’ve applied for more than $150,000 worth of credit or life insurance.
With poor credit, you may not be able to get approved for new credit products like credit cards. Although you may still be able to take out an auto loan or a mortgage, you’ll pay a much higher interest rate because of your low credit score. Compared to a borrower with good credit, someone with poor credit can pay $50,000 more in interest on a mortgage. Over an entire lifetime, you could end up paying over $200,000 more in unnecessary interest just because of bad credit.