The fastest way to raise your credit score is by reducing your balance to credit ratio. For example, if you have a $5000 limit credit card, but owe $4900, that will kill your score. Reducing that balance down to 0 or even $1000, would likely cause a jump of 40+ points or more in your score.ncrease your credit limits. The first simple and fast tip to raising your credit score is by increasing your credit card limits. If your balance is $4900 on your $5000 limit card, your balance to credit ratio is nearly 100%.