See the Numbers for Yourself
In the book, I break down exactly what bad credit costs you—and what good financial decisions can build over time. These calculators let you plug in your own numbers and see it for yourself. Because the decisions you make about money right now will echo for decades. Make them count.
“When I went to buy my first real car—a 1998 Buick Park Avenue, $6,500—the interest rate was 13%. I remember sitting in that dealership, signing those papers, and doing the math in my head. I was paying so much money in interest.” Do the math: 13% interest on that $6,500 loan over five years meant roughly $2,374 in interest alone—paying nearly $8,874 total for a $6,500 car.
This is amortization. Early in your loan, most of your payment goes to interest—not the car. You’re paying the bank before you’re paying yourself.
“Good credit at 5%: your total cost is $289,800. Bad credit at 8.5%: your total cost is $415,080. That’s $125,280 more over the life of the loan. Read that number again.”
On a 30-year mortgage, you can pay more in interest than the house itself. Look at how much of your early payments go straight to the bank. This is why credit score matters so much.
“The power of compound interest is real. Money you invest in your 20s is worth exponentially more than money you invest in your 40s. Small decisions. Compounded over time. Big impact.”
“Your credit score is your financial reputation. It follows you everywhere—apartments, car lots, job applications. Nobody teaches you this in school, but it’s one of the most important numbers in your life.”
“Nobody sits you down after graduation and says, ‘Here’s how to manage a paycheck.’ You get that first real check and it feels like a lot—until rent, food, a car payment, and a phone bill eat it alive. A budget isn’t about restricting yourself. It’s about knowing where your money goes so you can make it work for you.”
Disclaimer: These calculators are provided for educational and illustrative purposes only and do not constitute financial, investment, tax, or legal advice. All results are estimates based on the information you enter and standard mathematical formulas. Actual loan terms, interest rates, and investment returns will vary based on your creditworthiness, lender, market conditions, and other factors. Consult a qualified financial advisor, tax professional, or licensed lender before making any financial decisions. Corey L. Cook and Cook Media LLC are not responsible for any financial decisions made based on these calculators.