Here's how it works: Say you receive a car, RV or boat loan through a credit union with which you also have a credit card. In the fine print of the loan contract, you'll probably see that your credit card balance is secured by the auto, RV or boat.ere's how it works: Say you receive a car, RV or boat loan through a credit union with which you also have a credit card. In the fine print of the loan contract, you'll probably see that your credit card balance is secured by the auto, RV or boat.
If you've made nondeductible contributions to your traditional IRA, you have to use Form 8606 to figure the taxable and nontaxable portion. Otherwise, the entire amount is taxable. In addition, if you take a taxable non-qualified withdrawal, you'll have to figure the 10 percent additional tax with Form 5329.
Contributions into a Roth 401(k). Contributions to a Roth 401(k) or Roth IRA are not tax-deductible. Traditional 401(k) or IRA contributions provide participants with a tax deduction in the year when the contributions are made. Roth 401(k)s do not provide this benefit.