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.
While your Roth IRA contributions are not tax deductible, you can claim a Roth IRA tax credit on IRS Form 8880 of up to 50% on your first $2,000 in Roth IRA contributions if your income falls within the predetermined income limits.on-Deductible Roth IRA Contributions. Unlike 401k or Traditional IRA contributions, Roth IRA contributions are not tax deductible. According to the Roth IRA funding rules established by the IRS, all your contributions must be made with after-tax dollars.