While Box 1 of Form 1099R shows the total amount received during the tax year from a pension, annuity, retirement or profit sharing plan, IRA or insurance contract, box 2a will generally show: Question 4Select one: a. The part of the distribution that is taxable b. The amount of tax withheld on the distribution from box 1 c. The amount of the required minimum distribution d. The part of the distribution that is not taxable