If you contribute to a retirement plan at work, those contributions will be reported on your W-2 and you do not enter them anywhere else in the program.
An IRA is a retirement account that you would open for yourself at a bank or broker, and make contributions by check or direct deposit from your bank account. A 401(k) or 403B is an employer sponsored retirement accounts that can only be contributed to by payroll deduction. A 401(k) and an IRA are not the same thing, they are under different IRS regulations and have different rules.
private IRAs or workplace retirement accounts can hold almost any kind of investment instrument, so the name of the investment fund does not tell us anything about what kind of account it is held in.
