Employees can elect to contribute to qualified plans on a pre-tax basis via withholdings from their salaries. Money invested in a qualified plan can grow tax-free. Plan administrators are allowed, though not obligated, to issue loans to employees who contribute to qualified plans. These loans enable employees to borrow cash from their own retirement funds. Early withdrawals (those made before the plan beneficiary reaches age 59 ½) from qualified plans are typically, with some narrow exceptions, subject to tax penalties.
It's important to note that there are other types of retirement plans that provide similar tax benefits to qualified plans, such as traditional and Roth Individual Retirement Accounts (IRAs).
Because these plans are used to save for retirement by individuals, rather than established by employers in accordance with IRS and ERISA rules, they are not considered qualified. However, a traditional IRA and Roth IRA do come with tax advantages including tax-free growth and other favorable tax treatments. Contributions to traditional IRAs are tax-deductible and withdrawals from Roth IRAs are tax-free.