There is no annual limit for the rollover and no monthly options available. You will have to pay taxes on the rollover at any age. Before you rollover you plan, consider a few factors. Only distributions from your 457(b) taken after you've left the employer sponsoring the plan can be rolled over. Because your 457(b) plan offers pretax savings, and Roth IRAs offer the promise of tax-free distributions, there are tax consequences, 20 percent of your distribution is withheld for taxes and whole amount of distribution has to be included in your taxable income.
