The 5 Year Roth Conversion Ladder a 52 Year Old Can Use to Access $40,000 a Year of Retirement Funds Penalty Free at 57  24/7 Wall St.A 58 Year Old With $2.2 Million in a 401(k) Has Five Years to Execute the Roth Conversion That Saves $315,000 in Lifetime Taxes  Yahoo FinanceThe $39,200 Tax Cost That Saves $100,000 Later: A 401(k) Strategy for 60-Year-Olds  AOL.com40-Year-Old Couple Faces $1.3 Million Retirement Tax Bomb  ParadeRoth conversions don’t always pay: 3 signs it’s the wrong move for you  MSN