2010 Standard Mileage Rates The 2010 standard mileage rates used to calculate the deductible costs of operating an automobile.   50 cents per mile Business miles 16.5 cents per mile Medical or moving miles 14 cents per mile Charitable miles Social Security Wage Base For 2010 and 2009, the Social Security wage base is $106,800. Retirement Account Information Contribution limits for 2010 and 2009: Traditional & Roth IRA Under age 50 $5,000   Age 50 & over $6,000 401(k) & 403(b) Under age 50 $16,500 maximum deferral   Age 50 & over $22,000 maximum deferral Simple Under age 50 $11,500 maximum deferral   Age 50 & over $14,000 maximum deferral SEP Maximum contribution $49,000