Retirement tax questions

doing my S Corp taxes tonight. I am the only employee. I have an accountant who does my quarterly payroll. He sent my W-2. I know that he has me doing $2200 for retirement.  Box 12a and Retirement Plan checked. The difference between Box 1 wages and Box 3 SS wages is the $2200.  I just need to know which number to use for my S Corp return 'Wages'.  Thanks a million.