Can you clarify your question? I am having difficulty understanding what you are asking.
If you received Gross Income of of $27,000, and your net bank deposits were about $20,000, that could be corect. The $7000 difference is from (1) insurance, (2) 401k, (3) Social Security taxes, 4) Medicare taxes, (5) Federal income tax withholding, (6) State income tax withholding, and possibly some other things.
Box 1 of your W-2 should not show the 'net' it should show the 'gross taxable' amount.
