Deposit - Money transfered "INTO" a bank account
ACH - Stands for "Automatic Clearing House" (There are seven of these in the United States)
IRS - Stands for "Internal Revenue Service"
TREAS - United States Department of the Treasury (of which the IRS is but one component of.)
310 - Not sure, but this particular code is believed to indicate a successful and full refund deposit with no offsets being withheld "AFTER" it was transmitted by the IRS. Note that if there is an offset on your refund "with" the IRS, this will still be "310" because the amount transmitted by the IRS to your account *did* *not* *change* from the amount deposited into the bank account.
(TAX REF) - Federal Tax Refund. (does not include state refund if one is due.)
