According to Purdue University, the abbreviation for the word "accounting" is "ACCT." Sometimes all capital letters are used, but punctuation is always included. The accounting field uses several abbreviations for terms common to the profession.
The word "account" also uses the abbreviation "ACCT." in some contexts, but this word usually follows the abbreviation "ACC." As a plural, the abbreviation "ACCS." is used for "accounts." "Accounts" also uses the abbreviation "ACCTS." in some contexts. While these abbreviations work for the terms "accounting," "account" and "accounts," each accountant or organization may have its own preferences for the abbreviation it likes to use in its operations.