CRNs/IRNs for Form 941 (MFT 01)

Form 941, Employer's QUARTERLY Federal Tax Return, is used to report the employer share and employee share of social security tax and Medicare tax, withheld federal income tax, and, if applicable, withheld Additional Medicare tax.

All increases and decreases in tax must use reference numbers for employment tax returns. See the table below for Form 941 item reference numbers.