WISCONSIN PAYROLL AND SALES TAX                          ID NUMBERS REQUIRED                       SS-4             Federal Id number              BTR-101       Application for Business Tax Registration                                               (Wisconsin)              UCT-1          Wisconsin Employer Report                                            (State Unemployment)                                                      SALES TAX                       ST-12         Due monthly, quarterly, or annually                                 depending on amount of tax due                                                                PAYROLL                                          FEDERAL                         Circular E  Rules and regulations                W-4          Withholding allowance certificate                                  (students may be able to file "exempt")                I-9             Employment Eligibility Verification                8109-B      Deposit slip used to send taxes including                                  withholding and fica to IRS                941            Quarterly return of withholding & fica                940            Annual unemployment tax return                W-2           Employee earnings statement                W-3           Summarizes total of W-2s                       WISCONSIN                         W-166       Wisconsin Employer's Withholding Tax Guide                WT-4         Employee Wisconsin Withholding Exemption                                  Certificate/New Hire Reporting                WT-6         Deposit report due monthly, quarterly, or                                  annually depending on amount                WT-7        Annual reconciliation of wage withholding                UC-101     Quarterly Contribution/Wage Report                                                 WORKERS COMPENSATION INSURANCE                       Required by all employers and obtained from your business              Insurance carrier.