Checkbook setup: Assigning MICR specification numbers for a checkbook

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Important reminder!

Licenses for Payroll CS, Trial Balance CS, and Write-Up CS (but not Engagement CS) permanently expired on March 1, 2017. CSA will not include 2017 tax rates or payroll forms, so, for 2017 and beyond, you will need to process payroll in another application. We recommend Accounting CS Payroll and myPay Solutions. For more information, see the following topics.

  1. If you are printing your own checks using check layouts for "magnetic ink character recognition" (MICR), click the MICR tab of the Setup > Checkbook dialog and enter numerals using the numeric keypad on your keyboard. (Use the supplied overlay to align the characters.) Enter special characters as indicated below:
    • Auxiliary ON US field, positions 44 - 63
      An optional field used on commercial checks at the discretion of the ON US financial institution. It is located to the left of the ROUTING field. This field must be bounded on the left and right by the ON US symbol (/_images/acct_pr/csa/micr_o.gif). Auxiliary On Us fields generally start at position 52. In the first line, which contains check number information, enter the On Us symbol in position 52 (press O), followed by 0 # # # # # and then another On Us symbol. (Press the TAB key to move from field to field.) The pound signs (#) indicate check number positions so that when you print your checks, the numbers will increase sequentially.
    • ROUTING field, positions 33 - 43
      The ROUTING number is the numeric identifier of the drawee institution as assigned by the American Bankers Association. The routing field is bounded on the left and right by the transit symbol (/_images/acct_pr/csa/micr_t.gif); press T on your keyboard to enter this symbol.
    • ON US field, positions 14 - 31
      Arrangement of the ON US field is specified by the financial institution on which the check is written. It may include such information as the user's account number, a consecutive number, and/or processing code information unique to the drawee. Press D on your keyboard to enter a dash symbol (/_images/acct_pr/csa/micr_d.gif).
  2. Click Enter to save the information.
  3. Click Done to close the Checkbook Setup dialog.


  • We provide an MICR verification overlay with our software to help you set up your checkbook information. If you did not receive an MICR verification overlay when you purchased your Payroll CS software, you can request one from our Customer Service department. Call 800.968.0600 and follow the prompts to reach Customer Service.
  • If you are unable to enter information in any of the fields, verify that you are using small fonts in your display properties settings.

See also: Checkbook Setup > MICR tab

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