A blank copy of the C-51 - Field Audit Report is located in the Appendix Section of this manual.
The information below corresponds to numbered
items on the Form C-51 - Field Audit Report. For
Form C-51 - Field Audit Report to be accurate,
the Auditor must address the correct audit scope
during the audit investigation. Refer to the Audit
Manual - Table of Contents to locate other
chapters of this manual that have instructions
for determining the correct audit scope.

Items 1 to 7 and 9 are downloaded from the Tax system.
EMPLOYER INFORMATION - Section of the C-51
- Employer's TWC Account No.: Enter the
employer's 9-digit account number.
- Federal Id No.: Enter the employer's
9-digit Federal ID Number.
- Employer: Enter the employer's account
styling (line 1 of EMF) and the employer's zip
code. If truncated by audit program, auditor is not required to complete.
- Nature of Business/NAICS:
The nature of the employer's business (e.g., trucking company, restaurant, crew leader),
and NAICS code. If this information is not downloaded, auditor can select the appropriate
NAICS code from the list on the Employer Tab to complete these items. If the NAICS
code is incorrect, DO NOT correct the downloaded information. LMI (Labor Market Information)
is responsible for this information; therefore any changes to this item will not post to the
Tax system. The auditor can enter a comment that they instructed the employer/representative
to contact the TWC NAICS – help line so they can obtain the appropriate form(s) to update
the information.
- Type of Business: Check the appropriate
box to indicate the type of business.
| Individual = |
Individual Owner or Sole Proprietorship |
| Partnership = |
Partner |
| Corporation = |
Corporation |
| Other = |
Other type of business entity. Indicate
the type, for example: Trust, Joint Venture,
Association, Estate, Limited Liability Company |
- How was ownership verified? Select from the list to indicate how the ownership of the business was verified. Selecting "Other Documentation" will require the auditor to enter comments to explain how ownership of the business was verified.
Business ownership may be verified by examining business licenses, professional license of a sole
proprietor, partnership agreements, corporate charters, state sales tax permit, Sec. of State information,
or income tax returns. If license information was obtained via the web attach a copy to
the audit work papers.
The Auditor must be specific about which income tax return, or license was examined (1120
- corporation, 1120S - subchapter S corporation, 1040 - Sch. C, E or F - individual or LLC with
single individual as member, business expenses, 1065 – partnership & LLC with multiple
members, state sales tax license, comptroller franchise tax report; etc.). The
year of the tax return must also be listed on #8 of the C-51 audit report form.
Asking the employer who owns the business is
not acceptable in verifying the ownership of
a business. Verification of the ownership may
not be accomplished by examining the employer's
copies of federal Forms 940, 941,and 943, state
unemployment tax reports, W-2 or W-3 forms, or
sales tax reports (although the sales tax license
may be used).
If a federal tax return is used to verify ownership,
the return should be for the year that is being
audited. Using a tax return for a prior year
may not provide the most recent ownership information,
and by relying on outdated information, the Auditor
may overlook important ownership questions, such
as:
These types of ownership questions cannot be
answered by reviewing a previous year's tax return.
If the business uses a “fiscal year” on their tax return which differs or does not
completely cover the year that is being audited, use
ALL other means to verify
the ownership. If
ALL other means to verify ownership have been exhausted,
a fiscal year tax return may be used, but
must be fully explained in the audit workpapers.
If the audited year's tax return is not available, use
ALL other
means to verify the ownership. If
ALL other means to verify ownership have been
exhausted, a prior year's tax return may be used, but the reason why it is being used to verify the
ownership of the business
must be fully explained in the audit work papers.
Finding corporate charter information on website maintained by the Secretary
of State or the Comptroller of Public Accounts that confirms the ownership of a corporation is sufficient.
Corporate Charter must be active during the period audited, TPS will not accept
a forfeited charter as ownership verification, even if the employer states they will or have renewed
the charter.
Print the information and include it in the audit work papers.
Verifying the ownership of domestic employment or the ownership of a farm
or ranch may be accomplished through reviewing the accounting records and cancelled checks of the employer. The
ownership of domestic employment may also be accomplished by reviewing federal tax return Form 1040
- Schedule H.
Reference:
Chapter 7 – "TPS Acceptance Sample Rationale", Question 3 for additional information.

QTR/Yr, Tax Rate will be automatically entered from downloaded data.
- Audit Date: The date of the audit, default is the current date, auditor can change as
necessary. This is the scheduled date printed in the audit letter for doing the audit. If
the audit was postponed, it is the date the AE appeared at the employer's office or the bookkeeper's
office to conduct the audit, or the date an employer showed up at the Tax office for an in-office
audit. If the Auditor finds it necessary to contact the employer for additional records,
the audit date would be the last date the Auditor dealt with the employer or the employer’s
representative.
- Audit Scope: The period of time that covers the records audited, such as 1/1/20YY to
12/31/20YY, and not the quarters covered. This item is completed by the audit program from the
years the auditor works on. It can be changed by the auditor if necessary. Reference Chapter
1 - "Tolerance ⁄ Expanding the Audit" for information on audit expansion
criteria.
* * * * * Items 12 to 23 are automatically entered from data in the program. * * * * *
- Audited Total Wages: Enter the total
wages audited for each quarter of the audit period.
- Underreported Total Wages: Enter the
total wages underreported for each quarter of
the audit period.
- Audited Taxable Wages: Enter the taxable
wages audited for each quarter of the audit period.
- Underreported Taxable Wages: Enter
the taxable wages underreported for each quarter
of the audit period.
- Audited Tax: Enter the tax audited
for each quarter of the period audited.
- Underreported Tax: Enter the tax underreported
for each quarter of the period audited.
- Reported Total Wages: Enter the total
wages reported by the employer for each quarter
of the period audited.
- Overreported Total Wages: Enter the
total wages overreported by the employer for
each quarter of the period audited.
- Reported Taxable Wages: Enter the taxable
wages reported by the employer for each quarter
of the period audited.
- Overreported Taxable Wages: Enter the
taxable wages overreported by the employer for
each quarter of the period audited.
- Reported Tax: Enter the tax reported
by the employer for each quarter of the period
audited.
- Overreported Tax: Enter the tax overreported
by the employer for each quarter of the period
audited.
NOTE: Do not net the over and under reported
amounts for total wages, taxable wages, or tax.
Show the overreported and the underreported amounts
separately.

Use this section to provide additional information
or comments regarding any of the previous answers.
The Comments section should be used when:
A blank copy of the C-51B - Field Audit Report (Continuation) is located in the Appendix Section of this manual.
The information below corresponds to numbered items on the Form C-51B - Field Audit Report (Continuation).
This form is used when the audit meets the expand audit criteria. Reference: Chapter
1 – "Tolerance⁄ Expanding the Audit" for additional information.

Items 1 to 4 are downloaded from the Tax system.
- Tax Area: the Auditor's 2-digit Tax Area number.
- Auditor No.: Auditor's AE ID number.
- Employer's TWC Account No.: The employer's 9-digit account number.
- Employer: The employer's account styling (line 1 of EMF) and the employer's zip code. If truncated by audit program, auditor is not required to complete.

QTR/Yr, Tax Rate will be automatically entered for each expanded year of the audit.
* * * * * Items 12 to 23 are automatically entered from data in the program. * * * * *
- Audited Total Wages: The total wages audited for each expanded quarter audited.
- Underreported Total Wages: The total wages underreported for each expanded quarter audited.
- Audited Taxable Wages: The taxable wages audited for each expanded quarter audited.
- Underreported Taxable Wages: The taxable wages underreported for each expanded quarter audited.
- Audited Tax: The tax audited for each quarter expanded quarter audited.
- Underreported Tax: The tax underreported for each expanded quarter audited.
- Reported Total Wages: The total wages reported by the employer for each expanded quarter
audited.
- Overreported Total Wages: The total wages over reported by the employer for each expanded
quarter audited.
- Reported Taxable Wages: The taxable wages reported by the employer for each expanded quarter
audited.
- Overreported Taxable Wages: The taxable wages over reported by the employer for each expanded
quarter audited.
- Reported Tax: The tax reported by the employer for each expanded quarter audited.
- Overreported Tax: The tax over reported by the employer for each expanded quarter audited.

Multi Year Totals
This section displays the totals for each item in the expanded audit year(s).
Comments & Narrative (Continued)
Use this section to provide additional information or continue comments from Form C-51 Field Audit Report.
Reference: Chapter 4 – "Comments & Narrative
section of the C-51" for additional information.