alert-icon
Only limited material is available in the selected language. All content is available on the global site.

Visit our global site in English, or select an alternative location or language below

  • Americas
  • Europe
  • Asia & Pacific
Brazil
Home page:
  • Portuguese
Canada
Home page:
  • English
  • French
Latin America
Home page:
  • Spanish
United States
Home page:
  • English
Current Page:
  • English
Belgium
Home page:
  • Dutch
  • French
Czech Republic
Home page:
  • Czech
Denmark
Home page:
  • Denmark
France
Home page:
  • French
Germany
Home page:
  • German
Hungary
Home page:
  • Hungarian
Italy
Home page:
  • Italian
Netherlands
Home page:
  • Dutch
Norway
Home page:
  • Norwegian
Poland
Home page:
  • Polish
Portugal
Home page:
  • Portuguese
Romania
Home page:
  • Romanian
Slovakia
Home page:
  • Slovak
Spain
Home page:
  • Spanish
Sweden
Home page:
  • Swedish
United Kingdom
Home page:
  • English
Australia
Home page:
  • English
China
Home page:
  • Simplified Chinese
Hong Kong
Home page:
  • English
India
Home page:
  • English
Japan
Home page:
  • Japanese
Malaysia
Home page:
  • English
New Zealand
Home page:
  • English
Philippines
Home page:
  • English
Singapore
Home page:
  • English
South Korea
Home page:
  • English
Taiwan
Home page:
  • English
Thailand
Home page:
  • English
Vietnam
Home page:
  • English
Wolters Kluwer Logo
    • Health

      • UpToDate

        Industry-leading clinical decision support

      • Ovid

        Medical research platform

      • UptoDate Lexidrug

        Evidence-based drug referential solutions

      • Simplifi+ Pharmacy Compliance

        Pharmacy compliance solutions

      Health Overview

      Tax and Accounting

      • Tax & Accounting U.S. Hub

        Central hub for all U.S. solutions

      • CCH Axcess™ Suite

        Cloud-based tax and accounting solution

      • CCH® ProSystem fx®

        Integrated tax and accounting software

      • TaxWise®

        Tax preparation software for tax preparers

      Tax & Accounting Overview

      Financial & Corporate Compliance

      • CT Corporation

        Registered agent & business license solutions

      • Compliance Solutions

        Loan, regulation, and investment compliance

      • BizFilings

        Small business incorporation services

      • eOriginal

        Electronic signatures and digital transaction management

      Financial & Corporate Compliance Overview

      Legal & Regulatory

      • VitalLaw®

        Legal research database for attorneys

      • Legisway

        Legal management software for legal departments

      • Enterprise Legal Management

        Legal spend and matter management

      • Mediregs

        Medical coding and healthcare compliance

      Legal & Regulatory Overview

      Corporate Performance & ESG

      • CCH Tagetik

        Unified performance management software

      • Enablon

        Software solutions for EHS, ESG & operational excellence

      • Teammate

        Audit and assurance solutions

      • Corporate Tax

        Direct and indirect tax software solutions

      Corporate Performance & ESG

      Useful Links

      • Solutions Directory
      • Product Login
      • eShop
      • Solutions

        • Clinical practice
        • Medical research
        • Education and training
        • Data and compliance
        Health Overview

        Roles

        • Hospital technology leaders
        • Nursing leaders
        • Clinical leaders
        • Pharmacy leaders
        • Health plan executives
        • Medical librarians
      • Solutions

        • Tax solutions for accounting firms
        • Tax solutions for tax prep offices
        • Accounting & audit solutions
        • Research solutions & resources
        Tax & Accounting Overview
      • Solutions

        • Registered agent solutions
        • Compliance solutions
        • Incorporation services for entrepeneurs
        • Business license solutions
        • Electronic signatures and digital transaction management
        Financial & Corporate Compliance
      • Solutions

        • Enterprise legal management
        • Legal research database for attorneys
        • Management software for legal departments​
        • Integrated practice management for law firms
        Legal & Regulatory Overview
      • Solutions

        • Corporate performance management software
        • Environmental, Health & Safety (EHS) Software​
        • Audit management & assurance solutions
        • Corporate tax solutions
        Corporate Performance & ESG Overview
    • Business Insights Hub

      Unlock future-ready Insights and navigate the complexities of today's business world with confidence. Wolters Kluwer’s Business Insights empowers professionals and decision-makers to stay ahead of the curve through innovative thinking, analysis, and expert insights to drive your business forward.

      Visit the Insights Hub

      Featured Reports

      • Future Ready Accountant
      • Future Ready Healthcare
      • Future Ready Lawyer

      Trending Topics

      • Artificial Intelligence
      • Business Transformation
      • Data Analytics & Reporting
      • Decision Making & Productivity
      • Risk & Regulatory Compliance
      • Insights

        • Pharmacy change management: A guide to IV workflow technology implementation and adoption
        • Joint Commission Accreditation 360 implications for nurse leaders
        • Strengthening program efficacy by monitoring the diversion of non-controlled substances
        • Courage to innovate: A new era in nursing education

        Trending Topics

        • Future Ready Healthcare
        • AI in Healthcare
        • Reducing Clinical Burnout
        • Optimizing Medication Management
        • Healthcare Data Intelligence
        • Supporting Clinical Judgment
      • Insights

        • Building trust and empowering staff: Why usable and reliable tax research matters more than ever
        • 2025 Year-end briefing
        • Integrating CCH Axcess with enterprise software via APIs
        • Automating tax workflows with APIs

        Trending Topics

        • Audit Management
        • Future Ready Accountant
        • Artificial Intelligence (AI) in Tax and Accounting
        • BEPS Pillar Two Compliance
        • One Big Beautiful Bill Act (OBBBA)
      • Insights

        • Tax relief for victims of Missouri severe storms, straight-line winds, tornadoes, and flooding: IRA and HSA deadlines postponed
        • IRS announces 2026 retirement plan cost-of-living adjustments
        • 2026 business and legislative trends for large enterprises
        • Anonymous LLCs: States, requirements, and formation steps

        Trending Topics

        • Equipment lease and finance digital transformation index
        • Business licenses
      • Insights

        • ESG at a crossroads: 8 Ways Global ESG Legal Compliance on VitalLaw® empowers corporations to navigate legal complexity and drive sustainable success
        • Agentic AI: A new force for strategic legal operations
        • Whitepaper: Change management strategies for legal departments at insurance companies
        • Interacting with Kluwer Competition Law Expert AI: A guide to effective prompting

        Trending Topics

        • Economic and interest rate forecasts
        • Future Ready Lawyer
      • Insights

        • BU Verification - CP&ESG Division
        • From forecast to action: Building predictive power into FP&A
        • PHA Challenges and Benefits in the Oil and Gas Industry
        • Omnibus: What is changing in CSRD and EU Taxonomy?
        • The smart path to SAP S/4HANA: Accelerate transformation with an EPM-first approach
        • Beyond the buzz: Practical AI use cases for transforming Finance
        • Finance, take the wheel: operational transfer pricing needs a guide
        • Three foundational internal control frameworks: COSO vs COBIT vs NIST
  • News

    Wolters Kluwer newsroom is a one stop destination for the latest company news, insights, media contacts, and information.

    Visit Our Newsroom

    Newsroom Hub

    • Media Inquiries
    • Annual Report
    • Media Resources
    • Awards
    • Events

    Latest News

    • How are CFOs redefining the future of corporate finance? Insights from Paris’ premier finance conference
    • Wolters Kluwer collaborates with the National Safety Council to enhance workplace safety
    • CCH® SureTax® for SAP Document and Reporting Compliance is an SAP Endorsed App Available on SAP Store
    • Wolters Kluwer poll shows EHS and ESG teams are laying the groundwork for AI-driven transformation
    • Crossing the GenAI divide: Karen Abramson on why agentic AI demands a new product mindset
    • Agentic AI Is Here: Is Your Organization Ready to Absorb It?
    • Wolters Kluwer brings global AI leaders together to shape the future of enterprise innovation
    • Wolters Kluwer featured in CPA Practice Advisor and Accounting Today coverage of new finance AI adoption survey
  • About Wolters Kluwer

    Wolters Kluwer is a global leader in information, software solutions and services for professionals in healthcare; tax and accounting; financial and corporate compliance; legal and regulatory; corporate performance and ESG.

    Learn More about Wolters Kluwer

    Organization

    • Organization
    • Management
    • Strategy
    • Company Values
    • AI Principles
    • People of Progress

    Useful Links

    • Annual Report
    • Newsroom
    • Contact Us
    • Media Inquiries
  • Investors
  • Careers
Search Wolters Kluwer
    No Suggestion

    Visit our global site in English, or select an alternative location or language below

    • Americas
    • Europe
    • Asia & Pacific
    Brazil
    Home page:
    • Portuguese
    Canada
    Home page:
    • English
    • French
    Latin America
    Home page:
    • Spanish
    United States
    Home page:
    • English
    Current Page:
    • English
    Belgium
    Home page:
    • Dutch
    • French
    Czech Republic
    Home page:
    • Czech
    Denmark
    Home page:
    • Denmark
    France
    Home page:
    • French
    Germany
    Home page:
    • German
    Hungary
    Home page:
    • Hungarian
    Italy
    Home page:
    • Italian
    Netherlands
    Home page:
    • Dutch
    Norway
    Home page:
    • Norwegian
    Poland
    Home page:
    • Polish
    Portugal
    Home page:
    • Portuguese
    Romania
    Home page:
    • Romanian
    Slovakia
    Home page:
    • Slovak
    Spain
    Home page:
    • Spanish
    Sweden
    Home page:
    • Swedish
    United Kingdom
    Home page:
    • English
    Australia
    Home page:
    • English
    China
    Home page:
    • Simplified Chinese
    Hong Kong
    Home page:
    • English
    India
    Home page:
    • English
    Japan
    Home page:
    • Japanese
    Malaysia
    Home page:
    • English
    New Zealand
    Home page:
    • English
    Philippines
    Home page:
    • English
    Singapore
    Home page:
    • English
    South Korea
    Home page:
    • English
    Taiwan
    Home page:
    • English
    Thailand
    Home page:
    • English
    Vietnam
    Home page:
    • English
    blog image
    Tax & AccountingUpdatedDecember 01, 2020

    Construction Company Audits: Red Flags in the Actual Audit

    By: Mark Friedlich, ESQ., CPA

    Red flags in the actual audit

    In previous blogs, we identified some red flags that might get the attention of the state sales and use tax auditor both before and during the various stages of a sales and use tax audit of a construction company. In this blog, we focus on some of the red flags that may arise in the actual audit with the construction company. It is at this stage where the rubber meets the road for both the auditor and the taxpayer — at the end of this phase, any adjustments will be proposed formally and that will start the clock on legal process.

    Objective of a sales and use tax audit

    The objective of any tax audit is to determine the correct amount of tax, in the most efficient manner, for the state and the taxpayer. Sometimes, the auditor may have more than one way to audit an issue. In making that decision, the auditor has to consider not only efficiency and accuracy of the method, but materiality as well. Items of negligible amounts are considered immaterial and are not relevant.

    Computer- and noncomputer-assisted audits

    There are basically two audit approaches: computer-assisted audits and noncomputer-assisted audits.

    Computer-assisted audits

    Ideally, the auditor would prefer to use his or her audit software tools to “plug into” the taxpayer’s books and records as seamlessly as possible and select transactions for review. It is in the interest of both auditor and taxpayer to use the most efficient and time-saving methods to get through the audit as quickly as possible. So, the more sophisticated the software used by the taxpayer to gather and process sales and use tax information, the better off everyone is.

    However, in many construction companies, the software used to process sales and use tax transactions may not lend itself to computer-assisted audits. In that case, the audit must be done manually—noncomputer-assisted audits. This is much more labor intensive and time consuming for all involved.

    Non-computer-assisted audits: Potential "red flag” for the auditor

    In general, a detailed examination of the taxpayer’s records is the preferred method of determining the correct tax. However, this may be the least practical method because of the number of records encountered. Tests used, frequently referred to as “sampling” often reduce the number of detailed examinations.

    In some cases, an examination of only a few invoices may be needed to make a determination or provide enough substantiation to support a position to the auditor’s satisfaction. A simple test, depending on the findings, may later require a more complex test that might include the design of a more substantial sample, such as “statistical sampling.”

    There are many types of tests that an auditor could perform, but the auditor determines the test that best fits each case. The auditor may even be face an issue that may require a specially designed test. Some things for the auditor to consider when selecting or designing a test include:

    • the volume of records,
    • the probability that an error exists, and
    • the materiality of any possible error.

    Typical audit areas of focus

    Verification and reconciliation are the basic functions that should drive the audit. Typical areas of focus would include:

    • Nexus
    • Tax Collection and Accruals
    • Tax Charged Sales
      • Tracing to Original Documents
      • Checking Rates
    • Use Tax Accruals
    • Exemptions and exemption certificates
    • Purchases – Use Tax Examination

    In carrying these audit procedures, the auditor examine the standard books and records of the company’s accounting system—journal entries, ledgers, etc. However, construction taxpayers should be prepared to produce other documents on request such as:

    • Billings, both progress and final
    • Job cost folders:
      • Plans and specifications
      • Estimate of costs
    • Copy of contract
    • Copy of purchase invoices for direct charges to job
    • Copy of requisitions for material withdrawn from inventory
    • Time cards for both in-plant labor and labor at jobsite
    • Files of paid purchase invoices

    Construction company issue spotting during the audit

    If you have done your “homework” throughout the various stages of the audit process — pre-audit research and in-person interviews, there should be few surprises during the actual audit. Such “surprises” may occur when the auditor traces selected transactions from “start to finish” and gets unexpected results—a big red flag! The more unexpected the results, the more digging the auditor will do.

    If a complex issue is spotted, the auditor will “encourage” the taxpayer to provide a statement that supports its position on that issue. This need not be a bad thing for the taxpayer because it is generally better to be the first to frame the issue in a light most favorable to itself. And if it has reliable, accurate and easy-to-access sources for the tax research, these sources will assist in producing a timely, well-reasoned response to the issue that will have the effect of discouraging “fishing expeditions.”

    What are some of those issues that construction companies might anticipate?

    Of course, auditors in different states may focus on some issues more than others. However, using California and Texas audit guides as examples, here are some of the typical issues that are often raised during the actual conduct of the audit.

    Installed property v. property that is not installed

    Where any property is delivered to the job and not installed by the contractor, a sale of tangible personal property may have been made, and the transaction is not considered an improvement to realty. If the property installed is “machinery and equipment,” this is a “red flag” if classified as an improvement to realty because “machinery and equipment” is not an accessory to the building and does not serve a function of the building itself.

    Matching of actual operations with key documents:

    • contracts,
    • billing documents (progress and retention) and
    • change orders

    It is important to note that the contract is the primary document for determining tax. However, if a contract is only verbal, billing and change order documents should be considered as determinative as the contract. If accounting operations do not properly match these key documents, that is a “red flag” that sales taxes may not have been correctly computed and paid.

    Is the contractor on a tax-paid or nontax-paid basis?

    The auditor is looking to verify that the contractors are actually responsible only for tax on the purchase cost and that all purchases are properly tax paid or reported. The company’s accounting records for costs of operation must reflect correctly the contractor’s actual responsibility for:

    • costs only
    • costs of installed materials and selling price of over-the-counter sales or
    • the cost of materials and billed price for fixtures

    If they do not match up, this is another “red flag” for the auditor.

    Resale certificates

    Auditors must determine that the applicable sales tax is the liability of the contractor/purchaser as opposed to the liability of the seller. Therefore, the auditor must obtain a copy of the resale certificate for each such purchase made from the seller for which the contractor is the consumer. If the contractor’s records of such certificates are incomplete or sloppy, that is another “red flag,” and the auditor may contact the seller directly to request copies of the certificates.

    Expense and supply items Included in costs

    If the contractor is not properly charging tax-paid supply and expense items to expense accounts, rather than being included in material purchases, that is a “red flag” to the auditor to dig deeper.

    Fixed assets and expense items

    According to the California audit manual, a key item to watch for here is the accounting method for transactions involving withdrawals of materials from inventory for own use. Such misuse is another “red flag.”

    Interstate and foreign commerce transactions after Wayfair

    Auditors will be focused more on nexus than ever before. Why? The Supreme Court, in its decision in Wayfair v South Dakota expanded the reach of states across the country to impose sales and use tax obligations on retail, as well as other businesses up and down the supply chain throughout the country (so-called economic nexus). [Wayfair-related blogs]. These new, often complex requirements demand many more resources and include the obligation to register, to keep records, to track rapidly changing rates and rules, and to collect and remit sales and use taxes.

    If contractors cannot show that they have incorporated Wayfair-related changes into their sales and use tax transaction processing, this is another “red flag” that the sales tax on invoices may not be correct. 

    Particular applications

    Every state must also be reviewed for special requirements that auditors may focus on. To the extent that such special requirements are not being met by the contractor, this is a “red flag” that deserves closer review by the auditor.

    Examples in California

    • Prefabricated cabinets
    • Prefabricated buildings
    • Factor-built housing

    Examples in Texas

    • Real Property Services
    • Landscaping
    • Janitorial Services
    • Care and Maintenance of Lawns
    • Surveying
    • Garbage Removal
    • Structural Pest Control
    • Real Property Service v. maintenance

    Day of reckoning: Auditor’s written proposal of adjustments

    Audit recommendations

    During the course of the audit, the auditor should have discussed all major audit issues with the taxpayer as they arose. The audit recommendations therefore should come as no surprise to the taxpayer and should state whether or not the taxpayer agrees or disagrees with the audit findings. The taxpayer then has to decide which issues it will concede and which ones it will challenge, using all of the appeal procedures applicable in each state. Knowing when to “hold” and when to “fold” is a combination of principled and practical considerations. Although there is no “right answer” for all situations, fair and reasonable conduct throughout the audit on both sides of the table is an important factor in making that decision.

    Post-audit review

    Whatever the decision on a particular audit, the company should conduct a post-audit review as soon as possible to review the audit adjustment just made with the objective of making changes to its sales and use tax processes to prevent future audit adjustments of a similar nature. It is almost impossible to overstate the importance of having access to experienced tax professionals who can guide you through this review process and provide sound compliance advice backed up and supported by best-in-class technology tools. This advice and tools can help to avoid all of the “red flags” identified:

    • before the audit in order to reduce the chances of an audit in the first place,
    • during the audit in order to achieve as favorable an outcome of any future audits as possible, and
    • after the audit in order to put in place the fixes needed to reduce the chances of an audit in the future.

    Pitfalls and Best Practices for Construction Sales and Use Taxes white paper

    What You Need to Know for Sales Tax Compliance and Audit Preparation

    Download White Paper
    Mark Friedlich
    Mark Friedlich, ESQ., CPA
    Vice President of US Affairs for Wolters Kluwer Tax & Accounting
    Mark Friedlich, a CPA & tax lawyer, is the Vice President of US Affairs for Wolters Kluwer Tax & Accounting. He is a member of the U.S. Senate Finance Committee’s Chief Tax Counsel’s Advisory Board, advisor to 14 state taxing authorities, and has been a member of the American Bar Association’s Tax Section and AICPA’s Tax Section leadership teams. Prior to joining Wolters Kluwer he was a COO and Principal at PwC.

     

    Explore related topics

    Expert insightsAuditSales Tax Nexus
    Solutions for Tax & Accounting Professionals

    Tax, accounting, workflow, and firm management solutions to help your firm succeed, with the research tools you need to stay informed.

     

    U.S. Tax & Accounting Hub
    How we help
    Professional Tax Software
    Tax & Accounting Research

    Related insights

    Internal audit performance measures: Aligning metrics with strategy Navigating AI cybersecurity risks: The role of internal controls in a threat-driven landscape What's new with CCH Axcess™ Audit - October 2025

    Related Insights

    • Tax relief for victims of Missouri severe storms, straight-line winds, tornadoes, and flooding: IRA and HSA deadlines postponed
      Article
      Compliance
      Tax & Accounting
      November 19, 2025

      Tax relief for victims of Missouri severe storms, straight-line winds, tornadoes, and flooding: IRA and HSA deadlines postponed

      Due to destruction caused by severe storms that took place in parts of Missouri beginning March 30, 2025, the IRS has announced that affected taxpayers will receive tax relief. As a result, certain IRA and HSA deadlines are extended.
      Learn More
    • IRS announces 2026 retirement plan cost-of-living adjustments
      Article
      Compliance
      Tax & Accounting
      November 18, 2025

      IRS announces 2026 retirement plan cost-of-living adjustments

      On November 13, 2025, the IRS issued Notice 2025-67 announcing retirement plan cost-of-living adjustments for 2026. In addition to the traditional and Roth IRA regular and catch-up contribution limits, several amounts are set to increase.
      Learn More
    • 2025 Year-end briefing
      Article
      Compliance
      Tax & Accounting
      November 11, 2025

      2025 Year-end briefing

      Read the latest tax briefing recapping this year's tax policy changes and gain insight into planning strategies and techniques available through the end of year.
      Learn More
    • Getting started with APIs in accounting firms
      Article
      Tax & Accounting
      Updated November 06, 2025

      Getting started with APIs in accounting firms

      Getting started with APIs in an accounting firm requires careful planning to automate many of the most time-consuming tasks in the firm.
      Learn More
    Footer Navigation
    1. Back to

      Home
    2. Back to

      Expert Insights
    3. Construction Company Audits: Red Flags in the Actual Audit
    • About Wolters Kluwer
    • Strategy
    • Organization
    • Management
    • News & Press Releases
    • Events
    • Solutions Directory
    • Health
    • Tax & Accounting
    • ESG
    • Finance
    • Compliance
    • Legal
    • Expert Insights
    • Careers
    • Investors
    • Sitemap
    • Site Owner

    Wolters Kluwer Tax & Accounting US

    • My Account
    • Shop
    • Support
    • Product Training
    • Product Login
    Follow Wolters Kluwer US
    • Facebook
    • Twitter
    • LinkedIn
    • Instagram
    • YouTube
    Wolters Kluwer Logo

    When you have to be right

    • Terms of Use
    • Privacy & Cookies
    • Your California Privacy Choices
      Your California privacy Choices

    © 2025 Wolters Kluwer N.V. and/or its subsidiaries. All rights reserved.

    Back To Top