How Much Does an Accountant Charge for an Audit? – Key Facts

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Aug 25, 2025
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Once a business is facing a sales tax audit, collaborating with a professional accountant is a smart action that could make all the difference. But how much should be expected to pay for that kind of expertise?

The cost of hiring an accountant for tax audit support changes in accordance with various factors as presented below:

  • The complexity of the business structure
  • How many states the business operates in
  • The volume of records as well as documents involved
  • The stage at which the accountant gets involved (pre-audit vs. post-notification)

For small to mid-sized businesses, the usual cost falls between $2,500 and $10,000. Such a figure covers both preparation and representation throughout the entire sales tax audit process. 

It is true that accountants generally bill hourly. The following figures can be expected:

  • Hourly rate: $150 to $400
  • Flat project fees (common for simpler cases): Negotiated based on scope

So, what does that fee cover?

  • Reviewing financial records alongside organizing necessary documentation
  • Communicating directly with the tax auditor
  • Clarifying transactions and returns as well as exemption issues
  • Presenting strategic advice for improving the tax practices
  • Aiding you respond to any assessments or appeal findings

Early Support Pays Off

Businesses may naturally wonder, “What triggers a sales tax audit?”— the answer generally leads to late filings or discrepancies in tax returns as well as operating across states without proper registration, which are usual red flags. And when such issues arise, being represented by an experienced accountant can lower both your exposure and stress. The right professional is more than a precaution—it is a smart investment. Working with an accountant early can also present aid in building a reliable sales tax audit checklist and reducing future risks.

If you are preparing for a sales tax audit or responding to an existing one, reach out to Dimov Audit for experienced, hands-on support.