A Single Audit (or Uniform Guidance audit) is a comprehensive, organization-wide examination for entities expending $ 750 , 000 $ 7 5 0 , 0 0 0 or more in federal funds annually (increasing to $ 1 $ 1 million for fiscal years after Oct 1, 2024). It combines a financial statement audit with a compliance audit, testing internal controls and adherence to specific federal program regulations to ensure proper, legal use of grant money.
Under the Single Audit Act Amendments of 1996, a Single Audit is an organization-wide audit of a non-Federal entity's financial statements and of its expenditures of Federal awards. A Single Audit allows one audit to cover the audit requirements for multiple Federal awards.
How to Prepare for a Single Audit
Audit findings are typically resolved within six months of an audit report being issued.
All non-federal entities that receive $1 million or more in federal grant funding or other federal assistance must complete an annual single audit to attest that they are using those funds correctly.
About 1 percent of taxpayers reporting business income on a Schedule C were audited. Corporate income tax returns with revenues of up to $1,000,000 increased audit chances up to 0.9 percent. Corporate returns with income up to $5,000,000 had only a 0.11 percent chance of audit.
These vary significantly based on audit type and scope. Type I audits (point-in-time assessments) typically cost $10,000–$60,000, while Type II audits (covering operational effectiveness over 6–12 months) range from $20,000–$120,000 for most organizations. Complex enterprise engagements can exceed $100,000+.
Recognizing red flags such as unexplained losses, irregular transactions, and suspicious accounting practices is crucial for detecting financial fraud before it escalates. Forensic audits provide the in-depth, objective investigation needed to uncover hidden irregularities and safeguard your business.
A questioned cost means an amount, expended or received from a federal award, that in the auditor's judgment is noncompliant or suspected noncompliant with federal statutes, regulations or the federal award's terms and conditions.
IRS audits are triggered by discrepancies the IRS's automated systems catch, like unreported income from 1099s, claiming excessive deductions (charity, business meals, home office) compared to your income bracket, large business losses, math errors, significant income jumps, or claiming hobby losses as business expenses, with higher-income earners generally facing more scrutiny.
What Not to Say During an Audit?
The 5 Cs of audit (Criteria, Condition, Cause, Consequence, Corrective Action) are a framework for structuring clear, actionable audit findings, explaining what should be (Criteria), what is found (Condition), why it happened (Cause), what the impact is (Consequence/Effect), and how to fix it (Corrective Action/Recommendation) to drive organizational improvement and compliance.
The specific documents required for an audit depends on the type of audit being conducted and the industry, but some standard documents include:
What is the 5% Rule for Materiality? Under US GAAP, the 5% rule suggests that if a misstatement is less than 5% of a financial statement item, it is generally considered not material. However this is not an absolute rule and must be applied with professional judgment.
As stated above, federal single audits cannot be finalized or released until the 2025 FCS is issued as final. For governments and nonprofits depending on timely reporting to maintain eligibility for federal awards, a late single audit filing can cause a potential delay in funding approval and cash flow.
What triggers the requirement for a Single Audit? Any non-federal entity that expends $1 million or more in federal funds during its fiscal year is required to obtain a Single Audit (or Program-specific Audit, if applicable.)
Entities that spend federal grant funds are required to submit an audit if they meet the following spending thresholds: $750,000 or more for Fiscal Years starting before October 1, 2024. $1,000,000 or more for Fiscal Years starting on or after October 1, 2024.
There are five potential threats to auditor independence: self-interest, self-review, advocacy, familiarity, and intimidation. Any lack of independence compromises the integrity of financial markets.
Non-CPAs can perform internal audits used by the organization but are not authorized beyond that. Only a CPA (or CPA firm) can perform external audits, audits of publicly traded companies, and Service Organization Control (SOC) audits which assess a service organization's internal controls.
A Single Audit, also known as a Uniform Guidance Audit, is a financial reporting and compliance audit focused on entities that expend $1 million or more in federal awards in a fiscal year beginning after October 1, 2024. This is an increase from the $750,000 Single Audit threshold.
Many people worry about IRS audits. But the chances of being audited are actually very low for most individuals. Recent IRS data shows the IRS examined 0.40% of individual returns filed and 0.66% of corporation returns filed. Most of the IRS's focus is on large businesses and high-income earners.