What is audit and assurance in simple terms?

Audit and assurance involve examining a company's financial records to ensure accuracy and compliance with accounting standards.

What is the main purpose of an audit?

The main purpose of an audit is to provide an independent opinion on whether financial statements are presented fairly.

HMRC Tax Investigations

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Expert IRS Audit Representation & Defense

Receiving a notice from the IRS can be overwhelming. BestFiler acts as your professional shield, handling all communications and technical defense so you never have to face an IRS agent alone. From simple correspondence checks to complex field audits, we ensure your business stays protected.

Strategic IRS Audit Representation with BestFiler

Comprehensive Audit Defense & Resolution

Whether it is a "Correspondence Audit" conducted by mail or a more detailed "Field Audit," BestFiler manages the entire lifecycle of the inquiry. We specialize in responding to Information Document Requests (IDRs), reconciling reported income against third-party data (like 1099-Ks), and defending the legitimacy of your business deductions. Our goal is to provide the "burden of proof" required by the IRS while minimizing the risk of additional assessments or penalties.

Navigating Modern Audit Triggers

The 2026 enforcement landscape focuses heavily on high-wealth individuals, digital asset transactions, and complex pass-through entities (LLCs and Partnerships). BestFiler stays ahead of these priorities, particularly the increased scrutiny on Employee Retention Credit (ERC) claims and offshore account disclosures (FBAR). We conduct an internal risk assessment before responding to the IRS, allowing us to identify and address potential vulnerabilities in your tax profile proactively.

Multi-State & Local Representation

What’s Included

An audit isn’t just about the numbers; it’s about the documentation. We provide a full-spectrum defense:

Power of Attorney: We legally step into your shoes, meaning the IRS speaks to us, not you. You won’t have to take time off work or deal with high-stress interviews.
Audit Strategy & Scoping: We analyze the IRS notice to determine exactly what they are looking for and prepare a strategic response to prevent the audit from expanding into other years.
Document Organization: We translate your bank statements, receipts, and logs into the "Audit Techniques Guides" format that IRS agents expect, speeding up the process and reducing errors.
Penalty Abatement: If errors are found, we fight to have penalties waived or reduced based on "Reasonable Cause," potentially saving you thousands in fines.
Appeals Support: If we disagree with the auditor’s findings, we manage the formal appeals process to contest the decision before it becomes final.

Who We Help

How It Works

We’ve refined our process to be as efficient as possible

Notice Review

The second you get an IRS letter, send it to us. We interpret the codes (e.g., CP2000 or Letter 566) to explain exactly what is at stake.

Information Gathering

We help you compile the specific records requested—such as mileage logs, 1099s, or home office measurements—and review them for any "red flags."

The Representation

We meet virtually to discuss tax-saving strategies and ensure your estimated payments are on track.

Resolution

We negotiate the final settlement, set up payment plans if necessary, and ensure your account is closed with the IRS as quickly as possible.

HMRC Tax Investigations Services FAQs

Why was I selected for a USA tax audit?

Selection isn't always a sign of wrongdoing. The IRS uses a computer program called DIF (Discriminant Inventory Function) that flags returns deviating from the "norm" for your industry. Other triggers include high cash transactions, large home office deductions, or data mismatches between your return and a 1099 form.

Does the IRS ever initiate audits by phone or email?

No. The IRS will always initiate an audit via official mail. If you receive a phone call or email claiming to be an IRS agent demanding immediate payment, it is a scam. Authentic IRS communications will always provide a letter number and a clear process for response.

What are the three main types of IRS audits?

Correspondence Audit: A simple request via mail for more information on a specific line item.
Office Audit: An in-person interview at a local IRS office.
Field Audit: The most comprehensive audit, where a revenue agent visits your home or place of business to examine your entire financial operation.

How long does the IRS have to audit my USA return?

Generally, the IRS can include returns filed within the last three years. However, if a "substantial understatement" of income is identified (usually 25% or more), they can go back six years. If fraud is suspected, there is no time limit. BestFiler helps ensure your records are audit-ready for the full statutory period.