1. Identifying the IRS Notice and Its Deadline
The legal effect of an IRS letter depends on what the agency requests or proposes. A document request, a proposed adjustment, and a statutory Notice of Deficiency require different responses. The notice number, tax period, and mailing date help identify the applicable procedure.
Information Requests and Proposed Adjustments
During an examination, the IRS may issue Form 4564 to request records supporting a return. The request ordinarily identifies the documents sought and a response date.
A CP2000 notice generally proposes changes when third-party information does not match the filed return. It is not itself a statutory Notice of Deficiency.
Taxpayers should compare the proposed figures with their returns and supporting documents before responding under the notice instructions.
Statutory Notices of Deficiency
Under IRC §§ 6212–6213, a statutory Notice of Deficiency generally provides 90 days to petition the U.S. Tax Court. A 150-day period applies when the notice is addressed to a person outside the United States.
The notice states the last day for filing a petition. Additional correspondence with the IRS does not extend the statutory deadline.
Other procedures govern certain international reporting penalties and collection disputes.
2. Preparing Evidence for an International Tax Examination
An examiner may compare reported foreign income with bank statements, ownership records, and business transactions. The response should explain how the evidence supports the tax treatment under examination. Records that do not address the disputed issue may leave the examiner's questions unanswered.
Foreign Accounts and Income Records
Relevant evidence may include foreign bank statements, employment records, investment statements, and foreign tax assessments. These documents help establish when income arose and how it was reported.
An account deposit does not necessarily represent taxable income. Transfers between accounts owned by the same taxpayer and loan proceeds require separate analysis.
Currency conversion can also explain differences between foreign statements and U.S. .eturns. Taxpayers should retain the calculations supporting reported dollar amounts.
Transactions with Foreign Affiliates
Businesses may receive requests for intercompany agreements, invoices, payment records, and financial statements. These documents help establish what the parties exchanged and how they priced the transactions.
IRC § 482 permits the IRS to allocate income or deductions among controlled taxpayers under specified conditions. An examiner may question whether related-party pricing satisfies applicable arm's-length standards.
A signed agreement does not establish that the parties performed the transaction as written. Service records and accounting entries may provide additional evidence.
Missing Documents and Examination Records
Taxpayers should distinguish existing records from documents they cannot locate. Unsupported estimates should not be presented as established facts.
An unclear request can be discussed with the examiner, including its scope and the time needed to respond. Any agreed extension should be confirmed.
Original notices, submitted documents, and correspondence should be retained. Those records can establish what the IRS received if an IRS audit later becomes a formal dispute.
3. Evaluating Proposed Tax Adjustments and Penalties
An IRS adjustment may arise from a disputed calculation, factual assumption, or interpretation of federal tax law. The taxpayer should identify the specific basis for the proposed change. Additional tax and penalties require separate analysis because their legal standards differ.
Disputed Income and Foreign Tax Credits
The IRS may question foreign income, related-party payments, or eligibility for a foreign tax credit. Each issue requires evidence addressing its particular statutory requirements.
A foreign tax payment does not automatically qualify for a U.S. .redit. The nature of the tax, income category, and credit limitations affect the calculation.
For related-party transactions, the pricing method should be evaluated against the actual transaction records and applicable transfer-pricing rules.
Penalty Standards and Available Defenses
Different Internal Revenue Code provisions govern different tax penalties. Their elements, defenses, and review procedures are not interchangeable.
Some penalties permit reasonable-cause relief, while others apply different standards. Filing records and contemporaneous correspondence may help establish the circumstances surrounding a disputed position.
A tax dispute therefore requires analysis of the statutory basis for each asserted liability.
4. Challenging an IRS Determination
A taxpayer who disagrees with examination findings may qualify for administrative review or judicial proceedings. The available procedure depends on the notice, liability involved, and stage of the examination. An administrative protest does not automatically extend a separate court deadline.
IRS Appeals and Written Protests
An examination may conclude with a letter offering review by the IRS Independent Office of Appeals. A commonly used 30-day letter explains the applicable protest procedure.
A written protest generally identifies disputed adjustments, supporting facts, and legal arguments. Submission requirements vary with the amount and type of dispute.
Appeals considers the merits of the dispute and litigation risks. Its review does not guarantee a settlement.
Tax Court Petitions and Refund Litigation
A timely petition following a qualifying Notice of Deficiency generally permits Tax Court review before payment. The petition must satisfy the court's filing requirements.
Refund litigation follows a different route. It generally requires compliance with applicable payment, administrative claim, and jurisdictional requirements.
Certain international information-return penalties fall outside ordinary deficiency procedures. The available tax controversy and litigation route depends on the disputed liability.
5. Federal and New York State Tax Disputes
The IRS administers federal taxes, while the New York State Department of Taxation and Finance administers applicable state taxes. A federal adjustment may affect a state return, but the agencies conduct separate proceedings. The issuing authority determines which protest rules apply.
State Reporting after Federal Adjustments
A federal income adjustment may change the amount reported for state tax purposes. Whether a separate report or amended return is required depends on the taxpayer, tax involved, and applicable New York Tax Law provisions.
A pending federal dispute does not automatically resolve related state reporting obligations. Taxpayers should examine the consequences of the federal change under the applicable state rules.
Conciliation Conferences and State Tax Petitions
An eligible state tax notice may be challenged through the Bureau of Conciliation and Mediation Services or the New York State Division of Tax Appeals. The notice identifies the available protest rights.
Under Tax Law § 170(3-a), a timely conciliation request suspends the applicable petition period. Following an adverse conciliation order, the taxpayer generally has 90 days to petition.
Specified matters under § 170(3-a)(h) carry a 30-day period instead. Other notices may have different filing requirements.
State conference and petition procedures remain separate from IRS Appeals and federal litigation.
20 Oct, 2026
