Initiating a Case Before the U.S. District Court

U.S. District Courts are general Article III courts that hear post-payment tax refund suits. They are often well-suited to fact-intensive international disputes, such as tariff-related refund claims.

Next, let’s understand when a taxpayer can file a petition before the U.S. District Court.

When to File a Petition Before a U.S. District Court?

A petition may be filed only after full payment of the tax and administrative exhaustion with the IRS. This generally happens after filing a proper refund claim with the IRS and getting a notice of disallowance.

Next, let’s understand the deadlines for filing a petition before a U.S. District Court, depending on the type of claims.

Filing Deadlines and Triggers

A taxpayer is required to file suit within 2 years of the IRS’s formal denial of the refund claim. If the IRS does not respond, the taxpayer should wait 6 months after filing the claim before filing suit.

The following are the documents that a taxpayer may include in their refund claim petition:

• Clearly state the factual and legal grounds.
• Include sufficient supporting facts, and
• Be signed under penalties of perjury.

International refund claims often involve extended limitation periods, such as the 10-year statute applicable to certain foreign tax credits under IRC § 904.

Next, let’s understand the procedure for filing a case before the U.S. District Court.

U.S. District Court Filing Procedures

A taxpayer may file the complaint in the federal district court where the taxpayer resides or has its principal place of business.

If no such district exists, the suit may be filed in the U.S. District Court for the District of Columbia.

Electronic filing through the CM/ECF system is mandatory in most districts.

The following are the documents that are generally included in the complaint:

• Jurisdictional statement (28 U.S.C. § 1346(a)(1))
• Venue statement
• Identification of parties
• Statement of facts and legal claims
• Relief requested (refund plus statutory interest)
• Civil cover sheet
• Copy of the administrative refund claim
• Proof of payment and denial

Next, let’s understand the service requirements to notify the defendant, the United States, of the complaint filed in the U.S. District Court. Service requirements are necessary to formally notify the United States that a lawsuit has been filed and to give the government an opportunity to respond within the required time.

Service Requirements

After filing the complaint, the taxpayer is required to serve the United States within 90 days pursuant to Federal Rule of Civil Procedure 4(m). Proper service in the United States requires delivering or sending (by registered or certified mail) a copy of the summons and complaint to the following:

• The United States Attorney (or an authorized assistant U.S. Attorney or clerical employee) for the district where the action is brought; and
• The Attorney General of the United States in Washington, D.C.

Next, let’s understand the filing fee requirements for filing a complaint before the U.S. District Court.

Filing fee

The filing fee for a civil complaint in U.S. District Court is $405, as of 2026. A taxpayer who cannot afford the filing fee may request permission to proceed in forma pauperis (IFP). If the court grants the request, the filing fee may be waived.

Next, let’s understand what happens after filing a complaint before the U.S. District Court.

After Filing

After a civil tax refund complaint is filed in a U.S. District Court, the United States generally has 60 days to respond after receiving the summons and complaint.

This response period begins when the U.S. Attorney is properly served under Rule 12 of the Federal Rules of Civil Procedure.

Next, let’s understand how a case is initiated before the U.S. Court of Federal Claims.