41 CFR § 301-11.604 - When to file the required tax information for extended TDY.

---
identifier: "/us/cfr/t41/s301-11.604"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "41 CFR § 301-11.604 - When to file the required tax information for extended TDY."
title_number: 41
title_name: "Public Contracts and Property Management"
section_number: "301-11.604"
section_name: "When to file the required tax information for extended TDY."
chapter_number: 301
chapter_name: "TEMPORARY DUTY (TDY) TRAVEL ALLOWANCES"
subchapter_number: "B"
subchapter_name: "ALLOWABLE TRAVEL EXPENSES"
part_number: "301-11"
part_name: "11—SUBSISTENCE EXPENSES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "5 U.S.C. 5702; 5 U.S.C. 5703; 5 U.S.C. 5707; 5 U.S.C. 5707a."
regulatory_source: "FTR Case 2025-05, 90 FR 56893, Dec. 8, 2025, unless otherwise noted."
cfr_part: "301-11"
---


# 301-11.604 When to file the required tax information for extended TDY.

Employees should provide the information their agency requires to make the ETTRA calculation. This will include tax information for any Federal and State tax returns filed for the year that the employee was on a taxable extended TDY assignment. Employees should submit this information at the beginning of the extended TDY assignment, or as soon as the employee or agency realizes the assignment will incur taxes.