A tax refund after deployment is usually larger than a normal year’s refund because federal law excludes most or all of your combat pay from taxable income, while the military kept withholding federal tax at your pre-deployment rate for at least part of the year. The gap between what came out of your paycheck and what you actually owe is the refund. Beyond the exclusion itself, an Earned Income Tax Credit election and some retirement-account moves can push the number higher.
Why Deployment Produces a Bigger Refund
The engine behind the refund is the combat zone tax exclusion in 26 U.S.C. § 112. If you served in a designated combat zone during any part of a month, your military pay for that entire month can be excluded from gross income.1Office of the Law Revision Counsel. 26 U.S. Code 112 – Certain Combat Zone Compensation of Members of the Armed Forces Even one day in the zone during a calendar month makes the whole month’s pay eligible.
How much you can exclude depends on rank:
- Enlisted members and warrant officers have their entire military compensation excluded for each qualifying month, with no dollar cap.1Office of the Law Revision Counsel. 26 U.S. Code 112 – Certain Combat Zone Compensation of Members of the Armed Forces
- Commissioned officers are capped at the top E-9 basic pay plus any hostile fire or imminent danger pay for the month. For 2026, that cap is approximately $11,392 per month, and pay above the cap remains taxable.1Office of the Law Revision Counsel. 26 U.S. Code 112 – Certain Combat Zone Compensation of Members of the Armed Forces
Early in the year, before you deploy, your withholding is set to a projected annual income that assumes you earn taxable pay all twelve months. Once combat pay drops out, your real taxable income falls, often sharply. The withholding already sent to the Treasury exceeds your actual liability, and the IRS refunds the difference.
Only pay that would otherwise be taxable factors into this: basic pay, special pay, bonuses, and reenlistment bonuses received while in the zone. Basic Allowance for Housing and Basic Allowance for Subsistence are nontaxable regardless of deployment status,2Internal Revenue Service. Publication 3, Armed Forces Tax Guide so those numbers never appear as taxable wages on your W-2 and do not change because of the exclusion.
Where the Exclusion Applies
The exclusion attaches to service in a location the president has designated as a combat zone by executive order, or an area the Department of Defense has certified for combat zone tax benefits.3Internal Revenue Service. Combat Zones The current designations include:
- The Arabian Peninsula area (designated since January 1991): Iraq, Kuwait, Saudi Arabia, Oman, Bahrain, Qatar, the United Arab Emirates, the Persian Gulf, the Red Sea, the Gulf of Oman, the Gulf of Aden, and parts of the Arabian Sea. Jordan, Lebanon, and eastern Turkey were later certified as direct-support areas.
- The Afghanistan area (designated since September 2001), plus certified support countries including Jordan, Kyrgyzstan, Pakistan, Tajikistan, Uzbekistan, Djibouti, Yemen, Somalia, and Syria.
- The Kosovo area (designated since March 1999): Serbia, Montenegro, Kosovo, Albania, the Adriatic Sea, and parts of the Ionian Sea.
- The Sinai Peninsula, classified as a qualified hazardous duty area under the Tax Cuts and Jobs Act. You must receive hostile fire or imminent danger pay certified by the DoD to qualify.
Service outside a combat zone can still qualify if the DoD designates it as direct support of operations in the zone and you receive hostile fire or imminent danger pay, currently $225 per month.4Defense Finance and Accounting Service. Hostile Fire/Imminent Danger Pay
The Earned Income Tax Credit Election
The EITC can be worth several thousand dollars for low-to-moderate-income filers, and combat pay creates a decision point. Because the exclusion removes combat pay from taxable income, it can also remove it from the earned-income figure used to calculate the EITC. That may shrink your credit or wipe it out if combat pay was most of your earnings.
The Working Families Tax Relief Act gave service members the option to include nontaxable combat pay in earned income solely for EITC purposes.5Internal Revenue Service. Nontaxable Combat Pay Election and the Earned Income Tax Credit The combat pay stays tax-free either way; you are only choosing whether the IRS counts it when calculating the credit. The nontaxable amount appears on your W-2 in Box 12 with Code Q, and that is the number you plug in if you make the election.
Whether the election helps depends on where you sit on the EITC curve. The credit rises with income up to a threshold and then phases out. If your non-combat income is low, adding the combat pay can push you into a higher credit range. If you are already near the phaseout, adding it can reduce or eliminate the credit. Run the return both ways and pick the version with the larger refund.
Retirement Accounts Funded With Tax-Free Combat Pay
A deployment is one of the rare chances to move tax-free money into a retirement account, and the opportunity is easy to miss.
The Thrift Savings Plan has two limits that matter. The standard elective deferral limit for 2026 is $24,500, which covers combined traditional and Roth TSP contributions in a normal year. Traditional contributions made from tax-exempt combat zone pay do not count against that $24,500 cap. They count only against the much higher annual additions limit of $72,000.6Thrift Savings Plan. Contribution Limits A deployed service member can put far more into the TSP in a single year than would otherwise be allowed. Contributing tax-exempt pay to a Roth TSP means neither the contributions nor the eventual earnings are ever taxed.
Combat pay also counts as earned income for IRA contributions. Without that rule, a service member whose entire income was excluded might have no qualifying earned income to contribute at all. The 2026 IRA contribution limit is $7,500, or $8,600 if you are 50 or older.7Internal Revenue Service. Retirement Topics – IRA Contribution Limits A Roth IRA funded with tax-free combat pay grows and distributes tax-free in retirement.
Filing Deadlines Are Automatically Extended
You do not need to file while deployed. Federal law automatically extends every tax deadline for the entire time you serve in a combat zone plus 180 days after you leave, or after you are discharged from qualifying hospitalization.8Office of the Law Revision Counsel. 26 USC 7508 – Time for Performing Certain Acts Postponed by Reason of Service in Combat Zone On top of that, you get back the days that remained before your original deadline when you entered the zone.
Say you deployed on February 1, when the April 15 filing deadline was 74 days away, and you left the zone on October 1 after eight months. Your deadline becomes 180 days after October 1, plus those 74 days, which lands you at roughly late June of the following year. The extension covers filing, paying, claiming a refund, and responding to IRS notices, with no interest or penalties during the window.9Internal Revenue Service. Extension of Deadlines — Combat Zone Service
If a refund is waiting for you, though, waiting does not help. File as soon as you can and get the money in your account.
Documents to Pull Before You File
Start with your W-2. Box 12, Code Q shows the amount of nontaxable combat pay you received.10Internal Revenue Service. Lesson 16 – Military Income Cross-check that against your Leave and Earnings Statements from DFAS, which break down every component of pay month by month. If the W-2 and LES records disagree, ask your military pay office for a corrected W-2C before filing. Discrepancies are common enough to delay refunds.
Also document the exact dates you entered and left the combat zone. Military orders and travel vouchers are the standard proof, and those dates drive both your exclusion and your deadline extension.
Need a replacement W-2? DFAS offers several routes: download it through myPay, submit a request through AskDFAS, or call the military pay customer care center at 1-888-332-7411.11Defense Finance and Accounting Service. 1099-R and W-2 Tax Statement Requests On-base military finance offices can also reissue the form in person.
How the IRS Knows You Were Deployed
Military members generally do not need to flag combat zone service on the return itself. The Department of Defense sends the IRS deployment data directly.12Internal Revenue Service. Questions and Answers on Combat Zone Tax Provisions E-filing software typically includes a prompt about combat zone service that applies the correct processing flags automatically. Civilians working alongside the military in a combat zone are the ones who need to write “COMBAT ZONE” and their deployment date in red at the top of a paper return.
To confirm the IRS has your status right, you or your spouse can email combatzone@irs.gov with your name, stateside address, date of birth, deployment date, and supporting documentation. Do not include your Social Security number in that email.13Internal Revenue Service. Notifying the IRS by Email About Combat Zone Service
When a Spouse Files for You
If your spouse needs to file a joint return while you are still downrange, a formal power of attorney is not always necessary. IRS Publication 3 lets a spouse sign for a service member in a combat zone by attaching a signed statement to the return explaining the situation.2Internal Revenue Service. Publication 3, Armed Forces Tax Guide A military power of attorney that specifically mentions tax filing also works. IRS Form 2848 authorizes someone to represent you in dealings with the IRS, such as responding to audits, but it is not required just to sign and submit a joint return.
Free Tax Preparation That Actually Knows Military Rules
MilTax, offered through Military OneSource, provides free tax software and access to consultants trained on military-specific issues. Active-duty members, eligible family members, and veterans within 365 days of separation can file a federal return and up to five state returns at no cost.14Military OneSource. MilTax: Free Software and Support The consultants understand the combat pay exclusion, the EITC election, and spouse residency questions, which is often not the case with generic free-file tools.
The IRS Volunteer Income Tax Assistance program also runs free in-person tax prep at many installations, staffed by trained volunteers. If you prefer sitting down with someone, that is a solid option.
Tracking Your Refund
Once the return is filed, the IRS “Where’s My Refund?” tool tracks it. Electronic returns are generally processed within 21 days.15Internal Revenue Service. Processing Status for Tax Forms Paper returns take six weeks or more.16Internal Revenue Service. Refunds Confirm your direct deposit information matches your current bank, especially if you changed accounts during deployment. E-filing pushes the combat zone flags into the system immediately and gets the money to you weeks sooner.
One boundary worth naming: a working spouse’s state income tax situation is a separate issue from your federal refund. The Military Spouses Residency Relief Act can shield a spouse’s wages from the duty-station state’s income tax and lets spouses elect one of three states as their tax domicile.17Office of the Law Revision Counsel. 50 USC 4001 – Residence for Tax Purposes If that applies to your household, factor it into the state returns you file alongside the federal one.