Military tax filing: free tools, combat pay, and the quirks

Military tax returns come with a set of rules civilians never touch: tax-free combat pay, filing deadline extensions for deployment, special residency treatment, and free expert help built for exactly these situations. Handled well, they save real money and headaches. Handled on autopilot with generic software, they leave benefits unclaimed and occasionally trigger errors. Knowing the landscape - and where the free help lives - is worth far more than the zero dollars it costs.

Use the free filing built for you

Before paying for tax software, use what you've already funded. Military OneSource offers MilTax, free tax software and consultation designed for military situations including deployment, multiple-state issues, and combat pay. On-base VITA (Volunteer Income Tax Assistance) centers file returns for free with volunteers trained on military returns. Both beat generic paid software for military-specific complexity, and both cost nothing - so paying to file is usually a mistake.

The Combat Zone Tax Exclusion

This is the big one. While serving in a designated combat zone, enlisted members' and warrant officers' pay is entirely excluded from federal income tax; officers are excluded up to a monthly cap. Any part of a month spent in the zone qualifies the whole month, and bonuses (like reenlistment) signed in-zone can be tax-free too. But the exclusion interacts with other parts of your return in ways worth understanding, not ignoring.

Deadlines and extensions

• Serving in a combat zone automatically extends your filing and payment deadlines - generally 180 days after you leave the zone, plus extra days for time in-zone during filing season.
• The extension applies to filing, paying, and IRA contributions - no penalties or interest during the covered period.
• Stateside members can still request the standard extension if they need it.
• Keep documentation of your in-zone dates; the extension is date-driven.

Residency, moving, and other military quirks

State taxes are their own puzzle: under the SCRA your military pay is taxed by your state of legal residence, not your duty station, and a spouse can often elect the same residence under MSRRA. If your legal residence is a no-income-tax state, that's worth thousands. Reservists traveling over 100 miles for drill can sometimes deduct unreimbursed travel. And while most moving-expense deductions were suspended for civilians, active-duty members moving on PCS orders retain the deduction for unreimbursed moving costs - a genuine military carve-out worth claiming.

The bottom line

Military taxes reward a little attention: file free through MilTax or a base VITA center, understand that combat pay is excluded (and elect it into the EITC calculation when that helps), use the automatic deployment extensions, get your state residency set correctly under SCRA and MSRRA, and claim the active-duty PCS moving deduction. This is genuinely tax-adjacent territory, so lean on the free consultants for anything complex - a 30-minute MilTax appointment is the best-paid free help on the calendar. For personalized advice, a CPA or tax professional is worth it.