You hired a military spouse. Payroll runs next week. Now you have a question. Which state's income tax do you withhold?

The answer is not always the state where they work. A federal law can change it. It is called the Military Spouses Residency Relief Act, or MSRRA.

Get it right and your new hire keeps more of each paycheck. Get it wrong and you may over-withhold for the wrong state. That creates cleanup work for both of you.

This guide breaks it down in plain payroll terms. You will learn which state to withhold for, what form to collect, and the steps to set it up. None of this is tax advice for your specific books. Always confirm with the state and a tax pro. But you will know the right questions to ask.

What Is MSRRA, and Why Does It Change Payroll?

MSRRA became law in 2009. Congress amended it in 2018 with the Veterans Benefits and Transition Act. The rules live inside the Servicemembers Civil Relief Act at 50 U.S.C. § 4001.

Here is the core idea. A servicemember does not lose their home state just because the military sends them somewhere. The law protects their legal residence. That home state is also called their domicile. Their spouse gets a similar protection.

The 2018 change matters most for payroll. It lets a military spouse elect the servicemember's state of legal residence for tax purposes. The spouse can make that choice even if they never lived in that state. Before 2018, the spouse usually had to already share that home state.

So a spouse working in your state may legally be a resident of another one. Their wages may be taxed only by that home state. Not by the state where the work happens. That is the part that changes how you withhold.

A later law went further. The Veterans Auto and Education Improvement Act of 2022 added more choices. It applies to tax years starting in 2023. Under the law, a servicemember and spouse may pick the servicemember's state of residence, the spouse's own state of residence, or the servicemember's permanent duty station for tax purposes. Most of the time you will see the spouse claim the servicemember's home state. You do not pick this for them. You apply the choice they document on the state form.

Which State Do You Withhold For?

Start with the default. Most of the time, you withhold for the state where the work is performed. That is the normal rule for any employee.

MSRRA can flip that for a qualifying military spouse. When the law applies, the spouse's wages are generally taxable only by their state of legal residence. So you would withhold for the home state, not the work state.

Two things can happen next:

• The home state has an income tax: you generally register there and withhold for that state.
• The home state has no income tax: many states like Texas and Florida have none. In that case you may withhold no state income tax at all.

Always confirm the exact rule with that state's Department of Revenue. States handle this differently, so do not assume your state works like the last one.

Multi-state situations happen as well. A spouse might live near a state line and work across it. The home state of legal residence still anchors the answer under MSRRA. When the facts get messy, write down what you relied on and confirm it with the state.

What Are the Conditions for MSRRA to Apply?

MSRRA does not cover every married employee. A few things generally need to be true. Confirm the exact test with the state, because the details vary.

• The employee is married to an active-duty servicemember.
• The servicemember is in the state on military orders.
• The spouse is in the state to be with that servicemember.
• The spouse claims a legal residence in another state, or elects the servicemember's residence under the 2018 rule.

If those hold, the spouse can usually claim the exemption from your state's withholding. If any piece is missing, the normal work-state rule often applies instead. You do not have to figure out the family's whole tax picture. You just need to know which state their wages belong to for withholding.

Timing matters too. A spouse may qualify partway through the year, or start a job after the exemption is already in place. Ask about status at hire, and again if their situation changes. If the exemption starts mid-year, you generally switch withholding going forward, not backward. The employee sorts out any earlier months when they file their state return.

What Does the Employee Need to Give You?

You do not just take someone's word for it. You need documentation on file before you change anything.

Most states use a specific withholding exemption or non-residency certificate for this. The name and form number differ by state. Do not assume one national form covers it.

Here is how a couple of states handle it:

• California: asks for the Employee's Withholding Allowance Certificate, Form DE 4, with the exemption claimed. See the state's Employment Development Department page.
• Other states: publish their own military spouse exemption form or add a box to their standard withholding certificate.

The safest move is simple. Go to the work state's Department of Revenue site. Search for their military spouse withholding rule. Use the form they name. The IRS guidance on MSRRA also explains the basics if you want the federal backdrop.

What Are Your Payroll Steps?

Once you know the rule, the setup is short. Here is the order that keeps it clean.

What If the Spouse Works Remotely or Lives Overseas?

Remote work adds a wrinkle, but the logic holds. A spouse may work from your duty-station state for a company based somewhere else. MSRRA can still apply to their wages. Their state of legal residence still drives the tax question, not your office location.

This comes up more as teams spread out. If you hire across the map, our guide on recruiting military spouses for distributed teams covers the sourcing side.

Overseas is its own case. Some military families live abroad on orders. Withholding and residency for spouses living OCONUS can get complex fast. This is a spot to lean on a tax professional and the servicemember's legal assistance office. If you plan to hire there, start with our guide on recruiting military spouses living overseas.

What Happens If the Spouse Does Not Qualify or Does Not Elect?

Not every spouse will claim MSRRA. Some may not qualify. Some may simply choose not to elect a different home state.

That is fine. The default just kicks back in. You withhold for the state where the work is performed, like any other employee. No exemption form, no special handling.

You are not the judge of whether they qualify. Your job is to collect the form, apply the choice, and keep records. If you are unsure, point the employee to the state Department of Revenue or a tax pro.

One more point that trips people up. Hiring a military spouse does not by itself earn you a tax credit. That is separate from veteran-hire credits like the Work Opportunity Tax Credit, which expired at the end of 2025 and is not available for 2026 hires unless Congress renews it. For related employer tax topics, see our guide on state tax incentives for hiring veterans.

What Should You Do at the Next PCS?

Military families move often. A permanent change of station, or PCS, can reset the picture. New duty station, maybe a new state, sometimes a new residency choice.

Build a simple habit. When a spouse tells you the servicemember got new orders, revisit their withholding. Ask if their claimed home state changed. Update the form if it did.

This small step keeps payroll clean and shows the employee you understand military life. That kind of trust helps you keep good people through PCS moves instead of losing them at every station change.

What Are Common MSRRA Payroll Mistakes?

A few errors show up again and again. Knowing them upfront saves you a cleanup later.

The first is treating the work state as the automatic answer. For most workers it is. But for a qualifying military spouse, the home state usually wins. If you skip the question, you may withhold for the wrong state for months.

The second is changing withholding with no form on file. A verbal request is not enough. You need the signed state exemption certificate before you stop withholding. Without it, you have nothing to show the state later.

The third is forgetting the home state may still want tax. MSRRA does not erase the spouse's tax bill. It just moves it to the home state. If that state has an income tax and you can register there, you generally should. If you cannot withhold for it, the employee may need to make their own quarterly payments to that state.

The fourth is over-withholding and assuming you can just refund it. In many states, once tax is withheld, you as the employer do not hand it back. The employee has to claim it on their state return. That is extra work and a smaller paycheck for a new hire who was counting on the exemption.

The fifth is setting it and forgetting it. Military life moves fast. A PCS or a change in orders can change the answer. Build a quick review into your process so an old form does not drive today's payroll.

None of this has to be hard. Collect the form, apply the choice, register where needed, and check it again when orders change. A strong hiring effort pairs clean payroll with real support for the family, whether through a military spouse returnship program or steady remote roles.

Where BMR Fits

Getting withholding right is part of being a good employer for military families. Sourcing them is the other part.

That is what BMR does. Employers use BMR to reach military spouses and veterans who are ready to work. More than 1,000 new profiles are added every month. Over 60,000 resumes have been built on the platform. The talent is there, and it keeps growing.

If you want to hire from that pool, reach out through our hire page. We will help you connect with military spouses and veterans who fit your open roles.

For more on the business side, see our guides on the business case for hiring military spouses and how to build a spouse hiring program that lasts.

One last note. Confirm any tax step here with the specific state Department of Revenue and a tax professional. Rules change, and they vary by state. This guide points you in the right direction. It is not tax advice for your books.