February 2019 Update - Multistate Resident? Watch Out for Double Taxation & Fewer Taxpayers to Qualify for Home Office Deduction

Contrary to popular belief, there's nothing in the U.S. Constitution or federal law that prohibits multiple states from collecting tax on the same income. Although many states provide tax credits to prevent double taxation, those credits are sometimes unavailable. If you maintain residences in more than one state, here are some points to keep in mind.

Domicile vs. residence
Generally, if you're "domiciled" in a state, you're subject to that state's income tax on your worldwide income. Your domicile isn't necessarily where you spend most of your time. Rather, it's the location of your "true, fixed, permanent home" or the place "to which you intend to return whenever absent." Your domicile doesn't change - even if you spend little or no time there - until you establish domicile elsewhere.

Residence, on the other hand, is based on the amount of time you spend in a state. You're a resident if you have a "permanent place of abode" in a state and spend a minimum amount of time there - for example, at least 183 days per year. Many states impose their income taxes on residents' worldwide income even if they're domiciled in another state.

Potential solution
Suppose you live in State A and work in State B. Given the length of your commute, you keep an apartment in State B near your office and return to your home in State A only on weekends. State A taxes you as a domiciliary, while State B taxes you as a resident. Neither state offers a credit for taxes paid to another state, so your income is taxed twice.

One possible solution to such double taxation is to avoid maintaining a permanent place of abode in State B. However, State B may still have the power to tax your income from the job in State B because it's derived from a source within the state. Yet State B wouldn't be able to tax your income from other sources, such as investments you made in State A.

Minimize unnecessary taxes
This example illustrates just one way double taxation can arise when you divide your time between two or more states. Our firm can research applicable state law and identify ways to minimize exposure to unnecessary taxes.
Sidebar: How to establish domicile

Under the law of each state, tax credits are available only with respect to income taxes that are "properly due" to another state. But, when two states each claim you as a domiciliary, neither believes that taxes are properly due to the other. To avoid double taxation in this situation, you'll need to demonstrate your intent to abandon your domicile in one state and establish it in the other.

There are various ways to do so. For example, you might obtain a driver's license and register your car in the new state. You could also open bank accounts in the new state and use your new address for important financially related documents (such as insurance policies, tax returns, passports and wills). Other effective measures may include registering to vote in the new jurisdiction, subscribing to local newspapers and seeing local health care providers. Bear in mind, of course, that laws regarding domicile vary from state to state.

Fewer Taxpayers to Qualify for Home Office Deduction
Working from home has become commonplace for people in many jobs. But just because you have a home office space doesn't mean you can deduct expenses associated with it. Beginning with the 2018 tax year, fewer taxpayers will qualify for the home office deduction. Here's why.

Changes under the TCJA
For employees, home office expenses used to be a miscellaneous itemized deduction. Way back in 2017, this meant one could enjoy a tax benefit only if these expenses plus other miscellaneous itemized expenses (such as unreimbursed work-related travel, certain professional fees and investment expenses) exceeded 2% of adjusted gross income.

Starting in 2018 and continuing through 2025, however, employees can't deduct any home office expenses. Why? The Tax Cuts and Jobs Act (TCJA) suspends miscellaneous itemized deductions subject to the 2% floor for this period.
Note: If you're self-employed, you can still deduct eligible home office expenses against your self-employment income during the 2018 through 2025 period.
Other eligibility requirements

If you're self-employed, generally your home office must be your principal place of business, though there are exceptions.

Whether you're an employee or self-employed, the space must be used regularly (not just occasionally) and exclusively for business purposes. If, for example, your home office is also a guest bedroom, or your children do their homework there, you can't deduct the expenses associated with that space.

Deduction options
If eligible, you have two options for claiming the home office deduction. First, you can deduct a portion of your mortgage interest, property taxes, insurance, utilities and certain other expenses, as well as the depreciation allocable to the office space. This requires calculating, allocating and substantiating actual expenses.
A second approach is to use the simplified option. Here, only one simple calculation is necessary: $5 multiplied by the number of square feet of the office space. The simplified deduction is capped at $1,500 per year, based on a maximum of 300 square feet.

More rules and limits
Be aware that we've covered only a few of the rules and limits here. If you think you may qualify for the home office deduction on your 2018 return or would like to know if there's anything additional you need to do to become eligible, contact us.