Think Your Home Is Too Small for a Home Office Deduction? Think Again

A home office does not have to be a separate room. In fact, even a very small, clearly defined area of your home may qualify. And for many business owners, the most valuable tax benefit may not be the home office expense itself. It may be the ability to turn trips from home to other business locations into deductible business mileage.

There is no minimum square footage requirement

The tax rules do not require a home office to occupy an entire room. The IRS specifically allows a separately identifiable space within a room, and the area does not need to be divided by a permanent wall or partition. That means a desk, workstation, or other small dedicated area can potentially qualify.

The key is not the size of the space. The key is how you use it. In most situations, the area must be used both regularly and exclusively for your trade or business. A kitchen table that doubles as the family dinner table generally will not meet the exclusive use test. A dedicated workspace used only for the business may.

The bigger benefit may be your business mileage

Many business owners focus on the portion of rent, mortgage interest, utilities, insurance, depreciation, or other home expenses that may be associated with a qualifying home office. Those deductions can be useful, but a qualifying home office can have another important consequence: it may establish your home as your principal place of business.

When your home qualifies as your principal place of business, daily transportation between your home and another work location in the same trade or business can generally be treated as business transportation rather than nondeductible commuting. For a contractor, consultant, salesperson, or other owner who regularly drives to customer locations or job sites, that distinction can add up quickly.

How can a small home office become your principal place of business?

Your home office can qualify as your principal place of business even when most of the revenue producing work happens somewhere else. One important route to qualification is using the home office exclusively and regularly for the administrative or management activities of the business when you have no other fixed location where you conduct substantial administrative or management activities.

Those activities can include keeping books and records, billing customers, scheduling appointments, ordering supplies, preparing reports, and similar management work. The IRS even gives examples of professionals and tradespeople who perform their primary services away from home but still qualify because their home office is where the administrative side of the business is handled.

Having access to suitable space somewhere else does not automatically disqualify the home office. What matters is whether you actually conduct substantial administrative or management activities at another fixed business location.

Regular and exclusive use still matters

A tiny office can qualify, but an occasional workspace generally will not. The IRS requires regular business use, and incidental or sporadic use is not enough. The exclusive use rule also means that, with limited exceptions such as certain inventory storage and daycare uses, the business area cannot double as personal space.

A practical way to support the deduction is to identify and measure the dedicated business area, keep a photo or simple floor plan showing the space, and retain records supporting the expenses used to calculate the deduction.

What about S corporation owners?

S corporation shareholders need to be especially careful about how home office expenses are handled. The shareholder generally should not simply claim the corporation's home office costs as an unreimbursed employee expense on the individual return. Instead, when appropriate, the corporation can reimburse qualifying business use of the home under an accountable plan.

That reimbursement approach can allow the corporation to deduct the business expense while reimbursing the shareholder without treating a properly substantiated accountable plan reimbursement as taxable wages. The arrangement should be documented, and the shareholder should provide the corporation with appropriate substantiation for the business use of the home.

This is one reason we prefer to consider home office expenses as part of the owner's overall tax planning rather than as a last minute tax return adjustment. Learn more about our proactive tax planning for business owners.

A few examples

Consultant: A consultant works primarily at client locations but uses a dedicated desk at home every evening for billing, scheduling, recordkeeping, and preparing client reports. There is no other fixed location where substantial administrative work is performed.

Contractor: A contractor performs nearly all physical work at customer job sites but uses a small dedicated home workspace for estimates, ordering materials, bookkeeping, and scheduling crews.

Sales professional: A self employed salesperson spends most days visiting customers but maintains a dedicated home office for appointments, orders, reports, and other administrative work.

The simplified method may make the deduction easier

For taxpayers who claim the deduction directly, the IRS offers a simplified method as an alternative to allocating actual home expenses. Under the current simplified method, the deduction is generally calculated at $5 per square foot of qualified business use, up to 300 square feet, subject to the applicable rules and income limitation. Depending on the facts, the actual expense method may produce a larger deduction, so it can be worth comparing the two.

The bottom line

Do not dismiss the home office rules simply because you do not have a spare bedroom or a large formal office. A small, clearly defined business only space may be enough. More importantly, if that space qualifies as your principal place of business, the tax benefit may extend beyond the home itself and affect the deductibility of your business driving.

At T. S. Allen & Associates, we help business owners look beyond individual deductions and coordinate tax strategies with the way the business actually operates. Explore our accounting and tax services for small and midsize businesses or learn more about our tax preparation and resolution services.

We provide these articles as general information and not individualized tax advice. They do not constitute a client relationship with you, and any information provided here should be applied at your own risk.