September 2026
A Guide For Business Owners
Working from home can save you a commute. It may also save you some money at tax time.
If you’re self-employed and use part of your home for your business, you may qualify for the home office deduction. The IRS has specific requirements for claiming it, though, and simply answering emails from your kitchen table once in a while won’t get you there.
So, what are the IRS rules for the home office deduction in 2026?
Here’s what business owners need to know.
The home office deduction generally applies to self-employed taxpayers who use part of their home for business.
Your workspace may qualify when you use it regularly and exclusively as:
Your home office can also qualify as your principal place of business when you use it for administrative or management work and you do not have another fixed location where you conduct substantial administrative or management activities.
That matters for contractors, consultants, sales professionals, and other business owners who spend much of the day working somewhere else. Your actual services may happen at client locations while your home office remains the place where you handle scheduling, invoicing, bookkeeping, and other business administration.
One important rule: most W-2 employees cannot claim a federal home office deduction for unreimbursed employee expenses. If you own a C corporation or S corporation and also work as its employee, talk with your tax advisor about how home office expenses should be handled for your specific entity.
Related: The ultimate guide to small business tax deductions checklist
Two of the most important home office deduction requirements are regular use and exclusive use.
You need to use the space for business on a regular basis.
An office you work from several days a week has a much stronger case than a room you use for business a few times during the year. The IRS looks at the facts and circumstances, so there is no universal minimum number of hours you need to spend there.
Consistency matters.
The area you claim generally needs to be used only for your business.
It does not have to be an entire room. A separately identifiable portion of a room can qualify, and the IRS does not require a permanent wall or divider around it.
The key is how you use the space.
Say you have a desk and filing area in the corner of a spare bedroom. If that specific area is used only for your business, it may qualify. If the desk doubles as the family homework station every evening, you could have a problem with the exclusive-use requirement.
The IRS provides limited exceptions to this requirement for qualifying inventory storage and daycare use.
Once you know your home office qualifies, the next question is how much you can deduct.
The IRS gives qualifying taxpayers two ways to calculate the deduction.
The simplified method allows a deduction of $5 per square foot of qualifying home office space, up to 300 square feet.
That means the maximum deduction under this method is $1,500.
For example, if your qualifying office is 200 square feet:
200 square feet × $5 = $1,000 home office deduction
There is less record keeping involved, and you do not depreciate the business portion of your home when using this method.
The actual expense method uses the business percentage of your home to calculate qualifying expenses.
One common way to calculate that percentage is to divide your office square footage by your home’s total square footage.
If your office is 200 square feet and your home is 2,000 square feet, your business-use percentage would be 10%.
Depending on your situation, qualifying expenses can include the following:
Expenses that apply directly to the office may receive different treatment from expenses that benefit the entire home.
Here’s a simple example.
Assume a renter has a 200-square-foot office inside a 2,000-square-foot home, giving them a 10% business-use percentage. During the year, they pay $18,000 in rent, $3,600 in utilities, $600 in renters insurance, and $800 in qualifying general maintenance.
That adds up to $23,000 of home expenses. At a 10% business-use percentage, $2,300 could be deducted. Using the simplified method for the same 200-square-foot office could produce a $1,000 deduction.
In that example, the actual expense method could produce the larger deduction. Your numbers may tell a very different story.
There are also income limitations, depreciation rules, and expense-allocation rules that can affect the final deductible amount.
You can choose between the simplified and actual expense methods each tax year. Once you elect the simplified method on a timely filed original return for that year, you cannot later switch methods for that same tax year.
There is no single method that gives every business owner the biggest deduction.
The simplified method tends to be easier because there are fewer expenses to track and no depreciation of the home itself.
The actual expense method deserves a closer look when your housing costs are high, your qualifying office takes up a significant percentage of the home, or you have substantial expenses that can be allocated to the office.
Running both calculations before filing is often worthwhile.
A few minutes of math can make a meaningful difference in your tax bill.
You may have heard that claiming a home office automatically raises a red flag with the IRS. Claiming a valid home office deduction does not automatically trigger an IRS audit. The important thing is claiming a deduction you can support.
Here are some of the mistakes we recommend watching for.
Claiming space that is also used personally
For most taxpayers, the exclusive-use test is exactly what it sounds like. A dining room table used for family dinners and business meetings generally does not become a qualifying home office.
Estimating your office size too generously
Measure the actual area used for business and keep a record of how you calculated it. Under the simplified method, the IRS limits the calculation to 300 square feet.
Assuming remote work automatically qualifies
Working from home does not automatically create a federal deduction. Your tax status and the way the space is used matter. Most employees receiving a W-2 cannot deduct an unreimbursed home office on their federal return under the current rules.
Deducting 100% of whole-house expenses
With the actual expense method, expenses that benefit the entire home generally need to be allocated based on your business-use percentage. A repair that applies only to the qualifying office may receive different treatment.
Keeping weak records
If you use the actual expense method, keep documentation for the expenses included in your calculation. It is also helpful to retain your office measurements and information showing how the space is used.
Good records make tax preparation easier and give you something concrete to rely on if questions come up later.
Homeowners should think beyond this year’s deduction when choosing a calculation method. When you use the actual expense method, depreciation may be allowable on the business portion of your home. That depreciation can affect your taxes when you eventually sell the property.
Generally, gain attributable to depreciation allowed or allowable for business use after May 6, 1997 cannot be excluded under the usual home-sale gain exclusion rules. Your home’s basis also needs to reflect depreciation that was allowable, even when you didn’t claim the deduction.
That last part is easy to overlook.
Simply skipping the depreciation calculation while using actual expenses does not necessarily make the future tax issue disappear.
The simplified method handles depreciation differently. For years you use the simplified method, depreciation on the qualifying portion of the home is treated as zero. Those years therefore do not create depreciation recapture from the home office deduction.
If you expect to sell your home in the coming years, this is one more factor to include when comparing your options.
The basic home office tax deduction rules come down to a few questions:
Do you qualify?
How much of your home is actually used for business?
Which calculation method gives you the most beneficial result for your situation?
Those questions sound simple enough. Once mortgage interest, rent, utilities, depreciation, business income limitations, and entity structure enter the calculation, the answer can get more complicated.
That’s where we can help.
The team at Lakes Area CPAs can calculate your home office deduction using your actual numbers, compare the available methods, and help you understand how the deduction fits into your overall tax picture.
If you want to know what your home office could mean for your next tax return, contact Lakes Area CPAs for a personalized home-office deduction calculation.
For more tax deduction tips from the Lakes Area CPAs, follow our social media updates here.
