Working from home has become routine for many business owners, consultants, and freelancers. That makes the home office deduction one of the most common questions at tax time. It can also be one of the most misunderstood. Some people assume any home workspace qualifies, while others avoid the deduction entirely because they worry it will draw attention. The reality sits in between: the deduction has specific requirements, and when those are met and documented, it is a legitimate part of the tax code. If you would like help understanding how it may apply to you, a complimentary, no-obligation wealth and tax review is a good place to start.
This guide explains who may qualify, the two main calculation methods, how the deduction works for different types of business owners, and how it can affect other parts of your tax picture, including a future home sale.
Who May Qualify
The home office deduction is generally available to self-employed individuals and certain business owners who use part of their home for business. It is generally not available to W-2 employees under current federal law, even if they work from home full time for their employer. That distinction surprises many remote workers.
To qualify, the space generally must meet two tests:
Regular and exclusive use. The area must be used regularly and only for business. A guest room that doubles as an office, or a kitchen table used for work during the day, typically does not meet the exclusive use requirement.
Principal place of business. The home office generally must be your principal place of business, or a place where you regularly meet clients, or a separate structure used for business. Administrative and management work done at home can count in many cases, even if you perform services elsewhere.
There are limited exceptions to the exclusive use rule, such as certain day care facilities and storage of inventory, but most people should plan around the standard tests.
The Two Calculation Methods
The simplified method. This approach multiplies the square footage of the office by a rate set by the IRS, up to a maximum square footage. It requires less recordkeeping and no depreciation calculation. The tradeoff is that it may produce a smaller deduction for people with higher home costs.
The regular method. This approach calculates the business percentage of the home, usually by comparing the office square footage to the total square footage, and applies that percentage to actual home expenses. Eligible expenses can include mortgage interest, property taxes, insurance, utilities, repairs, and depreciation on the business portion of the home. Expenses that apply only to the office, such as painting that room, may be fully deductible.
The regular method usually requires more documentation, and it introduces depreciation, which has consequences later. Many people compare both methods each year. The IRS allows taxpayers to choose the method that fits each year, subject to certain rules.
Income Limits on the Deduction
The home office deduction is generally limited to the income from the business that uses the office. If the business has a loss, or very little income, part of the deduction may not be usable in the current year. Under the regular method, disallowed amounts may carry forward to future years. This limit is one reason the deduction tends to be most useful for established businesses with steady income.
How It Works for Different Business Structures
How you claim the deduction depends on how your business is organized:
Sole proprietors and single-member LLCs. The deduction is generally claimed on the individual return through the business schedule and a related form.
Partners. Partners may be able to deduct certain unreimbursed partnership expenses, including a home office, if the partnership agreement requires them to pay those costs.
S corporation owners. Because owners who work in the business are employees, a common approach is for the corporation to reimburse the owner for home office costs through an accountable plan. The corporation deducts the reimbursement, and it is generally not taxable to the owner when the plan rules are followed.
Our guide to how to pay yourself as a business owner explains how reimbursements fit alongside salary and distributions.
Depreciation and Selling Your Home
If you use the regular method, part of your home is depreciated as business property. When you later sell the home, the depreciation claimed after a certain date generally cannot be excluded under the home sale exclusion and may be taxed as depreciation recapture. The simplified method does not involve depreciation, which avoids this issue.
This is a good example of why short-term deductions should be evaluated with the long term in mind. A larger deduction today can create a tax item later. The size of that effect depends on how long you use the office, the value of the home, and when you sell. For a related discussion, see our article on depreciation recapture.
Documentation That Supports the Deduction
A simple floor plan or measurements showing office and total home square footage
Photos of the office showing it is set up and used for business
Utility bills, insurance statements, mortgage interest forms, and property tax bills
Receipts for repairs and improvements, noting which apply to the office
Records of client meetings held at home, if applicable
Keeping this file current each year is far easier than reconstructing it later.
Wisconsin Considerations
Wisconsin generally starts with federal income for business owners, so a home office deduction claimed on a federal business schedule often flows through to the Wisconsin return. Some differences between federal and Wisconsin rules exist, particularly around depreciation, so confirm how your state return handles the deduction with a tax professional.
Next Steps
The home office deduction can be a reasonable part of a business owner's tax plan when the space truly qualifies and the records support it. For owners in Waunakee, Madison, and throughout Wisconsin, the decision often comes down to which method fits, how it interacts with the business structure, and how it affects a future home sale.
If you would like help reviewing your home office alongside your broader tax and financial plan, request a complimentary, no-obligation wealth and tax review. Our tax planning and preparation team works with self-employed professionals and business owners across the state.
Frequently Asked Questions
Can W-2 employees take the home office deduction?
Under current federal law, W-2 employees generally cannot deduct home office expenses on their federal return, even if they work from home.
What does exclusive use mean?
Exclusive use generally means the space is used only for business. Occasional personal use of the area can disqualify it.
Which method is better, simplified or regular?
It depends on your home costs, recordkeeping preferences, and plans to sell the home. Many people compare both methods each year with a tax professional.
Does a home office deduction affect selling my home?
If you use the regular method, depreciation claimed on the office may be taxable when you sell, even if the rest of the gain is excluded.
How do S corporation owners deduct a home office?
A common approach is reimbursement from the corporation through an accountable plan, which keeps the reimbursement out of wages when the rules are followed.
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About Compound Wealth
Compound Wealth is an integrated tax, wealth management, accounting, and business transition firm serving business owners, professionals, real estate investors, and families. Rather than viewing financial decisions independently, the firm takes a coordinated approach that considers how tax planning, wealth management, accounting, and long-term planning often intersect. This planning-first philosophy helps clients evaluate financial decisions within the context of their broader objectives.
