Home Office Deductions

By Paul Dion, CPA

As we wind up another tax season, I hope everyone who is eligible is taking full advantage of their home office deduction.

For sake of definition, under the IRS rules, a taxpayer is allowed to deduct expenses related to business use of a home, but only if the space is used “exclusively” on a “regular basis”. To qualify for a home office deduction, you must meet one of the following requirements:

    • Exclusive and regular use as your principal place of business
    • A place for meeting with clients or customers in the ordinary course of business
    • A place for the taxpayer to perform administrative or management activities associated with the business, provided there is no other fixed location from which the taxpayer conducts a substantial amount of such administrative or management activities

A separate structure not attached to your dwelling unit that is used regularly and exclusively for your trade or profession also qualifies as a home office under the IRS definition.

The exclusive-use test is satisfied if a specific portion of the taxpayer’s home is used solely for business purposes or inventory storage. The regular-basis test is satisfied if the space is used on a continuing basis for business purposes. Incidental business use does not qualify.

In determining the principal place of business, the IRS considers two factors: Does the taxpayer spend more business-related time in the home office than anywhere else? Are the most significant revenue-generating activities performed in the home office? Both of these factors must be considered when determining the principal place of business.

To qualify for the home-office deduction, an employee must satisfy two additional criteria. First, the use of the home office must be for the convenience of the employer (for example, the employer does not provide a space for the employee to do his/her job). Second, the taxpayer does not rent all or part of the home to the employer and use the rented portion to perform services as an employee for the employer. Employees who telecommute may be able to satisfy the requirements for the home-office deduction.

Home office expenses are classified into three categories:

Direct business expenses relate to expenses incurred for the business part of your home such as additional phone lines, long-distance calls and optional phone services. Basic local telephone service charges (that is, monthly access charges) for the first phone line in the residence generally do not qualify for the deduction.

Indirect business expenses are expenditures that are related to running your home such as mortgage or rent, insurance, real estate taxes, utilities, and repairs.

Unrelated expenses such as painting a room that is not used for business or lawn care are not deductible.

Deduction limit

You can deduct all your business expenses related to the use of your home if your gross income from the business use of your home equals or exceeds your total business expenses (including depreciation). But, if your gross income from the business use of your home is less than your total business expenses, your deduction for certain expenses for the business use of your home is limited.

Nondeductible expenses such as insurance, utilities, and depreciation that are allocable to the business are limited to the gross income from the business use of your home minus the sum of the following:

    • The business part of expenses you could deduct even if you did not use your home for business (such as mortgage interest, real estate taxes, and casualty and theft losses that are allowable as itemized deductions on Schedule A (Form 1040)). These expenses are discussed in detail under Deducting Expenses, later.
    • The business expenses that relate to the business activity in the home (for example, business phone, supplies, and depreciation on equipment), but not to the use of the home itself.

If your deductions are greater than the current year’s limit, you can carry over the excess to the next year. They are subject to the deduction limit for that year, whether or not you live in the same home during that year.

One of the true benefits of being able to work from home are the deductions. There’s no better reason for working with a tax advisor than taking full advantage of the home office deductions that are available.

Paul Dion CPA CTC
Paul Dion operates a New England Regional CPA practice specializing in Proactive tax planning for Business owners with offices in Millbury, MA and Newport RI. He has been planning and preparing returns for small business and real estate agents for more than 25 years. To help his clients even more, Paul became a Certified Tax Coach in 2010. In his private practice he has helped businesses recover $3,000 to $7,000 or more in wasted tax dollars in a single year and has saved some businesses as much as $25,000 per year in wasted tax dollars.


Paul Dion - Speaker, Author, and Tax Advisor - has been planning and preparing returns for business owners for over 25 years with a specialty in helping real estate agents and investors. His passion is to help business owners legally pay the least amount of tax using court-tested and IRS-approved tax strategies. In addition, he continues to advance service offerings to include income saving strategies designed to deliver higher profits to your business.

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