Can I Write Off My Home Office?

If your kitchen table has doubled as your business HQ or you’re managing rental properties from a spare room, you might be wondering, Can I write off my home office?

The short answer? Yes, if you meet specific criteria. For business owners and real estate investors, this deduction can help lower your taxable income, legally and strategically, but there are some important rules and exceptions you need to know first.

First Things First: Do You Qualify?

Before anything else, ask yourself these two key questions:

1. Do You Use a Dedicated Space?

The IRS requires exclusive and regular use of the space for business. That means:

• It’s not shared with personal or family use.
• It’s used consistently for your business operations or managing investments.

No, your couch doesn’t count, even if you’re answering emails from it daily.

2. Is It Your Principal Place of Business?

You don’t need to do everything from home, but the home office must be your main hub for administrative or management activities.

For real estate investors, this includes:

• Managing rental agreements
• Scheduling maintenance
• Handling bookkeeping or tenant communications

For business owners, this could mean:

• Running your ecommerce business
• Managing clients or projects
• Conducting business meetings or doing strategic planning

Real Estate Investors: Do You Have to Participate Materially?

Not necessarily.

This is one of the biggest misconceptions out there when it comes to home office deductions. Many real estate investors believe they need to materially participate or be classified as a Real Estate Professional to qualify for the home office write-off, but the truth is more nuanced.

The IRS Does Allow Deductions for Passive Real Estate Activity

Even if your real estate activity is considered “passive” (i.e., you don’t meet the material participation tests), you may still qualify for a home office deduction if you’re managing your properties from home and using a dedicated space regularly and exclusively for that purpose.

Activities that support this include:

• Managing bookkeeping or taxes for your properties
• Reviewing leases, handling tenant communication
• Coordinating with property managers or service vendors
• Researching new markets or property acquisitions
• Managing legal compliance or insurance policies

The Legal Precedent: Curphey v. Commissioner

A key court case that supports this interpretation is Curphey v. Commissioner (1981). In this case, a taxpayer (a dermatologist who also managed several rental properties) successfully argued for a home office deduction related to managing those rentals—even though the properties were not considered a separate “trade or business.” The Tax Court ruled in his favor, noting that the home office was essential for managing the properties and thus qualified as deductible.

This case remains one of the clearest examples that material participation is not a strict requirement for all real estate investors—especially when the administrative side of the investment activity is handled from a dedicated space in the home.

So What’s the Bottom Line for Real Estate Investors?

If you’re actively managing rentals, you’re good to go.

If you’re passively managing but using a home office regularly and exclusively for investment activities, you may still qualify.

You do not need to meet the 750-hour rule or be classified as a “real estate professional” to claim this deduction—if your setup aligns with the rules and case law.

Still, documentation is key. Keep records of what you do in your home office, log your hours and activities, and make sure the space is used solely for business or investment purposes.

What Expenses Can You Write Off?

Now for the fun part, what you can actually deduct.

Direct Expenses (100% Deductible)

• Repairs and maintenance in the office itself
• Office-specific furniture (desks, chairs, file cabinets)
• Business-only supplies and decor

Indirect Expenses (Pro-Rated)

These are shared home expenses split based on the percentage of your home used as an office:

• Mortgage interest or rent
• Utilities (electric, water, gas)
• Property taxes
• Internet service
• Homeowner’s or renter’s insurance
• Depreciation (if you own your home)
• Cleaning services or security systems

Example:

If your home office takes up 10% of your home’s square footage, you can typically deduct 10% of qualifying shared expenses.

Choose Your Method: Simplified vs. Actual

There are two IRS-approved methods for calculating your deduction.

1. Simplified Method

• $5 per square foot (up to 300 sq. ft.)
• Max deduction: $1,500
• No detailed records required
• Fast and easy, perfect for smaller offices

2. Actual Expense Method

• Deduct a percentage of actual expenses
• Requires detailed record-keeping (receipts, utility bills, depreciation)
• Offers a larger deduction in high-cost areas or for bigger offices

Pro Tip:

Real estate investors and business owners with sizable homes or higher overhead often benefit more from the actual method.

S-Corp or LLC? Here’s What You Need to Know

If your business is an S-Corp, you can’t deduct the home office directly on your personal taxes. Instead, set up an Accountable Plan so the corporation can reimburse you tax-free.

Here’s how:

1. Measure your office space and calculate the business use percentage.
2. Keep records of eligible expenses.
3. Submit a written expense report to your S-Corp.
4. The business reimburses you—tax-free for you and deductible for the company.

If you’re a single-member LLC taxed as a sole proprietorship, you can typically take the deduction directly on Schedule C.

Avoid These Common Mistakes

Even legitimate deductions can raise eyebrows if not done right. Here are the top traps to steer clear of:

• Using the same space for personal and business use
• Forgetting to update your office measurements when you move or renovate
• Claiming excessive percentages (e.g., 40% of your house)
• Skipping documentation—no receipts = no deduction

Always take photos of your workspace and keep records of your calculations. The IRS loves proof.

Real-Life Example for a Real Estate Investor

Let’s say you’re a full-time real estate investor with four properties. You dedicate a 150 sq. ft. room in your home (which is 2,000 sq. ft. total) solely for managing those properties.

That’s 7.5% of your home. If your total indirect expenses (mortgage interest, utilities, insurance) for the year are $18,000, you can deduct:

• $18,000 × 7.5% = $1,350

Add in a few hundred dollars in direct office expenses, and you’ve just knocked $1,500–$2,000 off your taxable income.

FAQs About the Home Office Deduction

Q: Can I deduct my internet if I use it for both work and personal use?
A: Yes, but only the business-use portion. Track your usage or estimate a reasonable percentage.

Q: I occasionally meet clients in my home office. Does that help?
A: Absolutely. It reinforces the idea that your home office is central to your business operations.

Q: Can I take the home office deduction if I also have a co-working membership?
A: Maybe. The IRS allows a home office deduction only if your home office is your principal place of business, so if you’re mainly using the co-working space, you might not qualify.

The Bottom Line

There you have it. Yes, you can write off your home office if you’re a business owner or a real estate investor who actively works from home. But like all good things with the IRS, it comes with a side of paperwork and precision.

Take the time to:

• Evaluate your eligibility
• Measure your workspace accurately
• Choose the right deduction method
• Document everything

When done right, this deduction can shave thousands off your tax bill, and that’s money better spent growing your business or adding to your portfolio.

Still unsure if your setup qualifies? It’s always a smart move to consult with a tax pro, especially if you’re juggling multiple entities or property investments.