How work-from-home expenses change your tax picture

Working from home creates two separate tax realities: one for self-employed taxpayers (sole proprietors, many freelancers, and gig workers) and another for employees. Self-employed workers can generally deduct ordinary and necessary business expenses, including a home office portion of rent, utilities, and certain equipment (IRS Publication 587; Form 8829). Employees, by contrast, are largely unable to claim unreimbursed employee business expenses for federal income tax through tax year 2025 due to the Tax Cuts and Jobs Act (TCJA) suspension.

This distinction is the single biggest tax implication of working from home. If you run a business from your residence, properly claimed home-office deductions lower your taxable business income. If you’re an employee, most W-2 workers will not receive the same federal deduction — although some states still allow employee deductions and some employers offer reimbursements.

Who qualifies for home-office and related deductions?

  • Self-employed taxpayers: Generally eligible. You report business income and expenses on Schedule C (Form 1040). If you use the regular home-office method, use Form 8829 to calculate allowable deductions; the simplified method is an alternative. (IRS Publication 587)
  • Employees: From 2018 through 2025, unreimbursed employee business expenses are suspended for federal taxes under the TCJA. Exceptions exist for certain categories (active-duty reservists, qualified performing artists, fee-basis government officials) but they are narrow. Check state rules for possible deductions. (IRS guidance)
  • Partners and S-corporation owners: Deductions depend on business structure and whether expenses are reimbursed under an accountable plan.

In my practice, I often see contractors and small-business owners leave money on the table because they either don’t track square footage or they mix personal and business receipts. Accurate documentation is the main difference between a clean deduction that stands up to review and one that draws IRS questions.

Two methods to claim the home-office deduction

You can claim the home-office deduction two ways when you are self-employed:

  1. Simplified method
  • Multiply $5 by the allowable square footage (up to 300 sq ft). Maximum deduction $1,500. No Form 8829 required; enter the deduction directly on Schedule C. This method reduces recordkeeping but may yield a smaller deduction for larger or higher-cost homes. (IRS Publication 587)
  1. Regular (actual expense) method
  • Pro-rate real costs based on the business-use percentage of your home (business square footage ÷ total finished square footage). Deduct direct expenses in full (painting the office), and indirect expenses (mortgage interest, rent, utilities, insurance) proportionally. Use Form 8829 to calculate and report. Depreciation of the business portion of the home can also apply.

Choosing the right method requires running the numbers. The regular method often pays off when you have high mortgage interest, property taxes, or large actual expenses. The simplified method is easier but capped.

What expenses are commonly deductible for the self-employed?

  • Home office (either simplified or regular method) — must be exclusive and regular use for business, and the space must be your principal place of business or used to meet clients/customers. (IRS Publication 587)
  • Utilities and internet — deduct the business portion for self-employed taxpayers. If internet or phone is used both personally and for business, allocate the business share.
  • Office supplies and small equipment — fully deductible in the year of purchase as ordinary and necessary business expenses.
  • Computers, office furniture, and larger equipment — either expense under Section 179 (where eligible) or depreciate over time; the business-use percentage applies.
  • Repairs and maintenance — allocate direct costs to the office (e.g., repainting the office) and prorate general repairs.

Expenses not allowed as home-office deductions include housing costs unrelated to the business use (personal living expenses) and commuting costs between your home and another regular work location.

Example calculation (regular method)

Suppose your home is 2,000 sq ft and your home office is 200 sq ft (10%). Annual utilities total $3,000 and rent is $18,000. Under the regular method you could allocate 10% of utilities ($300) and 10% of rent ($1,800) to your business, plus any direct expenses for the office. If you use the simplified method in the same example and the office is 200 sq ft, deduction = 200 x $5 = $1,000.

Recordkeeping: what to keep and for how long

  • Square footage floor plan or dimensions showing office space and total home area.
  • Receipts and invoices for utilities, repairs, supplies, equipment, and services.
  • Canceled checks, bank statements, and credit card records that support amounts claimed.
  • Lease or mortgage statements showing rent or interest and property tax amounts.
  • A log of business vs personal use for mixed-use services like internet, phone, or vehicles.

Keep records at least three years from the date you file the return that claims the deduction; seven years is safer for more complex filings involving depreciation or significant deductions. (IRS recordkeeping guidance)

Common mistakes and audit triggers

  • Claiming a home office that is not used exclusively for business. Mixed-use rooms (dining room used for both family meals and work) typically do not qualify.
  • Miscalculating or failing to document square footage and business-use percentage.
  • Treating commuting from home to another employer location as a deductible business expense — commuting is generally not deductible.
  • Failing to report reimbursements or employer-provided stipends correctly.

The IRS pays close attention when home-office deductions reduce taxable income on returns that also claim large business losses repeatedly. Accurate records and conservative, supportable allocations reduce risk.

State tax differences and employer reimbursements

Many states do not automatically follow federal rules on unreimbursed employee expenses; some allow deductions that the federal government disallows. Also, some employers offer accountable plan reimbursements (where you submit receipts and are reimbursed) or nonaccountable stipends. Accountable plan reimbursements are not taxable to the employee; nonaccountable payments are taxable.

If your employer offers reimbursement, choose an accountable plan if possible. If unsure about state treatment, consult a tax professional or your state revenue department.

Practical tips and my experience

  • Start with a simple spreadsheet or expense-tracking app and categorize expenses as you incur them. I recommend clients save one dedicated business card or bank account to simplify matching purchases.
  • Measure your office carefully and keep a dated floor plan. I’ve seen audits resolved quickly when a client produced a dated floor plan and contemporaneous photos showing exclusive business use.
  • If you work both as an employee and are doing side freelance work, keep business activity and expenses strictly separated to avoid confusion.

In one recent client engagement, a freelance consultant who used the regular method recovered nearly $2,000 in taxes by properly allocating utilities and depreciation. The difference came down to claiming depreciation on a business computer and allocating mortgage interest correctly on Form 8829.

FAQs — short answers

  • Can employees deduct internet or utilities? Generally no for federal taxes through 2025 unless eligible under narrow exceptions; self-employed taxpayers can deduct the business share. (IRS)
  • What is the simplified method limit? $5 per sq ft, up to 300 sq ft (max $1,500). (IRS Publication 587)
  • Do I need Form 8829? Use it when claiming the regular home-office deduction on Schedule C. The simplified method does not require Form 8829.

Resources and further reading

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Professional disclaimer: This article is educational and reflects guidance current as of 2025. It is not individualized tax advice. For personalized advice, consult a CPA or enrolled agent who can review your full situation and state tax rules.