Quick summary

  • Purpose: Reduce taxable income by claiming business-related home expenses for a qualified workspace.
  • Who most commonly qualifies: sole proprietors, independent contractors, gig workers, and certain statutory employees. (Most W‑2 employees cannot claim it for tax years 2018–2025.)
  • Two methods: Regular (actual expenses + depreciation) and Simplified ($5/sq ft, up to 300 sq ft).

Who qualifies and key limits

The IRS requires three central rules for a space to qualify:

  1. Exclusive use — the area must be used only for your trade or business. Occasional personal use typically disqualifies the space for that time. (See IRS Pub. 587.)
  2. Regular use — you must use the space on a continuing basis for business activities.
  3. Principal place of business — the home office must be where you conduct administrative or management tasks and have no other fixed location where you conduct substantial business activity.

In my practice advising freelancers and small‑business owners, the biggest misconception I see is that any remote worker qualifies. For tax years 2018–2025, miscellaneous itemized employee expenses (including most unreimbursed home office expenses for W‑2 employees) are suspended under the tax law, so nearly all employees cannot claim the home office deduction. Self‑employed taxpayers filing Schedule C generally remain eligible. (IRS guidance: Home Office Deduction; Pub. 587.)

Exceptions and special cases

  • Storage: A portion of your home used exclusively for storage of inventory or product samples may qualify even if it isn’t your principal place of business.
  • Daycare: Home daycare providers follow a different set of rules (also covered in IRS Pub. 587).
  • Statutory exceptions: Certain categories (e.g., qualified performing artists, reservists, some state/local government fee‑based officials) may still deduct employee business expenses in limited cases — consult a tax pro.

Two methods: simplified vs regular

Simplified method

  • Flat rate: $5 per square foot of qualified space, up to 300 sq ft (maximum $1,500).
  • No depreciation allowed and record‑keeping is simpler.
  • Good when the office is small, expenses are low, or you want to avoid depreciation recapture complexity.

Regular method (actual expenses)

  • You allocate direct and indirect expenses to the business percentage of your home.
  • Direct expenses: Costs only for the business part (e.g., painting the office) — fully deductible.
  • Indirect expenses: Mortgage interest, rent, utilities, insurance, repairs, and depreciation — deductible in proportion to business use.
  • File Form 8829 with Schedule C (sole proprietors) to calculate allowable deduction; use Form 4562 if you claim depreciation.
  • Depreciation: Claimable on the business portion of home basis. Note: any depreciation you claim (or could have claimed) must be recaptured when you sell the home and can increase taxable gain. (IRS Pub. 587)
  • Limitation: The home office deduction generally cannot exceed net income from the business; excess may be carried forward.

Example: Calculating the regular method

  • Home size: 2,000 sq ft. Home office: 200 sq ft (10% business use).
  • Annual mortgage interest + utilities + insurance + repairs allocated to home = $20,000.
  • Business portion = 10% × $20,000 = $2,000 ordinary deduction, plus allowed depreciation.

Example: Choosing a method

  • Small office, minimal expenses: simplified method may be cleaner and yield close results.
  • High mortgage interest, substantial depreciation potential, or large office: regular method could be larger but requires stronger documentation and care with depreciation recapture.

Documentation and recordkeeping (what I require from clients)

Good documentation makes audits painless. Keep:

  • Floor plan or measurements showing square footage of home and office.
  • Receipts and statements for mortgage interest, rent, utilities, insurance, repairs, and improvements.
  • A contemporaneous log or calendar showing regular business use (for part‑time but recurring schedules).
  • Copies of Forms 8829, Schedule C, and Form 4562 (if claiming depreciation).

I advise clients to keep records for at least three years, and for depreciation or sale‑related records keep them until the period of limitations for reporting sale of the home expires and beyond — in practice, keep basis and depreciation records until you sell the house and report gain.

Common pitfalls and audit red flags

  • Nonexclusive use: A couch or multipurpose room used for business and personal activities is often denied.
  • Improper allocation: Overstating the business percentage of the home (measuring examples should match reasonable floor plans).
  • Failing to report depreciation: If you claimed the deduction but failed to take depreciation, IRS rules treat depreciation as allowable — you may have to recapture when you sell.
  • Employee status confusion: Claiming the deduction as a W‑2 employee when you’re not eligible draws attention. If your employer requires you to work from home without reimbursement, ask about an accountable expense reimbursement plan.

Depreciation and sale of your home

If you claimed depreciation under the regular method, the business portion of depreciation must be recaptured when you sell the home. That usually increases taxable gain on sale and can affect your Section 121 exclusion (the primary residence exclusion) in some situations. Always track depreciation taken and be prepared to report it on sale. (IRS Pub. 587)

How to choose between methods: practical checklist

  • Estimate both methods. Simplified is capped at $1,500 — if your regular‑method deduction is smaller than that, use simplified.
  • Factor in future plans. If you expect to sell the house and dislike potential depreciation recapture, simplified avoids that issue.
  • Time and records. If you dislike bookkeeping and have modest expenses, simplified is attractive.

Working‑for‑an‑employer (W‑2) and remote work: reimbursement alternatives

Because of the suspension of miscellaneous itemized deductions for 2018–2025, most employees can’t claim the home office deduction on their returns. Instead:

  • Ask your employer for an accountable reimbursement plan for home office expenses — reimbursements under an accountable plan are not taxable to you and are deductible by the employer.
  • Track employer‑provided reimbursement policies and get written clarification if you believe your situation is exceptional.

Practical tips I give clients

  • Measure and photograph. Keep dated photos and a quick floor plan with square footage calculations.
  • Separate expenses. Pay business‑only purchases (e.g., a monitor or office chair) from a business account and keep receipts.
  • Revisit annually. The business portion and the best method can change year to year.

Links and resources

Internal FinHelp guides you may find useful:

Final notes and disclaimer

This article summarizes general federal tax rules current as of 2025 and is intended for educational purposes only. Tax law is complex and fact‑specific. In my practice I routinely review clients’ home layouts and receipts before recommending a method. Consult a CPA or tax advisor to apply these rules to your specific situation and for state tax differences.

Sources: IRS, Business Use of Your Home (Pub. 587) and the IRS Home Office Deduction guidance. Additional implementation tips are based on professional experience advising remote workers and small‑business clients.