Deduction Estimate
Size the home office deduction in two methods
Compare the simplified $5/sq ft method against a regular-method percentage estimate before you decide how to document it for filing.
Simplified methodRegular methodRuns locally
Your inputs
Compare simplified vs regular method instantly.
Loading…
Method
Deduction planning model
Use this model to compare simplified and regular-method outcomes side by side before you decide how to document the deduction. Final eligibility and limits still depend on your jurisdiction, records, and how the space is used.
- Simplified method shown as $5/sq ft capped at 300 sq ft (max $1,500).
- Regular method is a percentage-based estimate and may not reflect all limitations.
- Review exclusive-use and documentation requirements before filing.
Process
How it works
- 01
Enter office + home size
Dedicated workspace square footage and total home square footage.
- 02
Add eligible expenses
Rent or mortgage interest, utilities, insurance, maintenance.
- 03
See both methods
Simplified vs regular-method percentage estimate side-by-side.
- 04
Pick the documentation path
Decide which method to take into your filing process.
Frequently Asked Questions
Is this calculator tax advice?+
Use this calculator to compare simplified and regular-method scenarios before you decide how to document the deduction. Final eligibility and filing treatment still depend on your jurisdiction, records, and facts.
Who can usually claim a home office deduction?+
Self-employed workers often use this calculator to test whether a dedicated workspace could support a home office deduction. Many rules require the space to be used regularly and exclusively for business, but eligibility still depends on your jurisdiction and work arrangement.
What is the simplified method?+
The simplified method estimates your deduction as $5 per square foot of qualified office space, capped at 300 sq ft (a maximum of $1,500). Eligibility rules still apply.
What is the regular method?+
The regular method estimates your deduction as your business-use percentage (office sq ft divided by total home sq ft) multiplied by certain home expenses. Real tax rules may include additional limits and documentation requirements.
Do I qualify for the home office deduction?+
This tool helps you compare the numbers first, but qualification still matters. Many jurisdictions require the home office to be used regularly and exclusively for business, so review the rules that apply to your situation before filing.
What expenses can be included in the regular method?+
Common categories include rent (or mortgage interest), utilities, insurance, internet, and certain maintenance costs. Treatment can vary by jurisdiction and circumstance, so confirm which costs are deductible before you file.
What documentation should I keep?+
Keep a clear record of your office measurements, how you use the space, and receipts for eligible expenses. Documentation requirements vary, but good records make it easier to support your position if you file.
