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Deduction Estimate

Free Home Office Deduction Calculator

Compare the simplified $5/sq ft method against the regular-method percentage estimate. See which method saves more before you document it for filing.

Simplified methodRegular methodRuns locally
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Compare simplified vs regular method instantly.

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Method

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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

  1. 01

    Enter office + home size

    Dedicated workspace square footage and total home square footage.

  2. 02

    Add eligible expenses

    Rent or mortgage interest, utilities, insurance, maintenance.

  3. 03

    See both methods

    Simplified vs regular-method percentage estimate side-by-side.

  4. 04

    Pick the documentation path

    Decide which method to take into your filing process.

Keep going

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Frequently Asked Questions

How should I use this deduction estimate?+
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 qualifies for a home office deduction?+
Self-employed workers and 1099 contractors with a dedicated workspace used regularly and exclusively for business. Eligibility depends on your jurisdiction and work arrangement, so verify the rules before filing.
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 calculates your deduction as your business-use percentage (office sq ft divided by total home sq ft) multiplied by eligible home expenses. Actual tax rules include additional limits and documentation requirements.
Do I qualify for the home office deduction?+
Compare the numbers first, then confirm qualification. Most jurisdictions require the home office to be used regularly and exclusively for business. Review the rules for your situation before filing.
What expenses count toward the regular method?+
Common categories: rent (or mortgage interest), utilities, insurance, internet, and maintenance costs. Treatment varies by jurisdiction, so confirm which costs qualify 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.

Want the invoice, contract, and payment record alongside the deduction?

Browse Gruv's freelancer tools for the records side of the same workflow: invoices, contracts, client status, and month-end history in one account.

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