See both the simplified ($5/sq ft) and regular (actual expenses) deduction amounts with a clear recommendation.
Home Office
Home office deduction calculator that compares simplified vs regular method.
Enter your office square footage, home size, and housing expenses to compare the simplified method ($5/sq ft) against the regular method (actual expenses). See which approach gives you the larger deduction.
Direct answerThe simplified home office deduction is $5 per square foot up to 300 sq ft ($1,500 max). The regular method multiplies your business-use percentage (office sq ft divided by home sq ft) by actual housing expenses like rent, mortgage interest, utilities, and insurance. This calculator compares both methods to find the larger deduction.
Browser-first workflowSimplified vs regular comparisonBusiness-use % auto-calculated
1. Enter your details
CalculatorEnter your office and home square footage, then your annual housing expenses to compare the simplified and regular home office deduction methods.
Enter your home office details or load a sample scenario to compare deduction methods.
Live Tool
Home Office Deduction Calculator in the browser
Enter your home office details and expenses to compare deduction methods.
Privacy-first workflow
This page runs in the browser. No financial data is sent to any server.
What this home office calculator solves
The home office deduction has two methods with very different results. Most self-employed workers choose the simplified method for convenience without realizing the regular method could save them significantly more.
Automatically calculates your business-use percentage from office and home square footage.
Many home offices produce a regular-method deduction far exceeding the $1,500 simplified cap.
Key signals
Simplified deduction, regular method deduction, business-use percentage, and recommended method.
Decision support
Method comparison, expense allocation breakdown, and record-keeping trade-off analysis.
Detailed breakdown
Itemized housing expenses, business-use allocation, and simplified method calculation.
Calculates both methods side by side so you can choose the approach that produces the larger home office deduction.
Derives your business-use percentage from office square footage and total home square footage automatically.
Shows exactly how much of each housing expense (rent, mortgage, utilities, insurance) is allocated to the home office.
Factors in home depreciation under the regular method, which is often overlooked but can be a significant component.
Guide Below The Tool
How to use the home office deduction calculator effectively
Key concepts, practical steps, and guidance for maximizing your home office deduction.
A home office deduction calculator compares the two IRS-approved methods for deducting home office expenses: the simplified method ($5 per square foot, up to $1,500) and the regular method (actual home expenses multiplied by business-use percentage). It shows which method produces the larger deduction for your specific home and office setup.
Self-employed individuals, freelancers, independent contractors, and sole proprietors who work from a dedicated home office space. Tax professionals preparing Schedule C for clients with home offices also benefit from quick method comparisons.
Office square footage relative to total home size determines your business-use percentage. Total housing expenses determine the regular method deduction. If the regular method deduction exceeds $1,500, the extra record-keeping effort pays off. The only way to know is to calculate both.
Workflow
Four practical steps
Use this calculator to decide which method to use before tax filing, and to quantify the benefit of maintaining a qualifying home office.
1
Measure your office and home.Measure the dedicated office area in square feet. Then determine the total square footage of your home. The ratio is your business-use percentage.
2
Gather annual housing expenses.Collect totals for rent or mortgage interest, property taxes, utilities, homeowner's insurance, repairs, and home depreciation.
3
Compare both method results.The calculator shows the simplified deduction and the regular method deduction. Choose whichever is larger.
4
Decide on record-keeping approach.If the regular method is only slightly larger, the simplified method may be worth the convenience. If it is significantly larger, the record-keeping effort is justified.
Review Checklist
What to validate first
Key assumptions that affect your home office deduction calculation.
The space must be used exclusively and regularly for business. A multi-purpose room does not qualify unless you can identify a specific, dedicated area.
Measure your office space carefully. The business-use percentage is the foundation of the regular method calculation and affects every expense allocation.
Renters deduct a portion of rent. Homeowners deduct a portion of mortgage interest (not principal), property taxes, and home depreciation. These are different calculations.
Expenses that benefit only the office (painting the office) are 100% deductible. Expenses that benefit the whole home (utilities) are deducted at the business-use percentage.
If you claim home depreciation under the regular method and later sell your home, you may owe depreciation recapture tax. Factor this into your decision.
The home office deduction under the regular method cannot exceed your business net income. Unused deduction can carry forward to future years.
Why This Page Exists
Built to help self-employed workers claim the full home office deduction they deserve
The simplified method is easy but often leaves money on the table. This calculator shows whether the regular method is worth the extra effort.
See both simplified and regular deductions side by side without manual calculations or spreadsheets.
Many self-employed workers leave thousands on the table by defaulting to the simplified method. This calculator reveals the gap.
Ledger Summit can build client-facing home office tools for accounting practices. This page delivers value right now.
FAQ
Home office deduction questions, answered directly
Short answers for searchers and answer engines.
The IRS offers the simplified method ($5 per square foot up to 300 sq ft, max $1,500) and the regular method (actual expenses multiplied by business-use percentage). The regular method requires more record-keeping but often produces a larger deduction.
The simplified method allows a deduction of $5 per square foot of home office space, up to 300 square feet ($1,500 maximum). No tracking of actual expenses is required. You can still deduct mortgage interest and property taxes as itemized deductions separately.
You qualify if you use a specific area of your home exclusively and regularly as your principal place of business. Self-employed individuals and independent contractors are eligible. The space must be used exclusively for business.
No. Since the Tax Cuts and Jobs Act of 2017, W-2 employees cannot take the home office deduction on their federal tax return, even if they work from home full-time. The deduction is only available to self-employed individuals filing Schedule C.
The maximum simplified method deduction is $1,500 per year, calculated as $5 per square foot for up to 300 square feet. If your office is under 300 sq ft, the deduction is proportionally less. Larger offices may benefit more from the regular method.
Next Step
Need home office deduction tools for your accounting practice?
Use the free calculator for personal home office planning. If you need client-facing home office deduction tools, Ledger Summit can build the next layer.
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