Free Calculator · 50 States

Home Office Tax Deduction Calculator

Federal Form 8829 mechanics layered with state-by-state conformity quirks. For self-employed, freelancers, and the few W-2 cases where state law (CA, NY, PA, MA) still permits the deduction federal TCJA disallowed.

50 states Federal Form 8829 State conformity 2026 tax year
1
Your home office
The IRS allows the simplified ($5/sq ft, capped 300 sq ft, max $1,500) OR actual-expense method
Simplified is faster; actual is usually larger above ~$1,500 in qualifying expenses.
3
Your tax bracket
Federal marginal rate; state pulled from your selection above
Home office deduction also reduces your SE tax base by 15.3% on the deductible portion. Auto-calculated below for SE filers.
Estimated annual tax savings
$0
Federal + state combined value of the deduction
Deduction amount
$0
Reduces taxable income
Federal savings
$0
At your bracket
State savings
$0
At state marginal rate
Deduction math
ComponentValue

Pair this with a tax pro for the gray areas

Home office gets audited at higher rates. The deduction is legitimate; the documentation has to be tight. State conformity adds complexity (CA, NY, PA all have quirks worth a 30-minute pro consult).

Best tax software for self-employed (CeoCult)
Sister-site comparison of TurboTax / FreeTaxUSA / Cash App Tax / TaxSlayer Self-Employed.
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Full remote-work tax guide
Beyond home office: equipment, internet, conferences, mileage. The full deductible-expense map for remote workers.
Read guide →

How this works

Simplified method: $5/sq ft × min(office sq ft, 300) = deduction (capped $1,500). Actual method: (office sq ft ÷ total sq ft) × indirect expenses + 100% of direct office expenses. Federal savings = deduction × marginal bracket. State savings = deduction × state marginal rate (where state has income tax + conforms to federal AGI starting point). Self-employed filers also save 15.3% SE tax on the actual-method portion attributable to net business income.

State data sourced from each state's Department of Revenue + Tax Foundation 2026 marginal-rate report. Verified 2026-05-02. NOT tax advice; consult a CPA. Companion piece: CeoCult's per-state home office pages drill into state-specific forms and quirks.