California (CA) Mileage Deduction Calculator
Tax year: 2026 · Figures for Tax Year 2026 · Source: IRS
Built and audited by the CalcSumly Engineering Team using official IRS and State Department of Revenue data.
Total miles driven for business purposes during the year (not commuting).
Total annual miles on this vehicle (business + personal). Used for the actual method only.
Gas, insurance, repairs, and lease or depreciation for the full year. Used for the actual method only.
Your Schedule C net profit before the mileage deduction.
Standard method
Recommended$8,700
72.5¢/mi × 12,000 mi · 2026
Actual method
$4,800
60.0% business use × vehicle costs · 2026
At 12,000 business miles and $80,000 net profit in California, the standard mileage method saves about $3,631 in taxes.
How the mileage deduction works in California for 2026
The mileage deduction is taken on Schedule C under IRC §162. For 2026, the IRS standard rate is 72.5 cents per mile (IRS Notice 2026-10). Alternatively, you can deduct the business-use percentage of your actual vehicle costs.
Federal savings cascade: The deduction reduces Schedule C net profit, which lowers SE tax (15.3% on 92.35% of net profit). The reduced SE tax also lowers the deductible half of SE tax, which further reduces federal AGI and federal income tax.
California taxes federal AGI minus the California standard deduction. The mileage deduction reduces your Schedule C net profit, which reduces federal AGI and therefore reduces California taxable income at your marginal California rate.
Which method saves more?
The standard method wins when 72.5 cents per mile exceeds your actual cost per mile (common with fuel-efficient or low-cost vehicles and high business mileage). The actual method wins when your real vehicle costs per business mile exceed 72.5 cents (common with trucks, luxury vehicles, or high-cost leases with relatively few business miles).
Recordkeeping requirement
The IRS requires a contemporaneous mileage log with the date, destination, business purpose, and miles for each trip. Commuting miles from home to a regular office are not deductible. Keep receipts for all vehicle costs if you use the actual method.
Scope and limitations
This calculator models a single Schedule C business owner. It does not include Section 179 deduction, MACRS depreciation, or bonus depreciation. Local county or city income taxes are not included. Consult a tax professional before filing.
Sources
- IRS Notice 2026-10 — Standard Mileage Rate 72.5 Cents Per Mile
- IRS Publication 463 — Travel, Gift, and Car Expenses
- IRS Rev. Proc. 2025-32 — 2026 Standard Deduction Amounts
- California FTB — 2025 Form 540 Tax Rate Schedules (X, Y1, Y2, Z)
- California EDD — 2026 Withholding Schedules Method B (DE 44)
- Tax Foundation — California Income Tax Rates 2026
Frequently asked questions
What is the mileage deduction for freelancers?+
Freelancers and self-employed people can deduct business driving costs on Schedule C under IRC §162. The 2026 IRS standard mileage rate is 72.5 cents per mile (IRS Notice 2026-10). Alternatively, you can deduct a business-use percentage of your actual vehicle costs. The deduction reduces your Schedule C net profit, which lowers SE tax, federal income tax, and most state income taxes.
Does the mileage deduction reduce self-employment tax?+
Yes. The mileage deduction is a Schedule C deduction, which reduces net profit before SE tax is calculated. SE tax is 15.3% on 92.35% of net profit. A $7,250 deduction (10,000 miles at the standard rate) saves roughly $1,024 in SE tax in addition to federal and state income tax savings.
What records are required for the mileage deduction?+
The IRS requires a contemporaneous mileage log recording the date, destination, business purpose, and miles for each business trip. Commuting miles to a regular office are not deductible. Apps, spreadsheets, or a paper logbook all satisfy the requirement as long as they are maintained at or near the time of each trip.
Does California follow the federal mileage deduction?+
Yes. California conforms to federal Schedule C treatment for vehicle expenses. Both the standard mileage rate (72.5 cents per mile for 2026) and the actual expense method reduce your California AGI and California taxable income. California uses a graduated rate schedule with a top rate of 13.3%, so the mileage deduction is especially valuable for higher-income freelancers.
What California income tax rate applies to mileage savings?+
California has nine income tax brackets from 1% to 12.3%, plus a 1% Mental Health Services surtax above $1,000,000. For most self-employed people earning $60,000 to $120,000 in net profit, the marginal California rate is 9.3%. California taxable income is federal AGI minus the California standard deduction ($5,706 single / $11,412 MFJ for 2026).
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