Cybercab and Taxi Fleets: Why Robotaxi Operators Will Still Need Mileage Records

General information, not tax or legal advice. Talk to your tax preparer about your situation.

Taxi cars need mileage records because vehicle deductions rest on records of each car's miles, dates, places and business purpose (IRS Pub 463). That stays true when no one is driving. As of October 2026, individuals can't buy or operate a Cybercab, so this is a guide for future fleet operators, not current owners.

Where things stand in October 2026

Tesla's Cybercab FAQ says Cybercab rides are available only in limited areas of Austin, Texas, on Tesla's own Robotaxi service. There is no consumer order page. Tesla lists a form for commercial purchase inquiries, with no published delivery dates or terms. In practice, an individual can't buy a Cybercab or run one as a taxi today.

Driverless taxis are still being discussed as a business, and the tax rules for taxi fleets already exist. They are worth knowing before anyone signs a fleet agreement.

Why taxis need mileage records

Chapter 5 of IRS Publication 463 says that for business use of a car you need records of the mileage for each business use, the total miles for the year, the date, the destination and the business purpose. Cars are also "listed property". IRS Publication 946 explains that depreciation on listed property depends on the share of use that is business use, which has to be supported.

None of this depends on who sits behind the wheel. A driverless car still has paid trips, empty trips to the next pickup, trips to a charger or depot, and maintenance runs. An operator needs a record that covers all of them.

What a future fleet operator would need to log, per car

Date and time of each trip.
Start and end points, or the service area.
Miles, ideally from start and end odometer readings (Pub 463, Table 5-2 has odometer columns).
Purpose: paid trip, driving to a pickup, repositioning, charging, depot, maintenance, or personal.
Year totals: total, business and personal miles, which Form 4562, Part V asks for.
The network operator's trip and payout statements, kept with the log.

The fleet rule: five or more cars and the standard mileage rate

IRS Topic 510 says you can't use the standard mileage rate if you operate five or more cars at the same time, as in a fleet operation, or if you've used MACRS depreciation, claimed a Section 179 deduction, or claimed the special depreciation allowance on that car. A larger taxi fleet would generally use actual expenses: electricity, insurance, repairs, tires, registration and depreciation, split by business-use percentage. Either way, the mileage records hold the numbers together.

For reference, the 2026 business rate is 72.5¢ per mile for January 1 to June 30 (IR-2025-128 / Notice 2026-10) and 76¢ per mile for July 1 to December 31 (IR-2026-29 / Announcement 2026-11), per the IRS standard mileage rates page. Rules for using it are in Pub 463.

Depreciation basics from Pub 946

Most cars placed in service after 1986 are depreciated under MACRS (Topic 510; Pub 946).
Listed property used 50% or less for business doesn't qualify for the Section 179 deduction or the special depreciation allowance, and has to use the alternative depreciation system (Pub 946).
If business use later drops to 50% or less, some earlier depreciation may have to be recaptured (Pub 946).
Depreciation starts when the car is placed in service, meaning ready and available for its business use. A deposit or an inquiry is not that (Pub 946).

Passenger-automobile limits and the "for hire" exception

Pub 463 and Pub 946 describe yearly caps on depreciation for passenger automobiles. They also describe exceptions for vehicles used directly in the business of transporting people or property for pay, such as taxis. Whether an owner whose car is dispatched through someone else's network is directly in that business is a fact-specific question for a tax preparer.

Questions a future operator should bring to a preparer

How many cars would I operate at the same time, and does the five-car rule apply?
Would the "for hire" exception apply to a network-dispatched car?
When would each car be placed in service?
Which trips count as business: repositioning, charging, depot returns?
What records do you want each month from me and from the network operator?

Frequently asked questions

Can I buy a Cybercab and run it as a taxi?

Not as of October 2026. Tesla lists only a commercial purchase inquiry form, and Cybercab rides run on Tesla's own service in limited areas of Austin (Tesla Cybercab FAQ).

Why do taxis need mileage records?

The IRS asks for records of business miles, total miles, dates, places and purpose for business use of a car (Pub 463). Depreciation depends on business-use percentage (Pub 946).

Do driverless cars need a mileage log?

The IRS record rules for business use of a car don't depend on who is driving.

Can a taxi fleet use the standard mileage rate?

Not if it operates five or more cars at the same time (IRS Topic 510).

Does paying a deposit start depreciation?

No. Depreciation starts when the car is placed in service (Pub 946).

This article is general information, not tax or legal advice. Talk to your tax preparer about your situation.

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