Tesla Makes Its Money Selling Cars. It Is Spending That Money on Robotaxis, Robots and Chips.

In one line: Tesla earns most of its gross profit by selling cars and is spending a growing share of that profit on research into self-driving cars, Optimus robots and the AI chips that run both. Watch the automotive gross margin alongside deliveries, and compare research and development spending with gross profit.

At a glance

• Latest: in July–September 2026, Tesla's automotive gross margin (the share of car revenue left after the cost of building the cars) was 18.5%, against 17.0% a year earlier. Gross profit rose $0.44 billion from a year earlier, while research and development spending rose $1.13 billion
• Biggest risk: cheaper rivals in China and elsewhere may force Tesla to cut car prices. Robotaxi income may also arrive later than the money Tesla is spending on robotaxis
• Reports: Quarterly. Next results: see Earnings Dates.

On October 21, 2026, Tesla reported revenue of $28.0 billion for July–September 2026, about the same as a year earlier. Tesla delivered 486,532 vehicles, 2% fewer than a year earlier. Car and energy revenue fell, while revenue from services such as charging, repairs and used cars grew 33%.

Tesla's gross profit rose $0.44 billion from a year earlier to $5.49 billion. Tesla's operating income fell to $718 million from $1.62 billion. The operating margin fell to 2.6% from 5.8%.

Operating expenses rose $1.35 billion. Most of the rise was in research and development (R&D), which grew 69% to $2.76 billion. Selling, general and administrative costs rose $0.45 billion. A year earlier, Tesla also had $0.24 billion of restructuring costs. These did not recur, which held down the rise in operating expenses. Vaibhav Taneja is Tesla's finance chief. He said "most of the increase came from significant research and development-related activities." He named AI development, chip development and the cost of preparing to build Megapack 3 batteries, the Semi truck and Optimus, the humanoid robot Tesla is developing.

What it sells vs. what it earns on

Table 1 — Tesla's revenue and gross profit, July–September 2026

Car sales include FSD revenue. Regulatory credits are sold to other carmakers. The regulatory credits figure is after a $475 million reversal in July–September. Services and other includes paid charging, repairs, used cars and insurance. Figures may not add up because of rounding. Source: Tesla Q3 2026 update.

Tesla designs and builds electric cars in factories in California, Texas, Shanghai and Berlin. Most are the Model 3 sedan and the Model Y SUV. In July–September 2026, the automotive business brought in $20.6 billion. That was 73% of Tesla's revenue. Tesla also sells Megapack and Powerwall batteries that store electricity. Tesla deployed 13.7 gigawatt-hours (GWh) of these batteries in July–September 2026, and the energy business brought in $2.88 billion of revenue.

Tesla can earn on a car in two ways. One is the gap between what the buyer pays and what the car costs to build. The other is software the owner pays for on top of the car. Tesla's driver-assistance software is called Full Self-Driving (Supervised), or FSD. In the US, Tesla stopped selling FSD for a one-time price after February 14, 2026, except in a package on its most expensive models. FSD is sold there mainly as a monthly subscription, at $99 a month when the change was announced.

Tesla counted 1.74 million active FSD users at the end of September 2026, against 1.04 million a year earlier. These are owners around the world who have paid for FSD, up front or monthly. Tesla calls the count "active FSD subscriptions." Taneja said about half of the 1.74 million pay monthly.

Tesla is also building a new business: Robotaxi, a ride-hailing service meant to run with no Tesla employee in the car. Some rides still carry a Tesla employee. In the San Francisco Bay Area, for example, a safety driver sits at the wheel. In October 2026, Tesla said it ran Robotaxi in six US cities. Outside Austin, Robotaxi uses Model Y cars. In Austin, Tesla began adding the Cybercab on September 3, 2026. Tesla built the Cybercab for the service. The Cybercab has two seats and no steering wheel or pedals. Tesla does not report Robotaxi revenue separately.

Tesla earns regulatory credits by selling cars with no exhaust emissions. Other carmakers have bought these credits from Tesla to meet emissions and fuel-economy rules. A 2025 US law cut the penalty for missing the US fuel-economy standard to zero, so carmakers no longer need US fuel-economy credits to avoid a penalty. Tesla still sells some credits. Some go under multi-year contracts signed earlier. Others go to carmakers in Europe, such as Ford and Honda, that count Tesla's cars in their fleet average to meet EU carbon-dioxide limits.

In January–September 2025, Tesla's credit revenue was $1.45 billion. That was equal to 49% of Tesla's operating income of $2.95 billion. Selling credits adds almost no cost, so most of that revenue reaches operating income. In January–September 2026, credit revenue fell to $0.64 billion. That figure is after a $475 million reversal in July–September, when carmakers returned credits they had bought earlier, under the terms of their contracts. Before the reversal, credit revenue was about $1.11 billion, 23% less than a year earlier. Tesla did not say why the carmakers returned the credits.

Compared with a year earlier, automotive gross profit rose $191 million even though credit revenue fell $304 million. Tesla did not explain the rise in automotive gross profit directly. Among the reasons Tesla gave for the change in operating income, the ones in the car business were a better mix of models and regions and more FSD subscriptions, partly offset by lower average car prices. Services and other, which Tesla reports apart from automotive revenue, added $1.13 billion of revenue and $368 million of gross profit.

Energy revenue fell $534 million, and the energy gross margin was 33.1%. Both figures are affected by tariff refunds. Tesla got back $526 million of US tariffs it had paid, which lowered its energy costs. Tesla also owed $339 million of tariff-related refunds to some storage customers under their contracts, and took that amount off energy revenue. Without the tariff refunds, the energy gross margin would have been about 24%, against 31.4% a year earlier.

What moves the profit

Operating income ≈ Automotive gross profit + Energy gross profit + Services and other gross profit − Research and development − Selling, general and administrative

• Automotive gross profit. Deliveries × (Price per car − Cost per car), plus FSD, regulatory credits and leasing.
• Deliveries. Cars handed to customers. Reported every quarter, a few days after the quarter ends.
• Price and cost per car. The price is what each buyer pays for the car after discounts, not counting FSD. The cost is what each car costs to build, including the batteries. Not disclosed. The automotive gross margin excluding regulatory credits comes closest to showing the gap between price and cost.
• FSD revenue. Monthly subscriptions and up-front purchases, recorded in car sales. Not disclosed. Tesla reports the number of active FSD users.
• Regulatory credits. Credits sold to other carmakers. Reported every quarter.
• Energy storage. Megapack and Powerwall batteries. Tesla reports GWh deployed and the revenue and gross profit of the energy business.
• Research and development. AI, chips, Robotaxi, Optimus and new vehicles. Reported every quarter for the whole company.
• Selling, general and administrative. Stores, sales staff and head-office costs. Reported every quarter.

Reading the earnings: what to watch, and how

Tesla's quarterly update, quarterly report (Form 10-Q) and earnings call are all at ir.tesla.com.

• Automotive gross margin excluding regulatory credits, against deliveries. Read it: a rising margin means Tesla is keeping more from each car after the cost of building it. If deliveries fall at the same time, Tesla is earning more on each car but selling fewer cars. Latest: 18.1% in July–September 2026, against 15.4% a year earlier. Deliveries were 2% lower than a year earlier.
• Active FSD users. Read it: each active user is an owner who has paid for FSD, up front or monthly. A rising count shows more owners paying for software on top of the car. Latest: 1.74 million at the end of September 2026, against 1.04 million a year earlier.
• R&D, against gross profit. Read it: when R&D rises by more dollars than gross profit, operating income falls. Operating income can recover if Robotaxi, Optimus and the other new businesses bring in more gross profit than they add to costs. Latest: in July–September 2026, R&D rose $1.13 billion from a year earlier and gross profit $0.44 billion. The operating margin was 2.6%, against 5.8% a year earlier.
• Capital spending, against cash from operations. Read it: if capital spending rises by more dollars than cash from operations, Tesla has less cash left after building. Equipment used for research, such as AI computers, counts as capital spending when bought, and its cost reaches R&D over several years as depreciation. Latest: in July–September 2026, capital spending was $4.73 billion, against $2.25 billion a year earlier. Cash from operations was $6.26 billion, against $6.24 billion, so free cash flow fell to $1.53 billion from $3.99 billion.
• Energy storage deployed and its gross margin. Read it: revenue divided by GWh roughly shows the price Tesla gets for its batteries. If GWh rises while revenue falls, prices are usually falling, and the margin shows whether costs are falling faster. Latest: in July–September 2026, Tesla deployed 13.7 GWh, and the energy business brought in $2.88 billion of revenue (after $339 million of refunds to customers), against 12.5 GWh and $3.42 billion a year earlier. The energy gross margin rose to 33.1% from 31.4%, but only because of the tariff refunds Tesla received.

Leading indicators (outside Tesla's filings)

• Tesla's Shanghai shipments. Cars shipped wholesale from Tesla's Shanghai factory for sale in China and for export. These shipments are an early monthly read on demand for the cars that factory builds. (deliveries and price per car)
  • When: monthly, in the first two weeks of the next month. Where: the China Passenger Car Association (CPCA).
  • Latest: 95,366 in September 2026, up 5% from a year earlier. That month, Tesla cut prices on cars in stock in China by 5,000 yuan for the Model 3 and 10,000 yuan for the Model Y.
• Robotaxi cities, unsupervised miles and permits. Unsupervised miles are miles driven with no Tesla employee on board. New cities and more unsupervised miles show Robotaxi growing before Tesla reports any Robotaxi revenue. Driverless permits decide where Robotaxi can run. (Robotaxi)
  • When: as announced. Where: Tesla's posts and its Robotaxi app; the California DMV and Public Utilities Commission; the National Highway Traffic Safety Administration (NHTSA), the US vehicle-safety regulator.
  • Latest: Tesla said cumulative unsupervised miles reached nearly two million by the end of September 2026, eight times the level three months earlier. Its Robotaxi safety report put them at about 3.1 million by October 18. In September 2026, NHTSA opened an investigation into how Tesla certified that about 1,000 Cybercabs meet federal safety standards.

What Wall Street is asking

Tesla held four earnings calls from January to October 2026. Analysts and executives kept returning to a few questions. The answers below are the latest, from October 2026.

1. "When will Robotaxi bring in meaningful revenue and profit?" In October, Taneja repeated the view of Elon Musk, the chief executive, that Robotaxi "would become a significant part of our revenue and profitability in '27." Tesla aims to run Robotaxi at a cost of $0.30 a mile. Asked whether Robotaxi had reached that target, Taneja said, "No." Ashok Elluswamy leads Tesla's AI software. He said technology, not regulation, was what limited Robotaxi's expansion at the time. He said the limit would "pretty quickly become regulatory," in the first half of 2027.
2. "How many owners will pay for FSD?" In October, Taneja said more than 75% of North American deliveries in July–September 2026 included a sign-up for a paid FSD subscription at the time of delivery. Taneja added that every car Tesla delivers in North America comes with a free month of FSD. A sign-up at delivery is not yet a payment.
3. "How much will Tesla spend on factories and chips, and how will Tesla pay for that spending?" In October, Taneja said Tesla expected capital spending of about $20 billion for 2026 and had secured "capacity to borrow up to $30 billion." He said Tesla did not plan to borrow under the new loan agreements in 2026. Terafab is Tesla's planned chip factory. Musk said spending on it was "certainly in the tens of billions."
4. "When will Optimus robots be ready to sell?" In October, Musk named the problems still to solve as "the AI, the electromechanical design and the reliability and duration." He expected them "to be solved around the end of next year," meaning 2027.

A note on valuation

On October 22, 2026, the day after the results, Tesla's shares fell 3.1%. On October 26, they closed at $391.62. That gave Tesla a market value of about $1.55 trillion. Tesla had $9.5 billion of debt and finance leases and $45.4 billion of cash and short-term investments, so its enterprise value was about $1.51 trillion.

Tesla's operating income for the 12 months from October 2025 to September 2026 was $3.47 billion, down from $4.53 billion a year earlier. Tesla's enterprise value was more than 400 times that operating income. Tesla's share price was about 430 times its earnings per share for the same 12 months. Toyota's share price was about 9 times its earnings for the past 12 months.

Toyota's group sold about 11.3 million vehicles in 2025, including its Daihatsu and Hino brands. That was almost seven times Tesla's 1.64 million deliveries in 2025. On October 26, Toyota's market value was about $0.23 trillion, about a seventh of Tesla's.

The bottom line

Cars still earn most of Tesla's gross profit, and more of it is going into research on Robotaxi, Optimus and AI chips. In July–September 2026, that spending rose more than gross profit. Software owners pay for on top of the car is growing, but Tesla does not report the revenue.

Can software turn a car sold once into income paid every month? In Earnings Driver, the EV chapter shows why carmakers are chasing a second income from software.

Sources: Tesla Q3 2026 update (October 21, 2026) and Form 10-Q for the quarter ended September 30, 2026; Tesla Q2 2026 Form 10-Q; Tesla Q3 2025 update (October 22, 2025); Tesla earnings calls of January 28, April 22, July 22 and October 21, 2026; China Passenger Car Association (October 9, 2026); Gasgoo (September 9, 2026); Electrek on regulatory credits as nearly pure profit (October 21, 2026); Tesla Robotaxi safety report (October 21, 2026); mgrid.org on energy tariff refunds (October 23, 2026); NHTSA investigation of the Cybercab (September 2026); Toyota 2025 global sales (January 29, 2026); Tesla Q4 2024 update; MarketBeat (Toyota price-to-earnings, October 26, 2026); Toyota investor relations (shares outstanding after the May 2026 tender offer); share prices as of October 22 and October 26, 2026.

For sources that work for any company — filings, earnings calendars, consensus estimates — see Where to find the numbers.

Educational only, not investment advice. Figures as of the periods noted.