Note (September 2026): The original version wrongly called Microsoft the oldest company on this list and the most valuable in the USA, said IBM was formed from three companies (it was four) and said Mastercard issues cards itself; it also missed Hewlett-Packard’s 2015 split and Mindtree’s 2022 merger. These points are corrected below.
The top IT companies in the USA on this list are Microsoft, Oracle, Adobe, Salesforce, HP Inc., IBM, Mastercard, Intuit, PayPal and Nvidia. By revenue, Microsoft is the largest ($331.8 billion, fiscal 2026). By market value, Nvidia is the most valuable company in the world as of September 2026. For pure IT services, IBM, Cognizant, Kyndryl and DXC Technology are the main US-headquartered names.
Key Takeaways
- Microsoft had the highest revenue on this list: $331.8 billion in fiscal 2026 (ended June 30, 2026).
- Nvidia, not Microsoft, is the most valuable US company: CompaniesMarketCap listed it first worldwide at about $5.4 trillion in late September 2026.
- Hewlett-Packard split into HP Inc. and Hewlett Packard Enterprise on November 1, 2015; IBM spun off its infrastructure services as Kyndryl on November 4, 2021.
- Several companies on the list (Mastercard, PayPal, Intuit, Nvidia) are product or payments companies, not IT services providers.
- Accenture, the largest IT services firm by revenue in the comparison below, is headquartered in Dublin, Ireland, not the USA.
Every business aspires to succeed with rapid growth, a high ROI (return on investment), and many other things in a short amount of time. One of the more dependable ways to do this is to use IT businesses to help you enter the digital world. IT companies offer a variety of services and products to businesses that can improve their productivity and service offerings, including mobile app development, software development, web development, and many more.
IT Services Companies In USA – List of Top IT Services Companies In USA
It may be difficult to choose the best and most exceptional IT firm among the many technically proficient and well-established ones in the USA. This list of 10 well-known US technology companies was originally based on a ranking published by TopITCompanies.co. It is not a ranking by revenue, and several entries (Mastercard, PayPal, Intuit and Nvidia) are product, payments or chip companies rather than IT services providers; the sections further down add verified revenue figures and the largest pure-play IT services firms.
Microsoft
Microsoft is headquartered in Redmond, Washington. It was founded by Bill Gates and Paul Allen on April 4, 1975, which makes it one of the younger companies on this list: IBM (1911, as CTR) and Hewlett-Packard (1939) are both older.
It specializes in selling computer software. Some of Microsoft’s renowned and widely used products include the Office suite, the Edge browser and the Windows operating systems. Its older Internet Explorer browser has been retired: Internet Explorer 11 support ended for the Windows 10 Semi-Annual Channel on June 15, 2022, and Edge replaced it.
Microsoft offers a wide range of services and is the top IT provider globally. The business also sells technological products such as laptops, smartphones, touchscreen PCs, Xbox gaming systems, server software, and cloud computing. Microsoft sells its products worldwide. It reported revenue of $331.8 billion for fiscal year 2026 (ended June 30, 2026), up 18%, according to its July 29, 2026 earnings release. Microsoft is no longer the most valuable US company: as of late September 2026, CompaniesMarketCap ranked it fourth worldwide by market capitalization, behind Nvidia, Apple and Alphabet.
Oracle Corp
It is regarded as one of the top US IT businesses. The world’s leading provider of database solutions to people is Oracle Corp. Along with computer hardware, the company also sells middleware, enterprise software, and other goods. The company’s main source of growth is international acquisition.
The Oracle group creates information management software for personal computers, workstations, mainframes, and other electronic devices based on digital technology. Oracle Corp., headquartered in Austin, Texas, completed its acquisition of Sun Microsystems in January 2010 and now owns the Solaris operating system, the MySQL open-source database and the widely used Java programming language. In April 2024 Oracle announced plans to move its headquarters to Nashville, Tennessee, without giving a timeframe.
Adobe Inc. (formerly Adobe Systems)
Adobe was founded in December 1982 in Mountain View, California, by John Warnock and Charles Geschke, who left Xerox PARC to develop and sell the PostScript page description language. The company changed its name from Adobe Systems Incorporated to Adobe Inc. in 2018 and is headquartered in San Jose, California. The two worked as computer scientists at a research facility for the Xerox Corporation. In order to precisely determine the size, form, and placement of the computer-generated objects on a page, they created a programming language.
One of Adobe’s most well-known and often-used products is Acrobat Reader. It provides consumers with a variety of services. Adobe services provide a variety of software services and goods that can assist with managing content and media and are compatible with a wide range of hardware and operating systems. As a result, the business is among the top US IT corporations.
Salesforce.com, INC
Salesforce is one of the younger companies on this list: it was founded on March 8, 1999, by Marc Benioff, Parker Harris, Dave Moellenhoff and Frank Dominguez, and is headquartered at Salesforce Tower in San Francisco. The distinction is that Salesforce began working on Digital Transformations-related initiatives much sooner than the other major US IT firms.
It is a company that provides software as a service (SaaS) that specializes in customer relationship management (CRM). The company’s services let organizations use Cloud technology to engage with current and new customers, partners, and clients more effectively.
Businesses can track client behavior and utilize a variety of additional services thanks to it. With the multichannel marketing campaign feature of the Salesforce marketing cloud, direct customer interactions and tracking of customer journeys are both made feasible.
HP Inc. (HPQ), formerly Hewlett-Packard Co.
It’s a global American IT firm that is well-known by the abbreviation HP. The business creates a range of software, hardware, and other associated services for its clients. The corporation primarily targets people in the healthcare, education, and government sectors when marketing its services to medium- and large-sized businesses. People who want to work at HP should check the company’s official careers page for current openings and required skills; no particular third-party course is a route to employment there.
HP used to manufacture a line of electronic test and measurement tools. Later, the business turned its emphasis to producing printers, computers, and laptops under the direction of Bill Hewlett and David Packard. Hewlett-Packard, founded in 1939, grew into one of the best-known US technology companies, but it no longer exists as a single company. On November 1, 2015, it split in two: the PC and printer businesses became HP Inc. (still trading as HPQ, headquartered in Palo Alto, California), and the enterprise business became Hewlett Packard Enterprise. As of 2024, HP Inc. was the world’s second-largest PC vendor by unit sales, after Lenovo.
International Business Machines Corp
IBM is one of the top IT firms in the US as well as one of the top computer manufacturers in the country. The Computing-Tabulating-Recording Company (CTR) was incorporated on June 16, 1911, through the amalgamation of four companies: Bundy Manufacturing Company, Computing Scale Company of America, International Time Recording Company and Tabulating Machine Company. IBM is headquartered in Armonk, New York. The business has a stake in both domestic and international markets.
Thomas J. Watson, who joined CTR in 1914 as general manager, gave the business its current name: CTR became International Business Machines on February 14, 1924. Under his direction, IBM rose to prominence as one of the nation’s top producers of punch card tabulating systems, which are employed by a variety of public and private sector organizations.
Mastercard
The company’s name suggests that it operates in the financial industry. It is a technology company that is in charge of handling electronic payments. The company has partnerships with numerous organizations throughout the world, enabling it to link diverse users in various transactions, including enterprises, merchants, customers, and many more.
The partnerships help Mastercard by enabling it to provide variable card services to its clients, thereby expanding its clientele in both emerging and established areas. Mastercard does not issue cards itself. Banks and credit unions issue Mastercard-branded prepaid, credit and debit cards, and Mastercard runs the network that processes payments between the merchant’s bank and the cardholder’s bank. The company was founded in 1966 and is headquartered in Purchase, New York.
Intuit Corp. (INTU)
Intuit Corp. is listed next among US IT businesses. It is a California-based company that provides financial management and compliance tools to consumers, small business owners, independent contractors, and accounting professionals. Intuit, founded in 1983 by Scott Cook and Tom Proulx and headquartered in Mountain View, California, reports its business in segments covering small businesses, consumers, Credit Karma and professional tax products; check Intuit’s latest annual report for the current segment names. Its best-known products are QuickBooks, TurboTax, Credit Karma (acquired December 2020) and Mailchimp (acquired November 2021). These services are offered in the USA, Canada, and a number of other foreign countries.
Intuit’s small-business services are built around QuickBooks, including the cloud-based QuickBooks Online and desktop versions, plus add-ons such as QuickBooks Commerce for product-based businesses. Intuit changes its product line-up over time, so check its official site for what is currently offered. The business offers Quickbooks Accountants to various businesses so they may process payroll, issue paychecks, etc.
PayPal
The use of the term “pay” in the company’s name makes it obvious that it operates in the financial sector. One of the biggest IT corporations in the US is this one. PayPal Holdings is an American online payments company headquartered in San Jose, California. It began as Confinity in December 1998, took the PayPal name in March 2000, and also owns Venmo.
PayPal, regarded as one of the top American businesses, has users all around the world. It has made conducting international transactions easier and serves as an electronic substitute for paper money. According to Wikipedia, PayPal operates in 202 markets, although the services available differ from country to country.
Nvidia
One of the top US technology firms, Nvidia is a multinational company headquartered in Santa Clara, California. It was founded on April 5, 1993, by Jensen Huang, Chris Malachowsky and Curtis Priem. The business creates graphic processing units. It provides services for the gaming and professional markets as well as systems on chips for the mobile computing and automotive industries.
Nvidia’s growth now comes mainly from data center GPUs used for artificial intelligence, such as the H100, Blackwell and Vera Rubin generations, alongside supercomputer chips for scientific research. Nvidia became the first company to reach a $4 trillion market value on July 10, 2025, and the first to reach $5 trillion on October 29, 2025. Some of Nvidia’s processing units include the Tegra mobile processors and GeForce graphics processing units.
Conclusion
These were a few of the businesses that were included on the list of the top IT companies in the USA. The USA has seen a boom in the number of IT companies, and many of them are now vying to be named among the best in the country. Most of them also rank among the largest technology companies in the world by revenue or market value, although the right choice for any business depends on the service it needs.
These businesses help the nation’s economy and growth by providing employment opportunities for both young and seasoned personnel.
Many of the tiny IT firms in the USA are included on the list of top IT firms in addition to these. India-based IT firms are also active in the US market. Mindtree, which earlier versions of this article named, no longer exists as a separate company: it merged with Larsen & Toubro Infotech in November 2022 to form LTIMindtree, headquartered in Mumbai. JK Technosoft and PixelCrayons are smaller firms; check their current US presence directly before hiring them.
Top 10 IT Companies in the USA at a Glance
The table below gives each company’s founding year, headquarters and latest reported annual revenue and headcount. Figures come from company earnings releases, Wikipedia infoboxes and StockAnalysis, accessed in September 2026. Fiscal years differ from company to company, so the revenue figures do not cover identical periods.
| Company | Founded | Headquarters | Latest annual revenue | Employees | Main business |
|---|---|---|---|---|---|
| Microsoft | 1975 | Redmond, Washington | $331.8B (FY2026, ended June 2026) | 223,000 (2026) | Software, cloud, devices |
| Nvidia | 1993 | Santa Clara, California | $215.9B (FY2026) | 42,000 (FY2026) | GPUs and AI computing |
| IBM | 1911 (as CTR) | Armonk, New York | $67.54B (2025) | 264,300 (2025) | Software, consulting, infrastructure |
| Oracle | 1977 | Austin, Texas (Nashville move announced 2024) | $67.36B (FY2026, ended May 2026) | 141,000 (May 2026) | Database, cloud, enterprise apps |
| HP Inc. | 1939 (as Hewlett-Packard) | Palo Alto, California | $55.29B (FY2025) | c. 55,000 (2025) | PCs and printers |
| Salesforce | 1999 | San Francisco, California | $41.5B (FY2026, ended Jan 31, 2026) | 83,334 (FY2026) | CRM software (SaaS) |
| PayPal | 1998 (as Confinity) | San Jose, California | $33.2B (2025) | 23,800 (2025) | Online payments |
| Mastercard | 1966 | Purchase, New York | $32.8B (2025) | 39,800 (2025) | Payment network |
| Adobe | 1982 | San Jose, California | $23.77B (FY2025) | 31,360 (Nov 2025) | Creative and document software |
| Intuit | 1983 | Mountain View, California | $21.45B (FY2026, ended July 2026) | 18,200 (2025) | Tax, accounting and marketing software |
Oracle’s workforce of 141,000 in May 2026 was roughly 13% lower than the 162,000 it reported a year earlier, according to Wikipedia. For deeper lists by sector, see our guides to the top cloud computing companies in the USA and the top SaaS companies in the USA.
What Is an IT Services Company?
An IT services company is a firm that designs, builds, runs or manages technology for other organizations, usually under contract. Typical services include consulting, software development, cloud migration, managed infrastructure, cybersecurity operations and business process outsourcing.
An IT product company, by contrast, earns most of its money by selling its own software, hardware or platforms. Microsoft, Oracle, Adobe, Salesforce, Intuit and Nvidia are mainly product companies, even though several of them also sell support and consulting. Mastercard and PayPal are payments companies whose businesses run on technology. IBM is the closest to an IT services company on the original list, through its IBM Consulting unit, which had about 160,000 consultants worldwide as of 2024, according to Wikipedia.
Largest Pure-Play IT Services Companies Operating in the USA
Readers looking for IT services providers, rather than the biggest tech brands, will usually be comparing the firms below. Revenue and headcount are the latest figures listed on each company’s Wikipedia page as of September 2026.
| Company | Headquarters | Latest annual revenue | Employees | Notes |
|---|---|---|---|---|
| Accenture | Dublin, Ireland (not US-headquartered) | $69.67B (FY2025) | c. 779,000 (2025) | IT and management consulting in about 120 countries |
| Hewlett Packard Enterprise | Spring (Houston), Texas | $34.3B (FY2025, ended Oct 31, 2025) | 67,000 (2025) | Enterprise IT; completed its Juniper Networks acquisition on July 2, 2025 |
| Cognizant | Teaneck, New Jersey | $21.108B (2025) | 349,800 (Sept 2025) | Founded in Chennai, India, in 1994; IT services and outsourcing |
| Kyndryl | New York City | $15.1B (2025) | c. 73,000 (2025) | Spun off from IBM on November 4, 2021; infrastructure services |
| DXC Technology | Ashburn, Virginia | $13.7B (2024) | 125,000 (2024) | Formed April 3, 2017 from HPE Enterprise Services and Computer Sciences Corporation |
DXC Technology remains a public company on the NYSE; it moved from the S&P 500 to the S&P SmallCap 600 in October 2023. Accenture is included for comparison because it is a major IT services provider in the US market, but it is domiciled in Ireland.
What Has Changed Since This List Was First Published?
- Nvidia overtook Microsoft. Nvidia first became the world’s most valuable company on June 18, 2024, and was the first company to pass $4 trillion (July 10, 2025) and $5 trillion (October 29, 2025).
- Internet Explorer was retired. Support for Internet Explorer 11 on the Windows 10 Semi-Annual Channel ended on June 15, 2022.
- Oracle announced a headquarters move. In April 2024 Oracle said it planned to move from Austin, Texas, to Nashville, Tennessee, without giving a date.
- Salesforce moved into AI agents. Salesforce launched Agentforce in September-October 2024, after buying Slack ($27.7 billion, 2021), Tableau ($15.7 billion, 2019) and MuleSoft ($6.5 billion, 2018).
- Mindtree became LTIMindtree. The merger with Larsen & Toubro Infotech was completed in November 2022.
AI is now the main growth theme across the sector; our list of top AI companies in the USA covers the specialist firms.
How to Choose an IT Services Company
The biggest name is not always the right partner. A small business needs different things from a Fortune 500 company, and many buyers work with regional or mid-size firms rather than the giants listed here.
- Define the job first. Write down whether you need a one-off project (a new app, a cloud migration) or ongoing managed services (help desk, infrastructure, security monitoring).
- Check relevant experience. Ask for case studies and references from clients in your industry and of your size.
- Verify security practices. Ask how the firm handles access to your systems and data, and which security standards it follows; see our guide to the top cybersecurity companies in the USA for specialist providers.
- Compare pricing models. Fixed-price, time-and-materials and monthly retainer contracts suit different kinds of work; get at least two written quotes.
- Read the contract. Look for clear service-level agreements, ownership of code and data, and exit terms.
For software projects in particular, our guide to choosing the right software development company walks through the questions to ask, and our list of top software development companies in the USA names more specialist firms.
Frequently Asked Questions
What is the largest IT company in the USA?
Microsoft is the largest IT company on this list by revenue, with $331.8 billion in fiscal 2026. Nvidia is the largest by market value: CompaniesMarketCap listed it as the world’s most valuable company, at about $5.4 trillion, in late September 2026.
Which is the biggest IT services company in the USA?
Among US-headquartered firms with large IT services businesses, IBM is the biggest, with $67.54 billion revenue in 2025 across consulting, software and infrastructure. Cognizant ($21.1 billion, 2025), Kyndryl ($15.1 billion, 2025) and DXC Technology ($13.7 billion, 2024) follow. Accenture is larger but headquartered in Ireland.
Is Hewlett-Packard still one company?
No. Hewlett-Packard split on November 1, 2015, into HP Inc., which sells PCs and printers and trades as HPQ, and Hewlett Packard Enterprise, which sells enterprise IT and is headquartered in Spring, in the Houston area of Texas.
Where is Oracle headquartered?
Oracle is headquartered in Austin, Texas, having moved from Redwood Shores, California. In April 2024 Oracle announced plans to move its headquarters to Nashville, Tennessee, but gave no timeframe.
Is Mastercard an IT company?
Mastercard is a payments technology company. It runs the network that processes card payments between banks, but it does not issue cards itself; banks and credit unions issue Mastercard-branded cards.
What does an IT services company do?
An IT services company builds, runs or manages technology for other organizations. Common services include consulting, custom software development, cloud migration, managed infrastructure, cybersecurity and outsourcing.
