Deloitte Clients (Largest Clients 2017) 2017-11-17T03:13:41+00:00

Deloitte Clients

Deloitte’s largest clients are as follows:

  1. Metlife
  2. Morgan Stanley
  3. Berkshire Hathaway
  4. The Blackstone Group
  5. Federal National Mortgage Association
  6. Microsoft
  7. GM
  8. Procter & Gamble
  9. Apollo Global Management
  10. Boeing

More details around Deloitte’s clients is included below.

1. Boeing

Deloitte is the auditor of Boeing. Boeing is an airline manufacturer and a large government contractor. Their market capitalization is about $80 billion.

2. Microsoft

Microsoft is one of Deloitte and Touche’s largest clients. Microsoft is a computer software company, and on of the largest Deloitte clients. Their market capitalization is about $390 billion. They are obviously one of the largest members of the Deloitte client list.

Stay up to date on big 4 news and get a free resume template by signing up for our newsletter.

3. Morgan Stanley

Morgan Stanley is a large investment bank and one of the world’s largest financial institutions. Their market capitalization is $47 billion.

4. Starbucks

Starbucks is a popular retailer of coffee beverages and other food products. They are one of the most prestigious Deloitte clients It’s market capitalization is $80 billion.

5. Sotheby’s

Sotheby’s is a large auction house. It is one of the most well known auctioneers in the world. Its market capitalization is about $1.6 billion.

6. Berkshire Hathaway

Berkshire Hathaway operates to provide property and casualty insurance. Berkshire Hathaway’s market capitalization is worth about $346 billion.

7. UPS

UPS is one of the largest package delivery services in the world. They have a market capitalization of about $97 billion. They had about $58 billion in revenue as of their latest financial statement.

8. Best Buy

Best Buy is one of the largest consumer electronics stores in the world. It has a market capitalization of about $11 billion and revenues of $39 billion as of its latest financial statement.

9. Monsanto

Monsanto is a provides agricultural products for farmer across the globe. They are one of the largest agricultural companies in the world. They have a market capitalization of about $45 billion. Deloitte faced some scrutiny in the Monsanto whistleblower case.

10. Glaxosmithkline

Glaxosmithkline is one of the world’s largest pharmaceutical companies. On December 13, 2016, Glaxosmithkline announced that they will be changing auditors from PwC to Deloitte. They are reportedly the sixth largest audit in the UK. This is a result of new regulations in the UK that require public companies to change auditors every so often.

Did you know the Glaxosmithkline is in the FTSE 100. See how many companies Deloitte audits in the FTSE 100 in our FTSE 100 Auditors List


Deloitte is going to be helping businesses learn how to use Apple for specialized business uses like insurance claim adjusting and retail sales management.

Related: Deloitte and Apple form partnership


Make sure to check out the other big 4 accounting firms client listings:

PwC Clients list

Ernst and Young Clients

KPMG Clients


Deloitte Consulting Client List


Deloitte also provides consulting services in addition to audit services. One of these clients that Deloitte services is IBM. Deloitte has actually partnered with IBM and their Watson Ecosystem. Their are partnering with IBM to figure out how to better utilize the technology.


HP was recently one of the clients of Deloitte Consulting LLP. They helped HP implement Workday. Workday is an HR solution. HP struggled with their large footprint across the globe and maintaining a great HR database, so Deloitte helped them implement Workday

Lundin Petroleum

Deloitte Norway consulted Lundin Petroleum in building its offshore operations organization.

State Grid Corporation of China

The State Grid Corporation of China is the largest utility company in the world and is ranked 7th on the Fortune 500 company listing. Deloitte provided the State Grid Corporation of China with financial due diligence, tax due diligence services, valuation services and negotiation support. Deloitte financial advisory services and Deloitte enterprise risk services were engaged in helping with this work.

To learn about the history of Deloitte, make sure to check out our Deloitte wiki page.

Deloitte has many clients in the Fortune 500, but how do they measure up against those clients. Check out our Deloitte Fortune 500 page to find out.