How much do EY & PwC pay compared to Deloitte & KPMG?

For entry-level positions, EY and PwC pay roughly the same and about 10% more than Deloitte and KPMG. All firms pay similar bonuses on top of the base salaries offered.

Who is a co-ordinating entity for Deloitte & PwC & Ernst & Young?

For Deloitte, PwC and Ernst & Young, the co-ordinating entity is a UK limited company. Those entities do not themselves perform external professional services, nor do they own or control the member firms.

Is Deloitte better than PwC?

In summary, there is little difference between the big four firms but if you want to focus on digital consulting work then Deloitte may be the best choice for you, for tax it is probably PwC and for audit, there is probably negligible difference and so the 10% higher salary at EY and PwC is probably the deciding factor.

What exactly do PwC KPMG and Ernst & Young do?

ELI5: what exactly do PWC, KPMG, Deloitte, Ernst & Young etc actually do? The core of their business is accounting. Accounting refers to the practice of business keeping 'accounts'; i.e., records of their business.