Yiziphi izinkampani ezikulezi ezine ezinkulu?
I-Big Four yakhiwa iDeloitte, iPricewaterhouseCoopers (PwC), i-Ernst and Young (EY), kanye ne-KPMG. I-Big Four ichazwa ngokuthi amafemu amakhulu ezimali emhlabeni, ngokwemali engenayo. Ngaphandle kwezinsizakalo zokucwaninga, lezi zinkampani zinikeza izinsizakalo zokweluleka ngentela, amasu, nezinye.