Regional network of accounting firms MGI North America is an accounting network of independent accounting firms, audit firms ... and tax firms in the USA and Canada. Part of MGI Worldwide, a Top 15 international accounting association. Throughout MGI in North America and MGI worldwide, some 5,000 independent audit firms, tax advisory firms, CPAs and accounting firms come together to network and share expertise on the latest accounting principles, helping them win, retain and grow business. read more