The three tiers in one minute
Big 4
Deloitte, PwC, EY, and KPMG are the four largest firms in the world. They audit the largest public companies and run huge tax, advisory, and consulting practices. By U.S. revenue, INSIDE Public Accounting's 2025 ranking puts Deloitte around $33 billion, PwC around $24.3 billion, EY around $24.2 billion, and KPMG around $15.2 billion.
- Clients: large public and multinational companies
- Brand: globally recognized on any resume
- Trade-off: narrow slice of very large engagements, long hours
Mid-tier and national firms
Below the Big 4 sits a strong group of national and large regional firms, including RSM, Baker Tilly, BDO USA, Grant Thornton, CBIZ, Forvis Mazars, CliftonLarsonAllen, and others. INSIDE Public Accounting reports RSM at roughly $4 billion in U.S. revenue, with several peers in the $2 billion to $3.4 billion range. They serve the middle market and some public companies.
- Clients: mid-sized companies, some public, many private
- Brand: strong, especially regionally and in the middle market
- Trade-off: a bit less global reach, often more responsibility sooner
Local and regional firms
Local firms range from a few people to a few hundred. They serve private businesses, families, nonprofits, and local governments in one city or region. You will likely own whole engagements early and sit close to the partner and the client.
- Clients: private businesses, individuals, nonprofits, local government
- Brand: respected locally; less national name recognition
- Trade-off: broad hands-on experience, usually better balance
Pay: real differences, but smaller than people think
Salary varies far more by city, group, and year than by tier alone, so treat the numbers below as illustrative ranges from public salary guides rather than promises.
Starting pay
Industry salary guides generally show Big 4 first-year audit roles starting in the mid-to-high $50,000s to mid-$60,000s, with tax a notch higher and advisory or consulting higher still. Mid-tier starting pay often runs from the high $40,000s into the $60,000s. Local firms vary widely and sometimes start lower, but a lower cost of living and faster raises can close the gap.
- Big 4: highest starting base, biggest range across service lines
- Mid-tier: competitive, often within a few thousand dollars of Big 4
- Local: most variable, sometimes offset by lower cost of living
What actually drives lifetime pay
Early base salary is the least important number. Raises, promotions, bonuses, the value of your CPA license, and where you go next matter far more. A motivated accountant who earns the CPA and builds a specialty can out-earn a peer who simply chose a bigger logo. According to the Bureau of Labor Statistics, the median wage for accountants and auditors was $81,680 in May 2024, and demand remains strong.
- CPA license: a durable raise and a hiring filter
- Specialty: tax niches, technical accounting, IT audit, valuation
- Exit move: industry, advisory, or leadership roles reset your pay
Hours, the work, and the clients
Hours and work-life balance
Big 4 roles are known for long hours, especially in busy season, when nights and weekends are common. Mid-tier firms tend to be a little lighter, and many local firms offer the most balance, though every firm has a busy season. The honest version is that hours depend more on your specific office, service line, and team than on the tier on the door.
The work itself
At the Big 4 you often work a focused slice of a very large engagement, which builds deep expertise but can feel narrow early on. At a local firm you are more likely to touch an entire engagement from planning to wrap-up, talk directly with business owners, and take on responsibility quickly. Mid-tier firms sit in between, mixing larger clients with broad exposure.
Training and specialization
The Big 4 are known for structured learning programs, global mobility, and clear paths into specialties such as data and analytics, ESG and sustainability, transactions, and technology risk. Mid-tier firms also invest heavily in training and offer real specialization. Local firms teach you to be a broad, capable generalist fast, which is exactly what many private businesses want.
Mentorship and visibility
Smaller firms usually mean closer contact with partners and faster, more personal feedback. Larger firms offer more formal development but more layers between you and leadership. If hands-on mentorship matters to you, weigh that as heavily as the brand.
Exit opportunities from each tier
Exit opportunities are real from every tier. The Big 4 brand opens the widest set of doors fastest, but it is not the only door.
From the Big 4
Big 4 experience and brand translate well into corporate finance, financial reporting, FP&A, internal audit, controller and CFO tracks, and advisory or transaction roles. The combination of name recognition and structured training is genuinely valuable when you want to move quickly into a large company.
From mid-tier and national firms
Mid-tier alumni move into the same industry, controller, and advisory roles, often with deeper hands-on experience to show for it. For most corporate accounting and finance jobs, a strong mid-tier background plus a CPA is more than enough.
From local and regional firms
Local-firm experience builds broad, practical skills, gets you your CPA experience quickly, and is ideal if you want to stay in your region, serve small businesses, or eventually own a practice. Many successful controllers, CFOs, and firm owners started locally.
How to choose your first firm
Match the firm to your goal
Be honest about what you want from the next three years, then choose the tier that serves it.
- Want big public-company work, global mobility, or a prestige-sensitive path? Lean Big 4 or large national.
- Want broad experience, faster responsibility, and better balance? Lean local or mid-tier.
- Not sure yet? Starting bigger and moving smaller later is generally easier than the reverse.
Judge the team, not just the logo
A great team at a mid-tier firm beats a burnout group at a Big 4 office. In interviews, ask about turnover, mentorship, the realistic busy-season schedule, and what associates do after two years. The specific office and service line shape your experience more than the brand.
Protect the one thing that compounds
Across every tier, the CPA license plus real experience is what compounds. Pick the place that helps you earn your hours, study, and pass the exam, then let your work and reputation do the rest. The first firm is a launchpad, not a life sentence.
Frequently asked questions
Is the Big 4 worth the longer hours?
It can be, if you want big public-company experience, global mobility, structured training, and the widest set of fast exit options. If you value balance, broad hands-on work, or staying local, a mid-tier or local firm can be a better fit. There is no universally correct answer.
Can I move from a local firm to the Big 4 later?
Yes. Experienced-hire moves between tiers happen in both directions. Earning your CPA, building a specialty, and showing strong client work make lateral moves into larger firms very achievable after a couple of years.
Does the firm tier affect my CPA license?
No. The CPA is granted by your state board based on education, exam, and experience requirements. Qualifying experience can come from a Big 4, mid-tier, local, industry, or government role, as long as it meets your jurisdiction's rules.
Do you make partner faster at a smaller firm?
Sometimes. Smaller firms can offer a shorter, more visible path to ownership, while the Big 4 path is longer and more competitive but leads to a larger platform. Weigh the kind of partner you want to be, not just the timeline.
Sources and editorial notes
World of Accountants uses public sources, official exam references, and career data where available. Figures vary by year, location, employer, and individual candidate background.
Whatever firm you choose, the CPA is the multiplier.
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