How to Choose a SOC 2 Auditor: Pricing, Questions, and Red Flags
Your auditor is the second largest cost after the GRC platform and internal staff time combined. Choosing the right firm for your stage saves money and avoids painful audit experiences.
Auditor Tiers: Price, Quality, and When Each Makes Sense
Boutique CPA Firms
$7.5K-$20K
Specialist SOC 2 audit firms with 5-50 team members. Fast turnaround, personal attention, competitive pricing. Examples: Linford & Company, Prescient Assurance, Johanson Group.
Best for: Startups and scale-ups (10-200 employees)
Pros: Lower cost, faster scheduling, deep SOC 2 expertise
Cons: Brand recognition may matter to some enterprise prospects
Mid-Tier Firms
$15K-$40K
Regional and national CPA firms with dedicated compliance practices. Good balance of cost and credibility. Examples: BDO, Grant Thornton, Moss Adams, Schellman.
Best for: Scale-ups and mid-market (50-500 employees)
Pros: Recognised brand, multi-framework capabilities, stable teams
Cons: Longer scheduling lead times, less flexibility
Big 4 Firms
$40K-$100K+
Deloitte, PwC, EY, KPMG. Maximum brand credibility. Required for some regulated industries and IPO preparation. Expensive and sometimes slow.
Best for: Enterprise, IPO-track, heavily regulated industries
Pros: Ultimate brand credibility, global reach, multi-service
Cons: Highest cost, less attention to smaller clients, rigid processes
10 Questions to Ask Before Hiring an Auditor
1. How many SOC 2 audits did your team complete last year?
Look for 50+ per year. SOC 2 specialists move faster and find fewer false issues.
2. Have you audited companies in our industry and with our tech stack?
AWS vs Azure vs GCP experience matters. SaaS vs fintech vs healthcare experience matters.
3. Is the pricing fixed-fee or hourly?
Always insist on fixed-fee. Hourly pricing means your costs increase when the auditor works slowly.
4. What is included in the fee vs what costs extra?
Readiness review, management letter, follow-up calls. Clarify every deliverable.
5. What is your typical timeline from engagement to report?
Good firms commit to timelines. Vague answers mean scheduling risk.
6. Which GRC platforms do you integrate with?
If your platform has direct integration with the auditor, evidence sharing is seamless.
7. Who will be the engagement lead?
You want an experienced manager, not a team of junior staff learning on your audit.
8. What does 'clean' evidence look like for your firm?
Understanding their expectations upfront prevents delays during fieldwork.
9. Do you offer multi-year pricing?
15-20% discount for 3-year commitments is standard. Ask before signing year 1.
10. Can you support additional frameworks later (ISO 27001, HIPAA)?
Switching auditors for a second framework is expensive. Plan ahead.
Red Flags When Evaluating Auditors
Same firm does readiness AND audit
Independence concern. The firm that helped you prepare should not be the one evaluating your work. Some regulators and enterprise customers flag this.
Will not provide fixed pricing
Hourly billing means your cost is unpredictable. Reputable firms can scope the work and provide fixed fees. Resistance suggests they expect scope creep.
Unusually low quote
If the quote is 40-50% below market, the firm may be inexperienced, understaffed, or planning to deliver a minimal audit. A cheap audit that misses issues is worse than an expensive thorough one.
No references from similar companies
Ask for 2-3 references from companies with similar size, industry, and tech stack. Inability to provide references is a warning sign.
Negotiation Tips
Sign a multi-year contract
3-year commitments typically get 15-20% discount. The auditor gets predictable revenue; you get cost certainty and the same team year over year.
Bundle Type 1 and Type 2
If doing both, negotiate a combined price. The incremental cost of Type 2 after Type 1 should be 20-30% less than a standalone Type 2 quote.
Schedule outside Q4
Auditors are busiest October through January (year-end financial audits). Scheduling your SOC 2 audit in Q2 or Q3 gets you better rates and more senior attention.
Get three quotes
Always get at least three quotes from different tiers (one boutique, one mid-tier, and optionally one Big 4). Use the spread to negotiate. Let each firm know they are competing.
Recommended Firm Type by Company Stage
| Stage | Recommended Tier | Budget |
|---|---|---|
| Seed / Pre-Series A | Boutique (Linford, Prescient, Johanson Group) | $7.5K-$15K |
| Series A / B | Boutique or mid-tier (Schellman, Moss Adams) | $12K-$30K |
| Series C+ / IPO track | Mid-tier or Big 4 (BDO, Grant Thornton, Deloitte) | $25K-$60K+ |
| Enterprise / Regulated | Big 4 (Deloitte, PwC, EY, KPMG) | $40K-$100K+ |