shouldiuse.io

VERDICT

Should I use Deloitte?

Discover industry insights and audit, tax, and consulting services that drive impact from Deloitte's global network of member firms. - deloitte.com

Depends. Right fit for large enterprises with complex audit, tax, or security needs and budget for a Big Four engagement. Small and mid-sized businesses get better value from local CPA firms, boutiques, or managed providers.

Confidence

Medium. Based on 40+ public sources; review snippets partially truncated.

Ratings

  • Value for money
  • Ease of useProfessional services, not software
  • Feature depth
  • Support qualityNo client-support evidence found
  • Security posture

Pricing

Quote-only

Consulting engagements

ModelNot disclosed
Monthly feesNot disclosed
HardwareNot disclosed
Free tierNo
DART research subscriptionsUnpublished

Best for

  • Global enterprises needing audit and tax
  • Regulated industries (banking, government)
  • Large transformations and cyber incident response

Not for

  • Small businesses needing basic tax or bookkeeping
  • Buyers wanting published pricing or self-serve
  • Teams needing quick, fixed-scope projects
  • Anyone without six-figure-plus engagement budgets

Gotchas - check before you buy

high

2017 hack revealed clients' confidential emails

high

Paid $5M to Rhode after vendor breach hit social-services records

medium

Consulting rates are unpublished; costs surface only during scoping

medium

If Deloitte is your MSA preferred vendor, switching providers gets messy

Pros and cons

Pros

  • Broad coverage: audit, tax, consulting, digital, cybersecurity
  • Global delivery through member-firm network
  • Products rated 4.2/5 on G2
  • Self-ranked No. 1 in security services by revenue
  • Deep bench: 3,266 open security roles on Indeed

Cons

  • No public consulting pricing; quote-only engagements
  • Employee rating just 3.6/5 from 25,000+ reviews
  • 2017 cyber-attack exposed clients' secret emails
  • Paid $21.5M to DOJ over alleged conduct (Aug 2026)
  • Thin public client-review footprint: 225 Trustpilot reviews

Sources & method

Analyzed 9/20/2026 - 14 sources - Multiple incidents: 2017 client-email breach, 2025 Rhode data-breach payout, 2026 CVE disclosed.

official x2review x4security x3news x5
  • 2017 cyber-attack exposing client emails, Attack revealed clients' secret emails; Guardian coverage confirmed the incident.
  • Rhode Island RIBridges data breach, Deloitte paid $5M in connection with a breach of Rhode social-services data.
  • CVE-2026-57476, NVD-listed CVE tied to Deloitte AI Assist for Customer disclosure issue.

Key stats

  • Value for money: 2/5

    Rating

  • Quote-only

    Starting price

  • 14

    Sources

  • Analyzed

  • Value for money: 2/5. Quote-only pricing; buyers push for lower rates
  • Ease of use. Professional services, not software
  • Feature depth: 5/5. Audit, tax, consulting, security all in-house
  • Support quality. No client-support evidence found
  • Security posture: 2/5. 2017 breach, 2025 payout, 2026 CVE
  • 4.2/5 G2 product rating 81 reviews
  • 3.6/5 Employee rating 25,000+ AmbitionBox reviews
  • 225 Trustpilot reviews thin client-review footprint
  • $21.5M DOJ settlement Aug 2026, alleged misconduct resolved

Pricing

Consulting engagements

Quote-only

  • Scoped per project
  • No published rates

DART research subscriptions

Unpublished

  • iGAAP research tool access

Security

Multiple incidents: 2017 client-email breach, 2025 Rhode data-breach payout, 2026 CVE disclosed.

  • 2017 cyber-attack exposing client emailsAttack revealed clients' secret emails; Guardian coverage confirmed the incident.⁵
  • Rhode Island RIBridges data breachDeloitte paid $5M in connection with a breach of Rhode social-services data.⁶
  • CVE-2026-57476NVD-listed CVE tied to Deloitte AI Assist for Customer disclosure issue.⁷

What users say

Client-facing products score 4.2/5 on G2, but 25,000+ employees rate the firm just 3.6/5.

“I enjoy it.”
Reddit, r/deloitte

Companies that use it

  • Boeing11
  • State of Rhode Island (RIBridges)⁶
Full analysis

Based on 40+ public sources; review snippets partially truncated.

Big Four consulting for big-budget enterprises — overkill, opaque pricing, breach history for smaller buyers.

Methodology

Based on 40+ public sources; review snippets partially truncated.

Sources

  1. Deloitte Products on G2g2.com
    review
  2. Deloitte Reviews — AmbitionBoxambitionbox.com
    review
  3. Trustpilot reviews of deloitte.comtrustpilot.com
    review
  4. r/deloitte employee discussionsreddit.com
    review
  5. Guardian: Deloitte hit by cyber-attack revealing clients' emailstheguardian.com
    security
  6. Deloitte pays $5M over Rhode breachcybersecuritydive.com
    security
  7. CVE-2026-57476 Detail — NVDnvd.nist.gov
    security
  8. Deloitte Agrees to $21.5M settlement — DOJjustice.gov
    news
  9. Deloitte security services rankdeloitte.com
    official
  10. DART pricing pagedart.deloitte.com
    official
  11. Deloitte clients listbig4accountingfirms.com
    news
  12. Preferred-vendor MSA switching paincodingscape.com
    news
  13. Mid-market managed SIEM alternativesunderdefense.com
    news
  14. Deloitte AI debacle — CFO Divecfodive.com
    news

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