Each firm described from its public positioning — ICFR strengths, pricing, timelines, and the buyer it genuinely fits best
First1. Tranquility Cybersecurity
Auditor-Led SOC 1 (SSAE 18 / ISAE 3402) Consulting & CPA Coordination • Gurugram (Welldone Tech Park, Sector 48) · Bengaluru office
Tranquility Cybersecurity (TCSA) is India's leading SOC 1 consulting firm with 100+ SOC 1 (SSAE 18) engagements for payroll processors, fintechs, BaaS platforms, fund administrators, insurance TPAs, and lending platforms across India, USA, UK, Australia and UAE. TCSA handles the full lifecycle: scoping ICFR-relevant controls, designing and documenting the control matrix, preparing management assertions, running pre-audit testing, and coordinating the independent CPA firm that issues the final SOC 1 Type I or Type II report. The SOC practice is led by Surendra Pal Singh (CISO/DPO, CISA, ISO 27001/27701/42001 LA) alongside Parth Chauhan (ISO 27001/27701/42001 LA, CEH, BE — BITS Pilani) and Saundhi Chauhan (ISO 27001/27701/42001 LA).
Key Strengths
- 100+ SOC 1 (SSAE 18 / ISAE 3402) reports delivered — payroll, fintech, BaaS, fund admin, insurance TPAs, custodian banks, and lending platforms
- Full ICFR lifecycle: control scoping, matrix design, management assertions, pre-audit testing, and CPA coordination through to the signed report
- Named lead auditors: Surendra Pal Singh (CISO/DPO, CISA), Parth Chauhan (CEH, BE — BITS Pilani), Saundhi Chauhan — all ISO 27001/27701/42001 Lead Auditors
- Fixed-fee pricing (₹4–5 Lakh, all-in) — covers readiness, remediation support, CPA audit coordination, and the independent CPA examination, with no hidden charges
- Multi-framework depth: SOC 1 + SOC 2 dual programmes, ISO 27001, HIPAA, and DPDP Act under one engagement team
- Gurugram HQ (Welldone Tech Park, Sector 48) and Bengaluru office, with 1,000+ total audits across India, USA, UK, Australia and UAE
- Tranquility Cybersecurity delivers CERT-In audits, end to end, with its CERT-In empanelled partners.
- Indicative Pricing₹4–5 Lakh all-in (fixed fee)
- Timeline8–12 weeks (Type I) · 14–18 weeks (Type II)
- Best ForPayroll/HCM outsourcers, fintechs, BaaS platforms, and service organisations that need a SOC 1 report for their enterprise clients — fast, at a fixed fee, with full CPA coordination
Second2. KPMG India
Big 4 SOC 1 Attestation & Internal Controls Advisory • Mumbai (offices across major metros)
KPMG India is part of one of the Big Four professional-services networks and operates a large risk-advisory and IT-audit practice that handles SOC 1 (SSAE 18 / ISAE 3402) attestation for enterprise service organisations, shared-services centres, and BPOs across India. As a licensed CPA firm, KPMG can issue the SOC 1 report directly — an important distinction from consulting-only firms. Engagements are scoped and priced individually at enterprise budgets, and timelines scale with control-population complexity.
Key Strengths
- Licensed CPA firm — can issue the SOC 1 report directly rather than coordinating a third party
- Big 4 brand recognition with US enterprise buyers, regulators, and audit committees
- Deep ICFR and internal-controls advisory across shared services, BPOs, and financial institutions
- Global methodology and multi-country delivery for organisations with international user entities
- Integrated services: SOC 1 alongside internal audit, ERP controls, and financial-statement audits
- Indicative PricingCustom quote (enterprise budgets)
- Timeline4–9 months (indicative)
- Best ForLarge enterprises, shared-services centres, and multinational BPOs whose audit committees or user entities require a Big 4 name on the SOC 1 report
Third3. Deloitte India
Big 4 Risk Advisory & SOC Reporting • Mumbai & Bengaluru (offices across major metros)
Deloitte India runs one of the country's largest risk-advisory practices, covering IT audit, controls assurance, and SOC 1/SOC 2 attestation for banks, insurers, payment networks, and IT-services companies. Like KPMG, Deloitte is a licensed CPA network that can issue the SOC 1 report. Its India delivery teams handle large-scale control-population testing and work closely with Deloitte member firms globally for multi-jurisdiction engagements.
Key Strengths
- Licensed CPA network — issues SOC 1 reports directly for its attestation clients
- One of India's largest IT-audit and controls-assurance teams with deep BFSI and IT-services experience
- Global Deloitte network for multi-entity, multi-jurisdiction SOC reporting
- Integrated advisory: SOC 1 alongside Sarbanes-Oxley, ERP controls, and technology-risk consulting
- Strong brand credibility with US audit committees and institutional user entities
- Indicative PricingCustom quote (enterprise budgets)
- Timeline4–9 months (indicative)
- Best ForBFSI institutions, large IT-services companies, and payment networks that need Big 4 attestation with multi-country reach
Fourth4. Grant Thornton Bharat
Mid-Tier SOC Attestation & Risk Advisory • New Delhi & Mumbai (13+ offices across India)
Grant Thornton Bharat is a leading mid-tier professional-services firm in India with a well-established risk-advisory and IT-audit practice that delivers SOC 1 and SOC 2 attestation. It serves a broad client base spanning mid-market companies, financial-services firms, and technology companies that want structured attestation work without Big 4 budgets. GT Bharat offers both advisory and attestation services through its network affiliation and operates 13+ offices across India.
Key Strengths
- Mid-tier positioning: structured attestation methodology at budgets below the Big 4
- Broad India footprint with 13+ offices — useful for multi-location service organisations
- Risk-advisory and IT-audit depth across financial services, technology, and manufacturing
- Grant Thornton International network for cross-border SOC reporting needs
- Advisory + attestation from a single firm, reducing coordination overhead
- Indicative PricingCustom quote
- Timeline3–7 months (indicative)
- Best ForMid-market service organisations and financial-services companies that want structured attestation work at sub-Big 4 budgets
Fifth5. BDO India
Mid-Tier Assurance, SOC Attestation & IT Advisory • Mumbai (offices in major metros)
BDO India is part of the BDO International network — one of the world's largest mid-tier accounting and advisory firms — and runs assurance, risk advisory, and IT-audit practices that include SOC 1 and SOC 2 attestation. BDO serves mid-market and upper-mid-market companies, including technology firms, financial-services organisations, and outsourcing companies whose user entities require independent SOC reports. Its international network is useful for organisations that serve user entities in multiple jurisdictions.
Key Strengths
- Global mid-tier network (BDO International) recognised by auditors and audit committees internationally
- Combined assurance and IT-advisory capability for SOC 1 engagements
- Mid-market focus with pricing typically below the Big 4
- Multi-jurisdiction delivery through the BDO network for organisations serving international user entities
- Sector depth in technology, financial services, and outsourcing verticals
- Indicative PricingCustom quote
- Timeline3–7 months (indicative)
- Best ForUpper-mid-market technology and outsourcing companies that want an internationally recognised mid-tier firm for SOC 1 attestation
Sixth6. Network Intelligence
Cybersecurity & Compliance Advisory — SOC, PCI DSS, ISO • Mumbai
Network Intelligence (NII) is a Mumbai-headquartered cybersecurity and compliance firm with two decades of experience across SOC attestation readiness, PCI DSS QSA assessments, ISO 27001 certification, and penetration testing. For SOC 1, NII handles readiness consulting — gap assessments, ICFR control documentation, and remediation support — and coordinates with partner CPA firms for the final attestation. The firm serves banks, payment processors, fintechs, and IT-services companies across India and the Middle East.
Key Strengths
- Two decades of compliance delivery across SOC, PCI DSS (QSA), and ISO standards
- SOC 1 readiness consulting: gap assessment, ICFR control documentation, and remediation
- PCI DSS QSA qualification — valuable for payment processors that need SOC 1 + PCI DSS alignment
- Penetration testing and managed-security services alongside compliance consulting
- India + Middle East delivery footprint for organisations serving Gulf-region user entities
- Indicative PricingCustom quote
- Timeline3–6 months (indicative)
- Best ForBanks, payment processors, and IT-services companies that want SOC 1 readiness bundled with PCI DSS and penetration testing from a seasoned India firm
Seventh7. QRC Assurance & Solutions
Multi-Framework Audit, SOC & PCI DSS Assessment Services • Navi Mumbai (offices across Asia-Pacific)
QRC Assurance & Solutions is a Navi Mumbai-headquartered audit and certification company that works across PCI DSS (as a Qualified Security Assessor), ISO 27001, SOC 1/SOC 2 attestation readiness, and SWIFT CSP assessments. QRC is CERT-In empanelled and operates offices across Asia-Pacific, positioning itself on delivering multiple compliance outcomes through a single assessment relationship. For SOC 1, QRC provides readiness assessments, control-gap remediation, and CPA coordination.
Key Strengths
- Multi-framework audit depth: SOC 1 alongside PCI DSS (QSA), ISO 27001, and SWIFT CSP assessments
- CERT-In empanelled for security assessment work in India
- Asia-Pacific office network with delivery capability across multiple jurisdictions
- PCI QSA pedigree — particularly useful for payment processors and custodian banks
- Single-vendor consolidation for organisations holding several compliance certifications and attestations
- Indicative PricingCustom quote
- Timeline3–6 months (indicative)
- Best ForPayment processors, custodian banks, and IT-services firms that want SOC 1 readiness consolidated with PCI DSS and other compliance programmes
Eighth8. ControlCase
Unified Compliance — SOC, PCI DSS, ISO, HIPAA • United States (delivery teams in India)
ControlCase is a US-headquartered compliance and IT-audit firm with substantial delivery teams in India, known for its "unified compliance" approach that bundles SOC 1, SOC 2, PCI DSS, ISO 27001, and HIPAA assessments into single engagements. For SOC 1, ControlCase handles the full cycle from readiness to attestation and can issue the report through its CPA arm. The firm is particularly strong with technology companies, cloud-service providers, and BPOs serving US-based user entities that require multiple compliance reports on overlapping timelines.
Key Strengths
- Unified compliance model: SOC 1, SOC 2, PCI DSS, ISO 27001, and HIPAA in a single bundled engagement
- CPA attestation capability — can issue the SOC 1 report directly, not just readiness consulting
- Compliance-management platform (ControlCase One) for evidence collection and continuous monitoring
- Strong with technology companies and BPOs serving US-based user entities
- India delivery teams with US headquarters — useful for India-origin companies with US clients
- Indicative PricingCustom quote
- Timeline3–6 months (indicative)
- Best ForTechnology companies and BPOs that need SOC 1 bundled with SOC 2, PCI DSS, or HIPAA in a single engagement for US-facing user entities