At NBS, we are committed to offering our clients access to the highest standard of financial and compliance services. That is why we have partnered with ISA Audit Ltd — a professional audit firm delivering a comprehensive range of audit and assurance services to businesses operating in Bulgaria and beyond.
Our Trusted Audit Partner — ISA Audit Ltd
ISA Audit Ltd is NBS’s dedicated audit partner, bringing specialist expertise in independent financial audit, internal audit, and a full suite of audit-related assurance services. Through this partnership, NBS clients benefit from seamless access to professional audit support — coordinated through a single, trusted point of contact.
ISA Audit Ltd operates under a rigorous quality control system designed to meet the highest client expectations and to fully comply with the standards set by:
- The Institute of Certified Public Accountants (ICPA) of Bulgaria
- The International Federation of Accountants (IFAC)
- The Public Company Accounting Oversight Board (PCAOB) of the United States
This commitment to international standards ensures that every engagement delivers accurate, reliable financial information — while maintaining strict confidentiality of your company’s data.
How the Audit Process Works
The ISA Audit team follows a structured, methodology-driven approach to every engagement:
- Pre-Engagement Assessment Before accepting any audit engagement, ISA Audit obtains detailed information about the prospective client — ensuring the scope, risks, and requirements are fully understood prior to the end of the financial year.
- Formal Engagement Agreement Every audit is formalised through a contract and an engagement letter that clearly defines the applicable standards, audit methodology, remuneration, engagement timeline, and the composition of the responsible audit team.
- Systematic Audit Execution ISA Audit uses an automated audit management system that guarantees the precise and consistent execution of every engagement. The system encompasses:
- A structured series of audit procedures carried out in accordance with International Standards on Auditing (ISAs)
- Daily reporting of completed procedures for full transparency
- Direct oversight of audit progress at every stage
This systematic approach ensures that nothing is overlooked and that every conclusion is backed by thorough, documented evidence.
Audit & Assurance Services Available Through NBS
Through our partnership with ISA Audit Ltd, NBS clients have access to the following professional audit and assurance services:
- Independent financial audit of annual and consolidated financial statements
- Limited review of financial statements
- Audit of special-purpose financial statements prepared under specific reporting frameworks
- Agreed-upon procedures relating to financial information
- Audit and audit-related services in the public sector
Whether you require a statutory audit, an internal review, or a specialised assurance engagement, our partnership with ISA Audit Ltd ensures you receive expert, internationally compliant audit support.