IRAS Streamlines ACAP Renewal Framework and Introduces Mandatory Digital Declaration in 2026
Singapore businesses participating in the Inland Revenue Authority of Singapore Assisted Compliance Assurance Programme (ACAP) must prepare for significant procedural updates in 2026. The latest revisions simplify certain renewal obligations while introducing a compulsory digital declaration process for Post ACAP Reviews (PAR).
These updates are expected to impact GST-registered businesses, finance leaders, tax professionals, and internal compliance teams managing GST governance and ACAP renewals. According to the latest IRAS guidance, businesses granted ACAP Renewal status from 1 January 2025 may no longer need to conduct a Renewal PAR, unless specifically instructed otherwise. At the same time, a new FormSG submission process became mandatory from 1 February 2026 for businesses completing PAR reviews.
What Is the ACAP Programme?
The Assisted Compliance Assurance Programme (ACAP) is a GST compliance initiative developed by IRAS to encourage businesses to establish strong GST control frameworks and maintain accurate tax reporting. Businesses with ACAP status often benefit from:
- Faster GST refunds
- Reduced GST audits and compliance interventions
- Preferential treatment under voluntary disclosure programmes
- Improved confidence in GST governance processes
IRAS introduced ACAP to strengthen tax compliance standards while rewarding businesses that demonstrate effective internal controls. More than 900 businesses reportedly held active ACAP status by 2025.
Key Changes to ACAP Renewal in 2026
- Removal of Renewal Post ACAP Review (PAR)
One of the most significant changes is the removal of the Renewal PAR requirement for qualifying businesses. Companies granted ACAP Renewal status on or after 1 January 2025 are generally exempt from conducting another Renewal PAR exercise.
Previously, businesses had to perform a post-renewal review to verify that GST controls remained effective. IRAS now considers the renewal review process itself sufficient for ongoing compliance assessment.
However, businesses should note several exceptions:
- IRAS may still require certain businesses to conduct additional PAR reviews
- Businesses using PAR as supporting documentation for GST schemes such as the Major Exporter Scheme (MES) or Import GST Deferment Scheme (IGDS) may still need to complete PAR requirements
- Companies should confirm their GST scheme obligations before assuming exemption eligibility
This update is expected to reduce compliance costs and administrative workload for qualifying businesses.
- Mandatory Digital Declaration via FormSG
From 1 February 2026, businesses completing a PAR must submit a “Declaration on Completion of Post ACAP Review” through FormSG. This digital declaration requirement applies whether the PAR is mandatory or voluntarily conducted.
The declaration process supports Singapore’s broader digital tax administration strategy and replaces older submission methods.
Businesses completing PAR exercises must submit either:
- GST F28 – Post ACAP Review Report
- GST F28A – Certified Post ACAP Review Report
The updated IRAS e-Tax Guides also clarify when each reporting format is required.
Updated GST Reporting Templates
IRAS has also revised the GST F28 and GST F28A templates in January 2026. Businesses and accounting firms should discontinue older versions and adopt the latest reporting templates immediately.
The updated templates align with the new digital declaration framework and include revised compliance references and documentation requirements.
Practical Implications for Businesses
Stronger GST Documentation Expectations
Although the declaration process is now digital, businesses are still expected to maintain complete supporting documentation, including:
- GST testing records
- Sample review evidence
- Error remediation documentation
- Internal review working papers
IRAS may request supporting records during compliance reviews or audits.
Internal Audit and External Reviewer Considerations
Businesses using internal audit teams instead of external accounting firms for PAR reviews may need to submit certified PAR reports using GST F28A. This introduces additional attestation responsibilities and documentation standards.
Need for Updated Compliance Procedures
Finance teams should update their internal GST compliance checklists to include:
- FormSG submission steps
- Updated GST reporting templates
- Revised ACAP renewal timelines
- Documentation retention requirements
Failure to complete the digital declaration process may create administrative non-compliance risks even if the PAR review itself was completed correctly.
How Businesses Can Prepare
To adapt to the revised ACAP framework, businesses should:
- Review whether Renewal PAR exemptions apply to their ACAP status
- Update GST compliance procedures for the mandatory FormSG declaration
- Replace outdated GST F28 and F28A templates
- Assess whether MES or IGDS applications still require PAR support
- Maintain complete documentation for future IRAS reviews
Early preparation can help businesses avoid delays, compliance issues, and unnecessary administrative risks.
Professional GST and ACAP Support in Singapore
Businesses navigating ACAP renewals, GST reviews, or IRAS compliance updates may benefit from professional accounting and tax advisory support.
WLP provides accounting, GST compliance, tax advisory, and corporate support services for businesses in Singapore. Companies seeking assistance with ACAP reviews, GST controls, or IRAS reporting obligations can work with experienced professionals to strengthen compliance processes and reduce regulatory risks.
Conclusion
The latest IRAS updates mark a significant shift in Singapore’s GST compliance landscape. While the removal of Renewal PAR obligations reduces administrative burden for many businesses, the new mandatory digital declaration framework introduces fresh compliance responsibilities.
Companies should carefully review the revised ACAP requirements, update internal procedures, and ensure all GST reporting processes align with the latest IRAS guidance. Businesses that proactively strengthen their GST governance framework will be better positioned to maintain compliance and benefit from smoother ACAP renewals in the years ahead.