Case Study - Investment Platform and Marketplace

Case Study: Investment Platform and Marketplace Scales Tax Compliance with TAINA

A large investment platform operating across investors, fund administrators and asset managers embarked on a broader onboarding and tax documentation transformation programme with TAINA, addressing growing operational complexity and increasing regulatory demands.

Fragmented documentation processes, inconsistent validation practices across 13–14 fund administrators, missing or incorrect TINs, and duplicate documentation requests created significant remediation challenges. With approximately 8,500 investors requiring remediation and around 3,500 CRS self-certifications needing review, the platform also faced growing pressure from CRS 2.0 requirements.

By introducing TAINA’s digital tax compliance capabilities, including secure online tax form journeys, real-time validation and pre-population of known data, the platform established a phased approach to modernising investor tax documentation and improving operational efficiency.

Discover how TAINA is helping an investment platform and marketplace address complex tax documentation challenges while building a scalable foundation for digital investor onboarding and compliance.

Key challenges:

• High volumes of incorrect and incomplete forms: Not-In-Good-Order (NIGO) forms created significant remediation work and delays.

• Missing and incorrect TINs: Inaccurate taxpayer identification data increased the effort required to review and correct investor records.

• Fragmented validation processes: Inconsistent practices across 13–14 fund administrators made it difficult to standardise tax documentation.

• Duplicate documentation requests: The absence of a single source of truth led to repeated requests for investor information across funds.

• Growing CRS 2.0 remediation requirements: Thousands of investor records required review, placing additional pressure on operational teams.

• Complex investor structures: Managing entities and controlling persons added further complexity to tax documentation and compliance processes.

Key features of the solution include:

• Digital Tax Form Journeys: Authent-a-Link enables investors to securely complete new or remedial tax self-certifications online.

• Real-Time Validation: Validation before submission helps identify errors earlier and reduce the need for repeated remediation.

• Data Pre-Population: Known investor information can be pre-populated to simplify form completion and reduce repetitive data entry.

• CRS Self-Certification Validation: Supports the review and remediation of CRS self-certifications to improve documentation quality.

• Single Investor View Strategy: Supports a more consistent approach to investor information and documentation management.

• Change in Circumstance Support: Helps support ongoing tax documentation requirements when investor circumstances change.

• API and Platform Integrations: A phased implementation approach enables progression from standalone deployment to deeper integrations with onboarding, KYC and AML environments.

Projected business impact

The project's internal business case indicated the potential to reduce form rejection rates by up to 85%, streamline CRS remediation across approximately 3,500 accounts, and reduce the operational effort associated with investor remediation. These figures are projected outcomes, rather than confirmed results achieved in production.

At TAINA, we help global financial institutions reduce tax risk, improve operational efficiency, and deliver compliant digital experiences at scale.

To learn more about how TAINA’s Tax Form API can benefit your organization, fill in the form to download the full case study or get in touch with us today.