
The New Standard in Cross-Border Tax Intelligence.
Cross-border portfolios silently bleed returns every year. Altara unifies your data, automates global compliance, and recovers the yield you're leaving on the table.
The Invisible Tax on Growth.
Global portfolios lose over $500 billion annually to unclaimed withholding taxes, missed treaty benefits, and manual errors. The money is recoverable — but only if you can see it. Our makes sure you don't leave it behind.
Unclaimed Yield
10-30% of foreign income lost to withholding taxes that are never reclaimed.
The Compliance Trap
Increasing regulatory tightening (FATCA, CRS, BEPS) turns missed deadlines into audit risks.
Data Fragmentation
Critical tax data is trapped in spreadsheets and siloed custodian portals.
How Much is Your Portfolio Leaking?
Use our calculator to estimate your annual recoverable yield.
How Altara Solves It
Three pillars of intelligent tax management, unified in one platform.
Unified Global Clarity
Altara pulls data from every custodian, bank, and private fund into one source of truth — so you never have a blind spot again. Whether you're a , , or , see your entire portfolio in real-time.
- Automated data aggregation across institutions
- Real-time portfolio visibility
- Multi-jurisdiction tax intelligence

Intelligent Reclaim Workflows
Your portfolio is likely overpaying withholding taxes right now. Our AI engine finds every missed treaty benefit and builds a step-by-step recovery plan across jurisdictions.
- AI-powered treaty optimization
- Step-by-step recovery roadmaps across 50+ jurisdictions
- Real-time tracking and reporting
Audit-Ready Defense
Altara tracks every filing deadline, maintains a real-time audit trail, and cuts manual compliance work by 50%+. Stay ready for FATCA, CRS, and any regulatory inquiry — without the stress.
- Complete audit trail documentation
- Automated compliance calendar
- Regulatory change monitoring
Built for the World's Most Sophisticated Portfolios.
Your data is protected with bank-grade security and full data sovereignty. Trusted by forward-thinking and to protect capital across generations. .
Security You Can Trust
Your data is protected with end-to-end encryption, multi-factor authentication, and complete data sovereignty. Altara meets the security requirements of the world's leading financial institutions.
Solutions Tailored to Your Needs
Turn Tax Intelligence into Alpha.
Your returns deserve better than spreadsheets and missed deadlines.