Sales-Tax Compliance Made Easy for Castalia Enterprises
Multi-state filings, CPA oversight, and AI-assisted anomaly detection - audit-ready every time.
Castalia enterprises often face multi-state nexus + local jurisdiction audits.- High ecommerce & SaaS presence means frequent compliance risk.
Client Reviews
We support business owners across the country with reliable, remote bookkeeping. Here’s what a few of them say:
We finally feel confident in our sales-tax compliance.
- Fatima Q, CEO
AI detected a nexus we didn’t even know about.
- Marcus T, Tax Director
Peak-season filings are handled without delays.
- Nina M, Tax Specialist
Frequently Asked Questions
Do you integrate with ERP and ecommerce systems?
Yes — NetSuite, SAP, Dynamics, QuickBooks, Shopify, Amazon.
Do you provide exemption certificate validation?
Yes, for tax-exempt customers.
How is pricing structured?
Flat monthly fee per state/jurisdiction.
Do you manage resale certificate tracking?
Yes, optional add-on.
Do you provide CPA-reviewed outputs?
Yes, for GAAP and compliance accuracy.
Do you reconcile filings to the GL?
Yes, to ensure accuracy and prevent audit issues.
Can you reduce penalties and interest?
Yes, with accurate filings and proactive nexus mapping.
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