The Tax Operating System
Sell anywhere.Taxes handled.
Every return filed. Every jurisdiction covered. GST, sales tax, VAT, transfer pricing — handled end-to-end so your team never touches a government portal again.
Private preview · First cohort onboarding now
You're selling to customers in 12 countries. Your tax compliance covers one.
Hidden obligations
Post-Wayfair, selling $100K into any US state triggers sales tax. Selling B2C in the EU triggers VAT. Most cross-border companies have obligations in multiple jurisdictions they haven't registered in.
Fragmented providers
A CA for India. A CPA for the US. An accountant for the EU. A Big 4 firm for transfer pricing. None of them talk to each other — and collectively they cost tens of thousands a year.
The DD surprise
Investors ask about global tax compliance 3 weeks before close. You discover significant back-tax liability across states you've never registered in. The round is suddenly at risk.
The typical patchwork
Four separate providers. Four separate bills. No shared context. Gaps in between.
Zelvv replaces all four — one platform, every jurisdiction, both tax stacks.
How it works
Four steps to compliant everywhere
Connect
Link Stripe, Razorpay, Zoho, Tally, or bank feeds. One OAuth click. Data flows in automatically.
Discover
Full global tax obligation map in 24 hours. Every jurisdiction, every threshold, every liability — surfaced.
Fix
Registrations filed. Back-returns submitted. Voluntary disclosures handled. Existing exposure resolved.
Autopilot
Every return filed on time, every notice handled, compliance score always current. You approve edge cases.
Replaces 3–4 providers
CA + CPA + EU accountant + TP advisor → one Tax OS
To your global tax map
Connect your data, see every obligation across every jurisdiction
Indirect + cross-entity
No other platform covers GST/VAT/sales tax AND transfer pricing
The Tax OS
One platform. Every jurisdiction. Both tax stacks.
Indirect tax and cross-entity tax — covered under one roof. No other platform does both for growing companies.
Intelligence
Know what you owe, everywhere
- Connect Stripe, Razorpay, Zoho, Tally, or bank feeds
- Global tax obligation discovery across all jurisdictions
- Continuous nexus monitoring with proactive alerts
- Compliance score dashboard (0–100%)
- DD-ready compliance report — one-click export for investors
- Entity structure analysis with "what-if" modeling
Compliance
Every return, every jurisdiction, filed on time
- India GST — GSTR-1, 3B, 9 filing, ITC optimization, vendor compliance, e-invoicing
- US Sales Tax — nexus tracking, registration, filing across 45+ states
- EU VAT — OSS filing, ViDA e-invoicing, reverse charge
- UK VAT — MTD-compliant quarterly filing
- Back-tax remediation and voluntary disclosure
- Notice detection, response drafting, and resolution
Multi-Entity
The second tax stack nobody else covers
- Entity registry — parent, subsidiaries, branches, ownership mapping
- Intercompany transaction tracking and reconciliation
- Transfer pricing documentation — Section 92E, OECD Master File, benchmarking
- Withholding tax — Form 15CA/CB, DTAA treaty rates, W-8BEN-E, FTC tracking
- PE risk monitoring — flag when employee activity creates tax exposure
- Consolidated tax position across all entities and jurisdictions
Advisory
Optimize your structure, not just comply
- Entity structure optimization — Delaware flip analysis, holding structure
- Treaty benefit optimization — withholding minimization, tax credit planning
- New market tax impact reports — "What if we start selling in Japan?"
- ITC/VAT refund maximization across jurisdictions
- Audit preparation and defense packages
From India to everywhere
Monitoring covers 20+ jurisdictions from Day 1. Filing rolls out per jurisdiction.
India GST
LiveGSTR-1, 3B, 9 · ITC optimization · Vendor compliance · E-invoicing
US Sales Tax
Soon45+ states · Nexus monitoring · Registration · Filing · Remediation
EU VAT
SoonOSS filing · ViDA e-invoicing · 27 member states · Reverse charge
UK VAT
SoonMTD filing · Quarterly returns · HMRC agent registration
Transfer Pricing
SoonSection 92E · OECD Master File · Benchmarking · AI documentation
Withholding Tax
SoonForm 15CA/CB · DTAA treaties · W-8BEN-E · FTC tracking
One OS vs. the patchwork
| Zelvv | Tools | CA+CPA | |
|---|---|---|---|
| India GST — deep compliance | |||
| US Sales Tax — multi-state | |||
| EU VAT / UK VAT | |||
| Transfer pricing documentation | |||
| Withholding / Form 15CA-CB | |||
| All jurisdictions, one platform | |||
| Autonomous — you approve edge cases | |||
| Replaces all providers with one |
Private preview
Get early access.
We're onboarding our first cohort. Join the waitlist for a free global tax audit and early access to the Tax OS.
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