New France e-invoicing mandate goes live September 2026 — our implementation is ready. See all mandates →
Switching providers

Switch to Clearvo.
Zero downtime.

Already on Avalara, Vertex, Fonoa, Sovos, or Pagero? Clearvo covers e-invoicing plus Tax Calculations, Tax Number Validation, Compliance Radar, and Real-Time Reporting — all from a single API. We move you over with your full invoice history intact, no compliance gap, and a migration tool that validates everything before a single invoice is submitted.

Start your migration → Talk to our team
Typical migration: 2–4 weeks end to end
Full invoice history imported
Zero compliance downtime
Parallel running until you're confident
Dedicated migration support
How it works

Four steps from old provider
to fully live on Clearvo

We've designed the migration process to remove every reason to delay. No big-bang cutover, no compliance risk, no lost data.

01

Export your data

Export your invoice history and customer records from your current provider as CSV or JSON. We support exports from Avalara, Vertex, Fonoa, Sovos, Pagero, and most other platforms — our migration tool auto-detects the format.

You do: export from current provider. We do: auto-map fields to Clearvo's data model.
02

Validate before committing

Our migration tool runs a full dry-run on your imported data — checking VAT numbers, required fields per country, invoice sequence integrity, and compliance rules — before a single invoice is submitted to a tax authority.

You get: a validation report with pass/fail per invoice, actionable error descriptions, and an estimated time to fix.
03

Run in parallel

Enable dual-submission mode: your API calls go to Clearvo, and we mirror submissions to your current provider simultaneously. Compare outputs, verify parity, and build confidence before committing. Most customers run parallel for one to two weeks.

You control: when to end parallel mode. No pressure, no deadline from us.
04

Cut over

Update your API base URL to Clearvo. Disable your old provider. Done. Invoice sequence continuity is maintained, your historical data is searchable, and all supported country credentials are already configured from your onboarding.

API change: one line — your existing invoice payload structure works as-is or with minimal mapping.
Coming soon

Clearvo Migration Tool — automated import and validation

We're building a self-serve migration tool that handles the entire data import process without needing our team to be involved for every step.

  • Auto-detects export format from Avalara, Vertex, Fonoa, Sovos, and Pagero
  • Field mapping UI — drag-and-drop your columns to Clearvo fields, with smart suggestions
  • Dry-run validation report — see exactly what will pass and what needs fixing before import
  • Batch import with per-invoice error logging and retry
  • Parallel mode toggle — one click to enable dual-submission
  • Cut-over checklist — country credentials, webhook config, API key rotation

In the meantime, our migration team handles this personally for every customer. Get in touch →

Clearvo Migration Tool
Migration progress
✓
Import data 847 invoices from Fonoa export
Done
✓
Field mapping 12 fields auto-mapped, 1 manual
Done
→
Dry-run validation 844 valid · 3 VAT warnings
In progress
4
Parallel mode Submit to Clearvo + old provider
Pending
5
Cut over Update API URL, disable old provider
Pending
Supported imports

We know how the other providers export data

Each provider has its own export format. We've built importers for all of them so you don't have to manually reformat anything.

Fonoa
Auto-detects Fonoa JSON export format. Maps invoice lines, tax codes, and customer identifiers to Clearvo's CDM.
JSON · CSV
Sovos
Supports Sovos batch CSV and API export. Country-specific fields (IT SDI, PL KSeF) mapped automatically.
CSV · XML
Pagero
Imports Pagero UBL/PEPPOL format exports. Business network registrations migrated during onboarding.
UBL · CSV
Avalara
For customers migrating from Avalara's e-invoicing modules (not AvaTax, which is a separate tax calculation product) — we import your invoice history directly. Invoice records, tax codes, and customer identifiers all mapped to Clearvo.
JSON · CSV
Vertex
Imports Vertex transaction logs and invoice exports. Field mapping handles Vertex's tax category and jurisdiction model.
XML · CSV
Other providers
Not on this list? We support generic CSV import with a manual field mapping step. Bring us your export and we'll handle it.
Any CSV

Migration questions

Will there be any gap in my e-invoicing compliance?
No. The parallel running period ensures invoices are submitted to tax authorities by your old provider while Clearvo is being verified. Once you cut over, there is no gap — submissions continue uninterrupted.
What happens to my historical invoice data?
We import your full invoice history into Clearvo so it's searchable and auditable alongside new invoices. Invoice sequence numbers are preserved to maintain continuity for tax authority records.
How much does my API integration need to change?
Minimal. The core invoice payload structure (invoice number, buyer, seller, line items, tax amounts) is standard across providers. Most customers need to change one base URL and handle a small number of field renames. We provide a migration guide specific to your current provider.
What about country-specific credentials — SDI, KSeF, VeriFactu?
Country credentials (Italy SDI, Poland KSeF, Spain VeriFactu, etc.) are configured during onboarding. Our team guides you through each country and can transfer existing credentials where the authority allows it.
How long does the migration typically take?
End to end: 2–4 weeks. The first week is data import and validation. The second week is parallel running. Cut-over typically happens at the start of a new billing period for simplicity. Larger volumes or more countries may extend this slightly.
Do I need to sign a new contract before migrating?
You can start the migration process and run in parallel before signing anything. We want you to be confident Clearvo works for your use case before you commit. Sign when you're ready to cut over.
My Avalara contract is coming up for renewal — what should I do?
Start your Clearvo migration now. Avalara contracts auto-renew, typically with a 30-day cancellation notice window before the renewal date. If you miss that window, you're committed for another year. You can run Clearvo in parallel with Avalara during the migration period — so you can validate that Clearvo works for your use case before you submit your cancellation notice. Migration typically takes 2–4 weeks, which means starting 6–8 weeks before your renewal date gives you room to make the decision with confidence, not under deadline pressure.
Avalara says I owe overages I didn't budget for — do I have to pay before switching?
That's between you and Avalara — we can't help with their billing disputes. What we can do is get you off the platform. Start your Clearvo migration in parallel and cut over as soon as you're confident. Once you're on Clearvo, you won't have this problem again: Clearvo's pricing is published, overages are capped, and you're on a monthly plan with no surprises at renewal.

Ready to make the switch?

Start today — no commitment until you cut over. Our team handles the migration personally.

Start your migration →

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