For tax advisors, VAT specialists & CA firms

Big consultant-grade readiness without Big consultant overhead.

Deliver a brandable, evidence-backed e-invoicing readiness engagement under your own firm's name. Atlas is the method; your team stays the face.

Every scan runs the same way, whoever on your team runs it. You stop being the bottleneck.

For tax advisors, VAT specialists, and consulting firms

Own the readiness conversation and the work that follows.

Clients need more than a regulatory briefing. They need to know:

Atlas gives advisory teams a repeatable way to answer these questions without relying on disconnected workshops, spreadsheets, and findings decks.

What you gain
A productized advisory engagement

Deliver a defined readiness assessment under your own brand or co-branded with OneSig.

More technical follow-on work

Extend into tax-rule design, ERP remediation oversight, master-data correction, ASP selection, testing, governance, and PMO support.

A stronger client position

Lead the program before technology vendors define the requirements.

Long-term advisory revenue

Continue through implementation assurance, audit readiness, additional entities, new jurisdictions, and ongoing compliance.

How the partnership works
You lead

The client conversation and recommendations.

OneSig provides

The readiness infrastructure, evidence, and structured outputs.

You retain

The advisory engagement and downstream work.

See it on a client account before you commit.

Send one client sample. We return a limited findings report your firm can brand and share within one business day.