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Scell.io vs Bill.com
Bill.com US B2B payments vs Scell.io EU fiscal compliance
Bill.com (formerly Bill) is a US leader in B2B payments and cloud accounts payable/receivable. The REST API v3 is solid and integration with US ERPs (NetSuite, QuickBooks, Xero) is excellent. Bill.com shines on AP/AR workflow automation and ACH/wire payments. The product is not suited for the French market: no Factur-X, no French VAT, no SuperPDP/PPF. Scell.io is the inverse: no payment or AP/AR layer, but native France 2026 compliance, eIDAS signature and EU-oriented SDKs. Complementary stack: Bill.com for US AP/AR; Scell.io for outgoing France/EU invoices.
Key facts
- Bill.com: leader B2B payments + US AP/AR
- Scell.io: no payment layer, pure invoicing
- Bill.com: REST API v3, community SDKs
- Scell.io: official PHP/JS/MCP SDKs
- Bill.com: no Factur-X / France
- Scell.io: Factur-X 5 profiles + ISCA + EU-SES
Code example
# Scell.io — exposer l'attestation ISCA d'autocertification
curl -X GET https://api.scell.io/api/v1/fiscal/isca/self-attestation/download \
-H "X-API-Key: sk_live_xxx" \
-o attestation_isca_2026.pdf
# PDF signé attestant ISCA conforme DGFiP