Billyou vs Smartbill API
A technical comparison for developers evaluating invoicing APIs for Romania. Focused on E-Factura, developer experience and production reliability.
Feature comparison
Key differences
E-Factura: automatic vs manual
Billyou submits invoices to SPV ANAF automatically when you create them, with digital signature included. Smartbill requires a separate manual step through their web interface or a more complex API workflow. For developers building automated pipelines, this makes a significant difference in integration complexity.
Real-time webhooks vs polling
Billyou fires webhook events for every status change: invoice.created, invoice.sent_spv, invoice.confirmed, invoice.rejected. Smartbill does not offer webhooks; you must poll the API repeatedly to check status. This results in higher API usage and slower reaction times in your application.
SDK availability
Billyou offers official SDKs for Node.js, Python and PHP with full TypeScript types and automatic retry logic. Smartbill only offers a PHP client library. Teams building on Node.js or Python must write their own integration from scratch against the Smartbill API.
Pricing transparency
Billyou charges a flat monthly subscription with no per-invoice fees. Your costs are predictable regardless of volume. Smartbill API charges per invoice after a certain threshold, which makes cost forecasting harder as your platform scales.
Ready to switch?
Free sandbox, 10,000 test invoices. Migration guide available.
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