SaaS & E-Invoicing Platforms

    Add carbon intelligence to your invoicing product. Zero workflow change for your users.

    The Opportunity

    Every invoice processed through your platform already contains the raw material for a carbon footprint calculation — line items, quantities, units, materials, supplier data. Simple's API extracts that data and returns GHG Protocol-compliant CO₂e values, line by line, in seconds.

    For e-invoicing platforms, ERP vendors, and accounting software companies, this means carbon data becomes a native feature of your product — not a separate tool your users have to learn and integrate themselves.

    How the Integration Works

    Simple provides a public REST API that accepts business documents — invoices, quotations, delivery notes, BOMs — and returns structured, activity-based carbon data.

    Submit a document. Send a PDF, scan, or structured data payload via the API. Simple accepts any format, any language.

    Receive line-item CO₂e data. The API returns a structured response with per-line-item emissions — material, quantity, emission factor applied, CO₂e value, and data quality score.

    Embed in your product. Display carbon data inline in invoice views, export it alongside financial data, feed it into dashboards, or pass it through to your users' customers for their own Scope 3 reporting.

    White-label ready. Present the output under your own brand. Simple works as your carbon calculation engine; your product is what your users see.

    Why It Matters for Your Users

    Your business customers are under growing pressure to provide emissions data to their enterprise clients, banks, and regulators. If your platform already processes their invoices, you are one API call away from solving that problem for them — automatically, without asking them to change anything.

    • SME users can respond to supply chain carbon data requests from enterprise customers without any extra work
    • Enterprise users get Scope 3 Category 1 data at line-item granularity, directly from their financial documents
    • Financial institution customers get the emissions data they need for PCAF-compatible financed emissions reporting

    API Capabilities

    • Activity-based methodology — Three-tier emission factor hierarchy: EPD/PCF → ecoinvent → spend-based proxy
    • GHG Protocol compliant — Output aligned with the Corporate Value Chain (Scope 3) Standard
    • Multi-language, multi-format — Processes documents in any language, any file format
    • Data quality scoring — Each line item includes a confidence/quality indicator
    • Audit trail — Full traceability from document line to emission factor to CO₂e result
    • CSRD-ready output — Structured for European Sustainability Reporting Standards compliance

    Partner Programme

    We work with platform partners on custom integration support, co-marketing, and volume pricing. If you process significant invoice volumes and want to offer carbon intelligence as a product feature, get in touch to discuss a partnership.

    Try it with your own document. Right now.

    No account, no credit card — upload an invoice or quotation and see the result in seconds.