Public standard

Green Gifting Impact Standard

The specification we hold ourselves to, written so another organisation could implement it and get the same answer from the same inputs.

Methodologyv1.2· current

§1 Scope

This standard covers physical gift products sold to consumers or organisations. It addresses cradle-to-customer impacts: material extraction and processing, packaging, and outbound logistics. It explicitly excludes the use phase and end-of-life beyond the recyclability adjustment defined in §4.

§2 Required inputs

Input	Unit	Obligation
Primary material	factor key	Required
Net product mass	grams	Required
Packaging specification	factor key	Required
Origin to destination distance	km	Required
Transport mode	road \| air	Required
Recyclability in destination market	boolean	Required
Category baseline	kg CO₂e	Required, published per category
Secondary materials	factor key + mass	Optional, improves precision

§3 Computation

gis-formula

net_co2e = Σ(material_factor_i × mass_kg_i)
         + packaging_factor
         + (transport_factor × tonne_km)
         − recyclability_credit

GIS      = clamp(0, 100, 100 − (net_co2e ÷ category_baseline) × 62)

Implementations MUST clamp the score to the range 0–100 and MUST record the factor-set version used.

§4 Recyclability adjustment

Where packaging is recyclable through mainstream collection in the destination market, a credit of 15% of gross CO₂e MAY be applied. The credit MUST NOT be applied on the basis of theoretical recyclability where no collection infrastructure exists, and MUST NOT exceed the gross figure.

§5 Confidence and disclosure

Every published score MUST carry a confidence tier — verified, supplier-declared or estimated — determined by the weakest input in the calculation. The tier MUST appear wherever the score appears, at comparable visual weight.

Scores MUST NOT be presented as measured emissions, and derived loyalty rewards MUST NOT be described as offsets, removals or neutrality claims.

§6 Conformance

Reproducible

Given identical inputs and factor-set version, two implementations produce the same score.

Versioned

Every published score names the specification version and the factor-set version it used.

Auditable

The factor table and its sources are published, not held privately.

Our own conformance evidence is the published methodology and the live calculator.