Setting an Internal Carbon Price: A Step-by-Step Guide for MSMEs

Published 2026-05-06.

An internal carbon price (ICP) is a self-imposed cost per tonne of CO2e that MSMEs apply to investment decisions. It is a practical management tool to make decarbonisation pay before regulation forces it.

Three flavours of ICP

Type	What it is	When to use
Shadow price	Hypothetical, used in capex evaluation only	Investment screening
Internal fee	Real money charged to business units	Funding green capex
Implicit price	Back-calculated from existing green spend	Benchmarking

What price should you set?

The current EU ETS price, which sets the price of CBAM certificates
Your CBAM exposure, if you export covered goods to the EU
Prices your buyers and peers disclose for their own internal carbon pricing
Your cheapest available abatement cost, as a floor

Set the price below your highest regulatory exposure but above your cheapest abatement cost. Anywhere in that band redirects capex correctly.

A 6-week implementation plan

Week 1–2: Baseline

Use the Carbon Pricing Impact calculator to model exposure at three price points.

Week 3: Set governance

Decide who approves the price (CFO + sustainability lead), how often it reviews (annually), and which decisions it touches (for example, capex above INR 5 lakh).

Week 4: Pilot

Apply to next three capex decisions. Document the outcome.

Week 5–6: Roll out

Add the ICP line to your standard capex template. Train procurement to ask vendors for emissions data.

Common failure modes

Setting it once and never reviewing
Excluding Scope 3 (where most MSME emissions often live)
Letting it become advisory rather than binding