# Can a Japanese steel or aluminium exporter deduct GX emissions trading costs from CBAM?

Canonical: https://senseible.earth/answers/japan-gx-ets-carbon-price-cbam-deduction

Only for a price effectively paid. Japan's GX emissions trading becomes mandatory for large emitters from 2026, with allowances largely free at first. Until a plant pays for allowances beyond its allocation, there is little to deduct. Keep the evidence ready.

## What changes from 2026

Japan has moved its GX emissions trading from voluntary participation to a mandatory scheme for companies above an emissions threshold. Allocation is expected to be largely free in the early years.

## What counts for CBAM

- Allowances actually bought and surrendered beyond the free amount.
- Any separate carbon levy actually paid.
- Net of rebates or compensation.

## Check before declaring

The Commission decides how foreign carbon prices are recognised. Confirm the current rules and keep the allocation and surrender records for the year.

## What Senseible does here

Senseible reads fuel, electricity and production documents into dated, fingerprinted installation records, the starting point for the actual emissions an EU importer asks for.

- [Korea ETS and the CBAM deduction](https://senseible.earth/answers/korea-ets-carbon-price-cbam-deduction)
- [SSBJ and Japanese buyers](https://senseible.earth/answers/ssbj-japanese-buyers-supplier-emissions)
- [EU ETS vs CBAM](https://senseible.earth/answers/eu-ets-vs-cbam-difference)

Sources: [CBAM Regulation (EU) 2023/956, consolidated](https://eur-lex.europa.eu/eli/reg/2023/956/2025-10-20), [European Commission, CBAM definitive regime](https://taxation-customs.ec.europa.eu/carbon-border-adjustment-mechanism/cbam-definitive-regime_en)

Last reviewed 2026-10-22.