CBAM tools for customs brokers and forwarders

Turn importers' CBAM questions into new clients.

A CBAM calculator for your website. Importers compare two suppliers on one shipment, and the enquiry reaches you with their figures attached.

For customs brokers, freight forwarders, indirect customs representatives and CBAM consultants.

The calculator below is working. Change the import year and the cheaper supplier changes.

Why now

Your importers are already building up a CBAM cost on 2026 imports.

Certificates for 2026 imports go on sale in February 2027. The first declaration is due that September. Importers are asking what it will cost now.

1 Jan 2026

The definitive regime starts. Importers of more than 50 t a year of CBAM goods need authorised CBAM declarant status.

1 Feb 2027

Certificates for 2026 imports go on sale. The 2026 price is the quarterly EU ETS auction average: €75.36 for Q1 and €75.28 for Q2.

2027 onwards

At the end of each quarter, declarants must hold certificates for at least 50% of the emissions imported so far that year.

30 Sep 2027

First annual CBAM declaration and certificate surrender, covering all 2026 imports.

The cost also rises every year. The free-allocation deduction falls from 97.5% of the product benchmark in 2026 to zero in 2034. The same shipment costs more each year.

What it does

Most CBAM calculators stop at the cost.

The importer then asks the harder question. Is the cleaner supplier cheaper, and from which year?

A typical calculator
Shipment → Emissions → CBAM cost
Your tool
Shipment → Emissions → CBAM cost → Supplier comparison → The year the winner changes → An enquiry to your team
Your logo here
Acme Customs Brokers — CBAM supplier cost check Model a shipment, compare two suppliers, and send the scenario to our CBAM team.
White-label preview
1 · Shipment & Suppliers

Which supplier is cheaper once CBAM is added?

Enter one shipment and two suppliers. See the estimated CBAM cost for each, and the import year when the cheaper supplier changes.

Estimate only. This is not a customs, tax or legal calculation. Your CBAM declarant confirms the final figures.
Fills in demo values. Hydrogen and electricity are not in this demo.
The free-allocation deduction shrinks every year. It reaches zero in 2034.
Net mass, from 0.1 to 100,000 t.
Illustrative value, not an EU figure. The real benchmark depends on the CN code and production route. Your declarant supplies it.
The Commission sets a price for each quarter of 2026. Q3 is due on 5 October 2026. From 2027 prices are weekly. For later years, enter your own planning price.

Supplier A

Reference
Verified actual: the supplier's verified emissions. EU default: paste the value without mark-up. The tool adds the mark-up for the import year (10% in 2026, 20% in 2027, 30% from 2028; fertilisers 1%).

Supplier B

Alternative
Verified actual: the supplier's verified emissions. EU default: paste the value without mark-up. The tool adds the mark-up for the import year (10% in 2026, 20% in 2027, 30% from 2028; fertilisers 1%).

2 · Comparison & Decision

Which supplier costs less after CBAM?

Carbon price already paid in the supplier's country is not deducted. If the suppliers are in different countries, this can change the result.

Supplier A

—
Emissions used—
Estimated certificates—
Estimated CBAM cost—
Material cost—
Total (material + CBAM)—
Total per tonne—

Supplier B

—
Emissions used—
Estimated certificates—
Estimated CBAM cost—
Material cost—
Total (material + CBAM)—
Total per tonne—

Which supplier is cheaper, year by year?

Year Supplier A total Supplier B total Cheaper

Same certificate price every year. Only the deduction and the default mark-up change.

How this estimate works

Emissions used: If data source is verified actual, the supplier's entered figure is used directly. If data source is EU default, the regulatory mark-up for the import year is added (iron & steel, aluminium, cement: 10% in 2026, 20% in 2027, 30% from 2028; fertilisers: 1%).

Free-allocation deduction: deductionPerTonne = benchmark × freeAllocationShare(year). The free-allocation share falls each year (97.5% in 2026 down to 0% in 2034).

Payable emissions per tonne: max(0, emissionsUsed - deductionPerTonne). It floors at zero per good (no netting across goods).

Estimated certificates: tonnage × payablePerTonne. One certificate covers one tonne of CO₂e.

Estimated CBAM cost: certificates × certificatePrice.

Total (material + CBAM): materialCost + estimatedCbamCost.

Supplier break-even: (payableA - payableB) × certificatePrice. Shows how much more per tonne supplier B can charge and still land cheaper after CBAM.

Rule set: cbam-supplier-v3. All benchmark and emission defaults are demo values, not official EU values.

What this does not include

Official EU default values and benchmarks (the user enters them), route-specific benchmarks, cross-sectoral correction factor, carbon price paid in the country of origin, quarterly holding rule, penalties, customs duty, freight, currency, price changes between years.

Key dates: certificates for 2026 imports go on sale on 1 February 2027. The first annual CBAM declaration, covering all 2026 imports, is due by 30 September 2027.

Your data

The calculation runs in this browser. Your inputs and results are not sent to DecisionPixel. Enquiry details leave this page only when you copy them or send them from your own email app.

Estimate only. Product numbers are demo values, not official EU values. The certificate price is your assumption, not a forecast. This is the generic demo. Your version carries your logo, your colours and your declarant details, and sends enquiries to your team.

White-label

The tool carries your brand.

The dashed header in the calculator is your slot. The delivered tool works as its own page or inside one of your service pages, and every enquiry goes to your team.

  • One branded page, plus the files to install it on your own site.
  • Your logo, your colours and your broker or declarant name.
  • The values, wording and disclaimer you approved.
  • Each enquiry arrives with the full scenario, not just a name and an email.

Annual care and support from £540 a year, optional. Changes £144 an hour. You get a working copy of your tool's source code and settings at acceptance.

How it looks on your service page
CBAM supplier cost check
200 t steel · two suppliers Supplier B cheaper from 2029
Check your shipment →
Documentation

How the calculation works.

Formula

Emissions used: If data source is verified actual, the supplier's entered figure is used directly. If data source is EU default, the regulatory mark-up for the import year is added (iron & steel, aluminium, cement: 10% in 2026, 20% in 2027, 30% from 2028; fertilisers: 1%).

Free-allocation deduction: deductionPerTonne = benchmark × freeAllocationShare(year). The free-allocation share falls each year (97.5% in 2026 down to 0% in 2034).

Payable emissions per tonne: max(0, emissionsUsed - deductionPerTonne). Floored at zero per good (no cross-good netting).

Estimated certificates: tonnage × payablePerTonne. One certificate covers one tonne of CO₂e.

Estimated CBAM cost: certificates × certificatePrice.

Total (material + CBAM): (materialPrice × tonnage) + estimatedCbamCost.

Supplier break-even: (payableA - payableB) × certificatePrice. That is how much more per tonne supplier B can charge and still cost less once CBAM is added.

Free-allocation share by import year

2026 97.5% · 2027 95% · 2028 90% · 2029 77.5% · 2030 51.5% · 2031 39% · 2032 26.5% · 2033 14% · 2034 0%.

Default-value mark-up table

Iron and steel, aluminium, cement: 10% in 2026, 20% in 2027, 30% from 2028 onwards. Fertilisers: 1% in all years.

Inputs

  • CBAM product and import year.
  • Shipment size in tonnes.
  • CBAM benchmark for the product.
  • Certificate price. The calculator does not forecast it.
  • Both suppliers: country of origin (optional), material price per tonne, data source (verified actual or EU default), and embedded emissions per tonne.

Assumptions in this demo

  • Benchmark and emission defaults are demo values, not official EU default values or benchmarks.
  • Both suppliers use the same benchmark.
  • One shipment. The 50 t yearly threshold is shown as a flag, not a filing.
  • Prices are in euros, because CBAM certificates are priced in euros.

What is not included

Official EU default values and benchmarks (the user enters them), route-specific benchmarks, cross-sectoral correction factor, carbon price paid in the country of origin, quarterly holding rule, penalties, customs duty, freight, currency, price changes between years. Your version can include any of these.

Limits

This is an estimate to start a conversation. It is not a filing calculation, and it is not customs, tax or legal advice. Confirm the declarant obligation, CN code, default value, benchmark and certificate price with an authorised CBAM declarant before acting.

How your version is checked

Against at least five of your own shipments, plus extreme and invalid inputs, small screens, keyboard use, and both themes. The checklist is part of the written scope.

See the equipment finance demo, built the same way · Pricing and scope

The build process

How a build runs.

01

Scope

What your importers need to work out, which CN codes are involved, and what data you hold.

02

You approve the rules

The formula, the values, the wording, the limits and five worked examples from real shipments.

03

Build and testing

Your examples, extreme tonnages and prices, small screens and keyboard use. Then the enquiry is wired to your inbox.

04

Acceptance

The written checklist from day one. You sign it off before the tool goes on your site.

Investment & scope

CBAM decision tools, from £3,000.

One tool, built around the values, wording and checks you approved, in your brand, live in two to three weeks.

Two suppliers compared, up to eight inputs, your disclaimer, and an enquiry that arrives with the full scenario. One revision round. You get a working copy of your finished tool's source code and configuration at acceptance.

Annual care and support from £540 a year, optional. Changes £144 an hour.

PDF exports, CRM delivery, multiple languages and multi-site deployments are quoted in the written brief. Additional work is £144 an hour.

Send us a shipment.

A typical shipment, a couple of CN codes, and whether you hold verified supplier emissions or use the EU default value. That is enough for a scope and a price.