CBAM Reporting Deadlines for 2026: Full Calendar

Tracking CBAM reporting deadlines is critical for avoiding automatic penalty calculations. This calendar covers all 2026 deadlines and explains what happens if you miss them.

2026 CBAM Deadline Calendar

Quarter	Reporting Period	Submission Deadline	Days Available
Q1	January 1 – March 31	April 30, 2026	30 days
Q2	April 1 – June 30	July 31, 2026	31 days
Q3	July 1 – September 30	October 31, 2026	31 days
Q4	October 1 – December 31	January 31, 2027	31 days

What Happens If You Miss a Deadline?

Late submissions trigger automatic consequences:

First 30 days late: Penalty warning from national competent authority 30–60 days late: €10–€50 per tonne of unreported CO₂ 60+ days late: Maximum penalty of €100 per tonne Repeated violations: Enhanced scrutiny, mandatory audits, and potential import restrictions

The penalty is calculated on the total embedded emissions that should have been reported, not just the overdue portion.

How to Never Miss a Deadline

Use a Compliance Calendar

Mark all four submission deadlines in your calendar at the start of the year. Add internal deadlines at least two weeks before each submission date.

Set Automated Reminders

Configure email or calendar reminders at three critical points:

• 30 days before deadline — Start data collection
• 15 days before deadline — Generate draft report
• 7 days before deadline — Final review and submission

Prepare Data in Advance

Product import data is available from customs declarations as soon as goods clear. Start your CBAM report preparation before the quarter ends, not after.

CbamTrack's built-in compliance calendar tracks all CBAM deadlines with automatic email reminders and iCal export for integration with your existing calendar system.

Deadline Planning Tips

1. Start early — Begin data collection 4–6 weeks before each deadline
2. Use default factors if needed — Don't delay submission waiting for supplier data
3. Submit early — You can amend a report within two months after submission
4. Document everything — Keep records of all data sources and calculations
5. Review trends — Compare each quarter against previous ones to spot anomalies

FAQ

What if the deadline falls on a weekend? Submit on the next business day. However, it is safer to submit before the weekend.

Can I get an extension? Extensions are not granted under current CBAM regulations. Plan ahead.

Are the deadlines the same for all EU countries? Yes. CBAM deadlines are set by EU regulation and are uniform across all member states.

Do I need to submit if I had no imports in a quarter? Submit a nil report indicating zero imports. Failing to submit any report — even a nil one — can trigger penalties.

Never Miss a Deadline Again

CbamTrack's compliance calendar sends automated reminders before each quarterly deadline, tracks submission status, and maintains a complete history of all your CBAM reports.