If you handle, offer for transport, or transport dangerous goods in Canada, keeping your Transportation of Dangerous Goods (TDG) training certificate up to date is not optional. Transport Canada requires that anyone performing these duties be adequately trained and hold a valid training certificate. A lapsed certificate can stop operations and put your compliance at risk. In 2026, the rules remain clear: renewal is tied to the expiry date on your certificate, the mode of transport you use, and your employment situation. This article covers the essential facts about TDG certification renewal in Canada so you can stay compliant without guesswork.
Why TDG Certification Renewal Matters
A valid TDG training certificate proves that you have the knowledge to safely handle dangerous goods. Without it, you cannot legally perform your duties unless you are physically accompanied and directly supervised by someone who holds a valid certificate. For employers, allowing untrained or expired staff to work with dangerous goods can lead to fines and shipping delays. Renewal on time keeps your operations running smoothly and avoids the need for on-site supervision. The rules apply to everyone, from large logistics companies to self-employed individuals.
How Long Is a TDG Certificate Valid?
The expiry period of a TDG training certificate depends on the mode of transport you use. The certificate expires 36 months (3 years) after issuance for transport by road vehicle, railway vehicle, or vessel. If you transport dangerous goods by aircraft, the certificate expires 24 months (2 years) after issuance. This means that if your work involves air transport, you must renew more frequently. Always check the expiry date on your certificate. It will be clearly marked with the words “Expires on” or “Date d’expiration” followed by the date.
When Do You Need to Renew?
You need to renew your TDG certification when one of two situations occurs. First, when the expiry date on your certificate arrives. If you transport by road, rail, or vessel, that is after 36 months. For air transport, it is after 24 months. Second, if you change employers. TDG training certificates are not transferable between employers. If you work for a new company, you must obtain a new certificate from that employer. Employees who work for more than one employer at the same time must have a separate certificate for each employer. Self-employed persons may issue their own training certificate if they believe they are adequately trained.
What the Renewal Process Involves
Renewing TDG certification usually means taking a training course that covers the current regulations and your specific duties. Transport Canada requires that your training address the aspects of handling, offering for transport, or transporting dangerous goods that your job involves. After training, your employer must issue you a new training certificate. Employers can only issue a certificate if they believe, on reasonable grounds, that you are adequately trained. The certificate can be in paper or electronic format. Once issued, keep a copy with you or accessible while performing duties.
Employer Responsibilities for Renewal
Employers bear the responsibility for issuing training certificates and maintaining records. When a certificate expires, the employer must arrange for retraining and issue a new certificate. Employers must also keep a record of training and a copy of each training certificate until two years after its expiry date. This record-keeping requirement applies even after a certificate has expired. During an inspection, Transport Canada may ask to see these records. Keeping them organised helps demonstrate compliance. If an employee continues to work with dangerous goods after their certificate expires without direct supervision, the employer could face enforcement action.
What Information Must a TDG Certificate Include?
Every valid TDG training certificate must contain specific details. These include your employer’s name and business address, your name, the expiry date preceded by “Expires on” or “Date d’expiration”, the aspects of handling, offering for transport, or transporting dangerous goods that you are trained for, and the signatures of both you and your employer. Self-employed persons include their own name and signature. When you renew, check that all of these elements are present on your new certificate. An incomplete certificate may not be considered valid by enforcement officers.
Consequences of Letting Your Certificate Expire
Operating with an expired TDG training certificate puts you in a difficult position. Without a valid certificate, you may only perform duties while physically accompanied and directly supervised by someone who is trained and holds a valid certificate. This can slow down work and complicate logistics. If you are self-employed, you cannot simply keep working. You must arrange for retraining and issue yourself a new certificate before you resume duties. There is no grace period mentioned in the regulations, so the expiry date is a firm deadline. The best approach is to track your renewal date and schedule training well before it arrives.
Keeping Your Certificate and Records
Employers and self-employed persons must keep a copy of each training certificate until two years after its expiry date. This applies to both the current certificate and previous ones. If you are an employee, your employer will hold the official record, but it is smart to keep your own digital or paper copy. Electronic certificates are perfectly acceptable as long as they are accessible. When you change employers, your old certificate remains with your previous employer. You must start fresh with your new employer, who will issue a new certificate after verifying your training.
Frequently Asked Questions
Can I renew my TDG certification online?
Yes, many training providers offer online TDG courses that cover the required material. However, your employer must determine that you are adequately trained based on the training you complete. Online training is common for general TDG knowledge, but be sure to confirm with your employer whether an online course meets their requirements for your specific duties.
What happens if my TDG certificate expires while I am on leave?
Your certificate still expires on the date shown. When you return to work, you cannot perform dangerous goods duties without a valid certificate or direct supervision. You will need to complete retraining and obtain a new certificate before resuming your normal role. Plan ahead if you know you will be away near the expiry date.
Do I need to renew my TDG certificate if I change jobs?
Yes. Training certificates are not transferable between employers. If you start working for a new company, that employer must issue you a new certificate after confirming you are adequately trained. Your previous certificate remains with your former employer and cannot be used at your new job.
How long must employers keep training records after a certificate expires?
Employers must keep a record of training and a copy of each certificate until two years after its expiry date. This applies even after the certificate has expired. Keeping these records helps demonstrate compliance during Transport Canada inspections and ensures you can verify training history if needed.