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- Service Canada no longer issues plastic SIN cards. If yours is lost or damaged, you can view your number online or request a Confirmation of SIN.
- My Service Canada Account lets eligible users view and print their SIN, while an official confirmation requires an application and supporting documents.
- A lost card does not automatically mean your SIN has been stolen. Take additional fraud-protection steps only if there is evidence of misuse or exposure.
What to do if you lost your Canadian SIN card
If you lost your Social Insurance Number card, you generally do not need a replacement plastic card. Service Canada no longer issues plastic SIN cards, although older cards remain valid. The current options are to view and print your SIN through My Service Canada Account or request an official Confirmation of SIN.
A Confirmation of SIN confirms an existing number. It does not create a new SIN, and losing the card by itself is not evidence that someone has used your number improperly.
Choose the fastest way to find or confirm your SIN
| Your situation | Best option |
|---|---|
| You know your SIN and only need to see it | Sign in to My Service Canada Account and view or print the SIN. |
| You forgot the number but have Canadian records | Check an income tax return, T4 or other tax slip, Record of Employment, or RRSP contribution receipt. |
| You need official proof for yourself or your child | Apply for a Confirmation of SIN through Service Canada. |
| Your temporary SIN beginning with 9 has expired | Update the SIN record with a valid immigration document before relying on the number for work. |
| You believe someone used your SIN | Follow Service Canada’s fraud and data-breach guidance rather than simply requesting a confirmation. |
View and print your SIN through My Service Canada Account
For many people, MSCA is the quickest solution because it provides access to the number without waiting for a paper letter. Once you sign in, open the Social Insurance Number section on your dashboard. You can view and print your SIN, along with the name recorded on the SIN record and any expiry date that applies.
To register, you may need your SIN, a Birth Registration Number or Immigration, Refugees and Citizenship Canada client ID, and an identity-verification method. Available verification methods can include Interac verification, a Personal Access Code, or a SIN application number from a recent online application.
If you forgot your SIN, MSCA may still be available if you can provide your Birth Registration Number or Unique Client Identifier and complete the required identity verification. You must access the account yourself; another person cannot create or use an MSCA account on your behalf.
View the official My Service Canada Account SIN pageRequest an official Confirmation of SIN
If you cannot access MSCA, do not remember your number, or need formal proof for your records, submit a SIN application requesting confirmation of an existing SIN. Service Canada treats this as the same general application process used for a first-time SIN, so you must provide the required identity and status documents even though no new number is being issued.
Online applications require clear digital copies of original documents. Documents must be valid, complete, legible, and generally in English or French. Depending on your status in Canada, you may need a birth certificate or Canadian citizenship document, a permanent-resident document, or an immigration document that authorizes work.
There is no fee to request a SIN or a Confirmation of SIN. If everything is in order, Service Canada says online applications are normally processed within about five business days. The online portal may provide access through MSCA after processing, while a paper confirmation may take longer to arrive.
Apply for an official Canadian SIN confirmationWhat documents should you prepare?
The exact list depends on whether you are a Canadian citizen, permanent resident, temporary resident, Indigenous person registered under the Indian Act, or applying for someone else. You may also need a secondary government-issued identity document showing your legal name and date of birth.
Before starting, gather the primary identity document, any required secondary document, supporting documents for a legal name change, and proof that you are legally authorized to apply for another person. Upload the entire document, including its borders, rather than a cropped image.
Applying for a child’s SIN confirmation
A parent or legal guardian can apply for a SIN or Confirmation of SIN for a child who has not reached the age of majority in the relevant province or territory. The child’s primary identity document is usually a birth certificate, Canadian citizenship certificate, or immigration document, depending on the child’s status.
You will also need documentation proving your relationship or legal authority to apply. If the child was born in a Canadian territory, there may be territory-specific newborn registration options. The application page will identify the documents required for the child’s situation.
A child’s SIN confirmation should be stored securely. It is not an identity document, and it should not be used as a substitute for a passport, provincial identification card, or other photo identification.
Temporary residents and SINs beginning with 9
A temporary resident’s SIN normally begins with the number 9 and is linked to the expiry date of the immigration document authorizing work. The SIN alone does not authorize employment. Employers must also confirm the conditions on the work permit or other immigration document.
If you applied to renew your work or study permit before it expired and remain in Canada under maintained status, you may be able to continue under the same conditions while IRCC processes the renewal. Once you receive the updated immigration document, apply to Service Canada to update the expiry date on your SIN record. The SIN record and immigration document should show matching expiry information.
If your temporary SIN has expired and you do not have authorization to continue working, a confirmation letter will not fix the underlying immigration-status issue. Resolve the permit situation first and then update the SIN record with Service Canada.
What to do if your SIN may have been exposed
A lost card is not automatically the same as identity theft. However, take the situation more seriously if the card was stolen, your SIN appeared in a data breach, you see unfamiliar employment or tax records, or a creditor reports activity you do not recognize.
Service Canada generally issues a new SIN only where there is clear evidence that the existing number has been used fraudulently. A new SIN is not routinely issued after every loss or suspected exposure, and changing the number does not erase records connected to the old one.
If you suspect misuse, keep records of the incident, contact the relevant financial institutions and creditors, review your credit files, report suspected identity fraud to the appropriate authorities, and follow Service Canada’s fraud guidance. Do not respond to unsolicited calls, texts, or emails claiming that your SIN will be cancelled or replaced for an urgent fee.
Read the official SIN protection and fraud guidanceImportant limits on SIN confirmation letters
A SIN card or Confirmation of SIN letter is not proof of identity. It has no photograph and should not be accepted as a substitute for a passport, driver’s licence, provincial identification card, or other identity document.
You also do not need to carry your SIN in your wallet. Employers need your SIN for payroll and reporting purposes, but they should not require you to produce a physical SIN card or confirmation letter as identification. Be cautious when a business asks for your SIN for a purpose that does not legally require it, such as a general rental application, job application, or ordinary telephone-service signup.
How to check the status of a SIN application
If you applied online and have not received a response after the stated processing period, use the official SIN contact service. Have your application details available, including how you applied and when you submitted the request. Service Canada also provides telephone assistance for SIN questions.
Do not submit multiple applications simply because you have not yet received a reply. A duplicate application can create confusion and will not speed up processing. If you made a mistake or left out a required document, Service Canada may require a new application with the full document package.
Contact the official Social Insurance Number ProgramYour safest next step
If you only need to recover the number, try MSCA or check your tax records first. If you need formal proof, submit the official Confirmation of SIN application with complete documents. If there are signs of fraud, use the protection and fraud process rather than treating the matter as a simple lost-card replacement.
Helpful Links
- Social Insurance Number – Review official SIN rules, available services, temporary-resident information, and protection guidance.
- Social Insurance Number: Apply – Select your status and application method to request a first SIN or confirmation of an existing SIN.
- Social Insurance Number in My Service Canada Account – Learn how to view and print your SIN through My Service Canada Account.
- Damaged, forgotten or lost Social Insurance Number – Follow the official process for a lost SIN, child’s SIN, damaged card, or suspected misuse.
- Protect your Social Insurance Number – Check when to provide your SIN, how to avoid scams, and what to do after possible exposure.
- Contact the Social Insurance Number Program – Check application-processing questions and contact Service Canada about SIN services.
Frequently Asked Questions
Q. Can I get a replacement SIN card in Canada?
A. No. Service Canada no longer issues plastic SIN cards. You can view and print your SIN through My Service Canada Account or request a Confirmation of SIN.
Q. Is a Canadian SIN confirmation letter an identity document?
A. No. A SIN card and Confirmation of SIN letter are not identity documents because they do not contain a photograph or identity-security features.
Q. Can I request a new SIN because my number was exposed?
A. Usually not automatically. Service Canada generally considers a new SIN only when there is clear evidence that the existing number has been used fraudulently. A new number also does not remove the need to monitor accounts and records connected to the old one.
Q. Can a parent get proof of a child’s SIN?
A. Yes. A parent or legal guardian can apply for a child’s SIN confirmation before the child reaches the age of majority in the applicable province or territory, provided the required identity and relationship documents are supplied.
