From canadadisabilitybenefit.ca, Plan Institute’s informative website on all things related to the CDB:

“In August 2025, Service Canada discovered that some people’s monthly CDB payments had been miscalculated. If your CDB application was approved by June 30, the working income exemption may not have been applied to your calculation, meaning that the first payment you received might be below your entitlement, or you did not receive a payment at all.

If you are affected by this issue, you will receive a letter from Service Canada in the mail notifying you of the miscalculation. If you receive this letter, you do not need to file a Request for Reconsideration. Service Canada will automatically recalculate your benefit amount to see if you may be entitled to a higher payment.

Once Service Canada has completed the recalculation, you will receive a second letter confirming your revised monthly benefit amount. You will also receive any money owed to you from the months you were approved for the CDB. Your monthly payment will remain the same until the recalculation is complete.

To check how much you may be eligible to receive, you can use the Canada Disability Benefit Estimator tool.”