The estimated expense to replace the beleaguered Phoenix pay system has soared to at least £4.2 billion, according to a new audit from Auditor-General Karen Hogan. This report highlights the federal government’s ongoing struggle to address a substantial backlog of pay complaints as it prepares to transition to a new system, Dayforce. The findings underscore the persistent issues that have plagued the Phoenix system since its launch in 2016, leaving a trail of frustration for public servants across Canada.
Auditor-General’s Findings
In a detailed assessment presented to the standing committee on public accounts, Auditor-General Karen Hogan outlined the staggering costs associated with the transition away from the Phoenix pay system, which has been widely regarded as a significant failure in government IT projects. Since its introduction, the system has been mired in complications, resulting in a flood of complaints and inaccurate payments affecting thousands of federal employees. Alarmingly, some of these complaints have remained unresolved for up to seven years.
The government has announced plans to phase out Phoenix in favour of the Dayforce system, starting next year with three departments. However, the transition has been hastened; a previously set target to complete the shift by 2034 was recently moved up to March 31, 2031. During this transitional period, both systems will be operational, raising concerns about the potential for further complications.
Financial Implications and Estimates
While the Parliamentary Budget Officer previously estimated the replacement cost at £2.6 billion in 2019, the latest report from Hogan indicates that the preliminary estimate from Public Services and Procurement Canada (PSPC) has now grown significantly. The Auditor-General cautioned that the £4.2 billion figure is merely a rough estimate that does not encompass all necessary costs for transitioning all departments and agencies to Dayforce.
“I do expect that the actual cost of making this transition will be higher than what’s currently estimated,” Hogan remarked at a press conference. She emphasised that projects of this size often exceed initial cost projections, a sentiment echoed by previous audits that have flagged the risks associated with complex government IT projects.
Backlog of Complaints Remains Unresolved
As of September 30, 2025, the backlog of pay complaints stood at an alarming 233,653 cases, with over 155,000 of those transactions more than a year old. The Auditor-General highlighted that PSPC had set a target to eliminate all pay transactions older than one year by March 2026. However, internal reports suggested that this goal would likely not be achieved.
Past reviews have pointed to the complexity of federal pay rules as a contributing factor to the problems experienced with Phoenix. Despite this, Hogan’s report criticises the slow progress made by the Treasury Board of Canada in simplifying these regulations. The intricacies of pay issues, such as temporary promotions and leave payouts, continue to complicate matters, underscoring the need for reform before introducing a new system.
Government Response
In response to the audit, Joël Lightbound, Minister of Government Transformation, Public Works and Procurement, acknowledged the challenges highlighted by the report. He assured that the government is committed to addressing the backlog and improving oversight. However, the minister’s statement notably did not address the ballooning cost estimate.
At a subsequent press conference, Lightbound was pressed to clarify why the cost estimate had only recently come to light. He stated that detailed costing is currently being worked on at the officials level, indicating ongoing internal discussions about the financial implications of the transition.
Nathan Prier, president of the Canadian Association of Professional Employees union, expressed scepticism regarding the government’s plans, particularly the increased reliance on artificial intelligence. “The AG has just confirmed what public servants already know: Phoenix continues to do untold damage as the cost to taxpayers continues to rise,” Prier stated.
Why it Matters
The ongoing saga of the Phoenix pay system serves as a cautionary tale about the pitfalls of large-scale government IT projects. The escalating costs and unresolved backlog not only reflect poorly on the efficiency of public service administration but also have profound implications for the morale of federal employees. As the government prepares for a transition to Dayforce, the lessons learned—or not learned—from the Phoenix experience will be critical in determining whether this new system can finally rectify the long-standing issues that have cost taxpayers dearly and eroded trust in government operations.
