HM Revenue & Customs (HMRC) is procuring for the National Insurance and PAYE System (NPS) procurement. This involves the delivery of Business Application Support and Maintenance services for NPS and other services. The scope of this requirement includes: Business Application Support & Maintenance ("Run"), and A Change Management capability to support change aligned to strategic milestones, key business events, and legislative or business-driven updates. NPS currently operates on a legacy technology estate with limited modularity and scalability. HMRC´s future ambition is to transition towards a more agile, service oriented architecture that supports strategic goals for Income Tax and National Insurance Contributions (NICs) administration, including increased real time processing capability. This investment lays the groundwork for future innovation by ensuring HMRC has access to adaptable and resilient support services that can respond effectively to evolving policy, customer needs, and technology opportunities.