What is a dynamic purchasing system?
A dynamic purchasing system (DPS) is an electronic procurement mechanism used by public sector buyers to purchase commonly used goods and services. Unlike a traditional framework agreement, a DPS is open to any qualifying supplier throughout its entire lifetime -- new suppliers can join at any point simply by meeting the admission criteria, and the buyer cannot refuse a compliant application. Buyers then run mini-competitions or, in some cases, make direct awards to listed suppliers from within the DPS.
Under the Procurement Act 2023, the DPS mechanism has been renamed "Dynamic Markets" for new procurements. The concept is unchanged: an open-enrollment system where qualifying suppliers are admitted on an ongoing basis and buyers call off through a competitive process within the system. For practical purposes, you will still encounter the term DPS for systems established before the Act came into force in February 2025.
How DPS differs from a traditional framework
The key distinction between a DPS and a traditional framework is open enrollment. A framework is a closed list: the application window opens once, the buyer selects a fixed panel of suppliers, and latecomers cannot join until the framework is refreshed (typically every two to four years). A DPS is always open: if you meet the criteria today, you can join today, regardless of when the DPS was established. This makes DPS significantly more accessible for growing SMEs that may not have had the track record to qualify when the system was first set up.
The tradeoff is that DPS is more competitive: new entrants join continuously, so the buyer always has a fresh choice of suppliers. Price competitiveness in mini-competitions tends to be higher than in framework call-offs because the pool of eligible suppliers is larger and less fixed.
Common DPS categories in UK public sector
Social care: Domiciliary care, residential care, supported living, and day services are the most widespread DPS use case in UK local government. Councils use social care DPS to manage a large and shifting pool of approved providers rather than a fixed panel. CPV code 85300000 (social work services) and 85312000 (domiciliary services) cover most of this activity.
Cleaning and facilities management: Some councils and housing associations run FM DPS schemes for below-threshold cleaning, grounds maintenance, and building maintenance. CPV code 90910000 (cleaning services) and 90900000 (cleaning and sanitation services).
IT hardware, software, and services: Technology DPS schemes are increasingly common for commodity IT procurement. CPV codes 48000000 (software packages) and 30200000 (computer equipment).
Construction and maintenance: Some housing associations and councils run maintenance DPS schemes for reactive repairs, void works, and planned maintenance lots by geography and trade. CPV codes 45000000 (construction work) and 50700000 (maintenance of building installations).
Temporary staffing: Agency staff and interim manager procurement is frequently managed through DPS because the pool of qualifying agencies and supply conditions change regularly. CPV code 79620000 (supply of personnel services).
How to find and join a DPS
DPS procurement notices appear on Find a Tender (for above-threshold systems), Contracts Finder (England, below threshold), and buyer portals. The initial DPS setup notice invites expressions of interest from qualifying suppliers, and subsequent notices admit further suppliers on an ongoing basis. You apply by submitting the admission criteria -- typically a Selection Questionnaire covering financial standing, insurance, technical capability, and relevant accreditations. Most DPS systems admit compliant suppliers within 15 working days of application submission.
TenderSignal monitors DPS setup notices and open enrollment notices across all UK procurement sources. When a relevant DPS opens for new supplier admissions in your category, a notice appears in your daily matched digest so you can apply before the next mini-competition runs.
How to win work through a DPS
Being admitted to a DPS is a prerequisite; winning mini-competitions within it requires a different approach to an open tender. Price competitiveness matters more than in a traditional framework because the buyer has a larger pool of admitted suppliers and can compare directly. Response times to mini-competition invitations are typically short (five to ten working days), so having a ready library of case studies, method statements, and pricing models speeds up your response. Social value weighting in social care DPS mini-competitions is often significant -- buyers award contracts to providers with strong local employment and community involvement records.
Repeat performance matters more in a DPS than in an open market, because buyers can see which admitted suppliers have delivered well in previous mini-competitions. Strong delivery on early contracts builds a track record within the system that influences subsequent award decisions.
DPS vs open market tendering: which to prioritise?
DPS and open market tendering serve different strategic purposes. A DPS gives ongoing access to a buyer or group of buyers without re-competing the qualification each time, at the cost of higher price competition in each mini-competition. An open market tender offers larger individual contracts and more scope to differentiate on quality, at the cost of a full tender response for each opportunity. Most successful SMEs use both: DPS for recurring volume in categories where they want a consistent pipeline, and open market for larger strategic contracts. TenderSignal monitors both simultaneously so you never miss a DPS open enrollment or an open market tender in your categories.