Dynamic Purchasing Systems do not get talked about as much as frameworks, but they can be a genuinely useful route into public sector work for smaller businesses. This Q&A guide cuts through the confusion and answers the questions that SME owners most often ask.
The Basics
What exactly is a Dynamic Purchasing System?
A Dynamic Purchasing System, usually shortened to DPS, is a procurement tool that a buyer (such as a council, NHS trust, or government department) sets up to purchase a category of goods or services over a period of time. Think of it as an approved supplier list, but one that is always open for new suppliers to join.
Once a buyer has set up a DPS, any supplier that meets the minimum requirements can apply to join at any point during its life. This is fundamentally different from a framework agreement, which typically closes to new applicants once the initial competition is complete.
How is a DPS different from a framework agreement?
This is the most common source of confusion. Here is a side-by-side comparison:
- Framework: A closed panel. Applications are only accepted during the initial tender window. Miss that window and you wait for the framework to be re-tendered, which could be years away.
- DPS: An open panel. You can apply to join at any time while the DPS is live. If you become capable of meeting the requirements next month, you can apply next month.
Both tools allow the buyer to run competitions among approved suppliers when an actual contract opportunity arises. The key difference is accessibility.
Who sets up Dynamic Purchasing Systems?
Central government departments, NHS bodies, local authorities, universities, housing associations, and other public sector organisations all use DPS. Some are set up by central purchasing bodies that other buyers can access too — meaning one DPS application can open doors to contracts from many different organisations.
Joining a DPS
How do I apply to join?
The buyer publishes a contract notice when they set up the DPS, usually on Find a Tender or Contracts Finder. The notice explains what category of supply the DPS covers and sets out the minimum qualification criteria. You submit an application — similar in style to a Selection Questionnaire — demonstrating that you meet those criteria.
If your application is accepted, you are admitted to the DPS and can then compete for individual contracts as the buyer issues them. If your application is rejected, the buyer must tell you why, and you can address the issue and reapply.
What do applications typically ask for?
- Basic company information and financial standing
- Relevant experience and case studies
- Insurance certificates
- Any sector-specific accreditations or qualifications
- Confirmation of legal compliance (tax, exclusion grounds)
The exact requirements depend on the category. A DPS for cleaning services will ask different questions from one covering IT consultancy.
Is there a fee to join?
No. Public sector buyers cannot charge suppliers to join a DPS or participate in any public procurement process.
Winning Work Through a DPS
How do buyers award contracts within a DPS?
When a buyer wants to purchase something covered by the DPS, they run a mini-competition among the admitted suppliers. They issue the specification and ask for bids or quotes. Suppliers respond, and the buyer awards the contract to the best bid — usually evaluated on a combination of price and quality.
Mini-competitions can range from a simple price quote to a detailed written tender, depending on the size and complexity of the contract.
Being on a DPS does not guarantee you any work. It simply puts you in the pool to be invited to compete. You still need to submit strong bids when the invitations arrive.
Will I be invited to every mini-competition?
This varies. Some buyers invite all admitted suppliers to every mini-competition. Others filter by factors such as geographic area, lot category, or supplier size. Read the DPS documentation carefully — it will explain how the buyer intends to run competitions within the system.
Why DPS Can Be Good for Small Businesses
What makes DPS particularly useful for SMEs?
Several features make DPS genuinely SME-friendly:
- No deadline to miss: Because you can join at any time, you do not lose out simply because you were not ready when the system launched.
- Lower barrier to entry: The initial application is usually lighter than a full tender. You are proving capability, not winning a specific contract.
- Multiple opportunities: Once admitted, you can bid for any number of mini-competitions during the life of the DPS.
- Transparency: Mini-competition results are published, so you can learn from bids you lose and improve over time.
If you are also exploring frameworks as a route to market, our guide on framework agreements for SMEs explains how the two approaches compare in more depth.
Practical Steps to Get Started
If you think a DPS could be right for your business, here is where to begin:
- Search Find a Tender and Contracts Finder for active DPS opportunities in your sector (look for notices labelled "dynamic purchasing system").
- Read the qualification criteria before applying — check your business meets the minimums on turnover and experience.
- Prepare your standard application documents: accounts, insurance, case studies. These can be reused across multiple DPS applications.
- Submit your application through the buyer's procurement portal, following their instructions precisely.
- Once admitted, set up alerts so you are notified when mini-competitions are issued.
Always check the buyer's published DPS documentation for the exact rules and timelines that apply. Processes differ between buyers and the guidance on GOV.UK is updated periodically to reflect changes in procurement law.
