What Is a Dynamic Purchasing System (DPS)? A Complete Guide for Suppliers

A Dynamic Purchasing System is one of the most flexible — and most underused — tools in public procurement. Yet for many suppliers, it remains a mystery.

Unlike a framework agreement, a DPS stays open to new suppliers throughout its entire lifespan. That means you can join today, even if the system launched two years ago. And once you're in, you're eligible to bid on every contract that comes through it.

For suppliers who feel locked out of traditional frameworks, a DPS is one of the best routes into public sector business. For buyers, it provides a continually refreshed supplier pool that keeps pace with the market.

This guide explains exactly what a DPS is, how it differs from other procurement procedures, and what you need to do as a supplier to get in — and win.

In this guide, you'll learn:

• What a Dynamic Purchasing System is and how it works

• How it differs from a framework agreement

• What types of contracts run through a DPS

• How to join one — and what to prepare

• How to win mini-competitions once you're in

What Is a Dynamic Purchasing System?

A Dynamic Purchasing System is a fully electronic, open-ended procurement tool used by public sector buyers to purchase commonly used goods, works, or services. It is governed by EU procurement regulations (Directive 2014/24/EU) and national equivalents such as the PCR 2015 in the UK.

The key word is dynamic. Unlike a framework agreement, which closes to new entrants once awarded, a DPS remains permanently open to new suppliers for its entire duration. Any supplier who meets the qualification criteria can apply at any time — day one or day 1,000.

Key Characteristics of a DPS

• Always open: New suppliers can apply to join at any point during the system's life

• Fully electronic: All stages — from application to award — must be conducted electronically

• Category-based: Buyers divide the DPS into lots, each covering a specific type of product or service

• No cap on suppliers: There is no limit to how many suppliers can be admitted

• No guaranteed spend: Being on a DPS gives you the right to bid — not a guarantee of contracts

• No maximum duration: A DPS has no fixed lifespan (unlike a framework, which is capped at 4 years)

Once accepted onto the system, you are invited to submit bids whenever the buyer runs a specific competition within your category. These mini-competitions follow a simplified process — faster than a full open procedure but just as competitive.

How Does a DPS Work? Step by Step

Understanding the mechanics helps you use a DPS strategically — both to get on it and to win business through it.

Stage 1: The Buyer Establishes the DPS

The contracting authority publishes a contract notice to launch the system. This defines:

• The categories of goods, services, or works covered

• The qualification criteria suppliers must meet

• The estimated total value

• The duration (which can be indefinite)

This is the moment you want to be watching. Use a tender monitoring solution to catch DPS launches in your sector before they fill up with established competitors.

Stage 2: Suppliers Apply to Join

Any supplier that meets the qualification criteria — typically verified through a Selection Questionnaire (SQ) or European Single Procurement Document (ESPD) — can apply. The buyer must assess your application within 10 business days and either admit you or explain why you were rejected.

Key criteria typically include:

• Financial standing (turnover thresholds, insurance levels)

• Technical and professional ability (experience, certifications, references)

• Compliance with legal and regulatory requirements

Pro tip: Your DPS application is a standing qualification document. Get your tender preparation pack — insurances, accounts, case studies, certifications — in order before you apply, so the process is fast and clean.

Stage 3: Buyers Run Mini-Competitions

When the buyer needs to make a purchase, they invite all admitted suppliers in the relevant category to submit a bid. Each mini-competition includes:

• A specification of the specific requirement

• Evaluation criteria and weightings (e.g., 60% quality, 40% price)

• A submission deadline — often as short as 10 days

This is where the real work happens. Your application gets you in. Your bid wins you the business.

Stage 4: Contract Award

The buyer evaluates bids and awards a contract to the most economically advantageous tender (MEAT). You'll receive feedback whether you win or lose.

Pro tip: Treat every mini-competition loss as an opportunity. Request debrief feedback from the buyer. Understanding why you scored as you did is one of the fastest ways to increase your win rate over time.

DPS vs Framework Agreement: What's the Difference?

This is the most common question suppliers ask — and for good reason. Both tools pre-qualify suppliers to deliver against recurring public sector needs. But they work very differently.

For a deeper breakdown, see our guide to DPS vs framework agreement: 5 key differences.

The short version: if you've missed the window on a framework, a DPS in the same category is often your best alternative. And because DPS mini-competitions tend to be smaller and faster, they're often a great entry point for SMEs qualifying for public procurement contracts for the first time.

What Types of Contracts Run Through a DPS?

DPS systems are best suited to commonly used, well-defined goods and services where the market evolves quickly and buyers want access to the latest suppliers and innovations.

Common DPS categories include:

• IT hardware and software — laptops, licences, cybersecurity tools

• Professional services — consultancy, legal, HR, training

• Facilities management — cleaning, maintenance, security

• Healthcare supplies — PPE, medical devices, consumables

• Construction and minor works — repairs, maintenance, refurbishments

• Fleet and transport — vehicles, fuel, logistics

• Digital and technology services — cloud, data, development

• Catering and food supply

If your business falls within one of these broad areas, there is almost certainly an active DPS somewhere that you should be on. Finding public tenders that are DPS-based is something a good tender monitoring platform can automate for you.

How to Join a DPS: A Practical Checklist

Getting onto a DPS is typically faster and simpler than applying for a framework agreement. Here's what to prepare.

1. Find the Right DPS

Use Mercell or a similar public purchasing system to search for active DPS systems in your sector and geography. Look for:

• Systems that cover your core service area

• Those with active buyers you already know or want to reach

• New DPS launches where you can get in early, before competition intensifies

2. Review the Qualification Criteria

Each DPS publishes a Selection Questionnaire (SQ) or ESPD specifying what's required. Common requirements include:

• Minimum annual turnover (often 1–2x the estimated contract value)

• Public liability and professional indemnity insurance

• Sector-specific certifications (e.g., ISO 9001, Cyber Essentials)

• Relevant past contracts as references (usually two or three)

3. Submit Your Application Electronically

Applications are made via the relevant eTendering portal. Ensure your submission is:

• Complete — missing documents typically mean automatic disqualification

• Accurate — misrepresentation can lead to permanent removal

• Current — use your latest accounts, certificates, and insurance documents

Pro tip: Build a standard "DPS application pack" with your core documents. Once assembled, joining new systems takes minutes rather than hours. Store it in your bid management system and review it quarterly.

4. Maintain Your Status

Once admitted, keep your qualification documents current. If an insurance certificate expires or an accreditation lapses, you risk suspension — just as mini-competitions start flowing.

Set calendar reminders for all renewals. This is part of managing your public procurement position effectively over time.

How to Win Mini-Competitions on a DPS

Being admitted is the start. Winning is the goal. Mini-competitions on a DPS move fast — deadlines can be as short as 10 days — so preparation is everything.

Build Bid Templates in Advance

Most mini-competitions in a given DPS category ask similar questions around methodology, team composition, pricing, and relevant experience. Build reusable response templates that you can adapt quickly, so you're never writing from scratch under pressure. This is what separates suppliers with a repeatable bid process from those who scramble every time.

Be Selective — But Respond to Everything

Not every invitation warrants a full response. Use a clear bid/no-bid framework to assess each opportunity quickly: Is the scope right? Is the margin viable? Do you have the capacity?

That said, respond to every invitation — even with a polite decline. A pattern of complete non-responses can sometimes lead to removal from a DPS category.

Price Strategically

DPS mini-competitions almost always include price as an evaluation criterion. Understand the market rate, know your cost base, and price to win — not just to participate. Use market intelligence to benchmark where you sit competitively.

Tailor Every Response

Even in a short-turnaround bid, the winning responses are tailored. Use the buyer's language, reference their specific context, and show you understand their constraints. Generic bids lose, even on a DPS. Read our guide to writing winning bids for the full playbook.

How Mercell Helps You Get the Most From a DPS

A Dynamic Purchasing System is only valuable if you know it exists, stay active on it, and respond to opportunities quickly. Mercell is built to help with all three.

With Mercell, you can:

• Discover active DPS systems across Europe, filtered by category, region, and buyer type

• Set instant alerts so you're notified the moment a new mini-competition is published within a system you're part of

• Track upcoming DPS launches so you can apply the moment a new system opens — before it fills with established suppliers

• Manage your qualification documents in one place, with renewal reminders built in

• Access market intelligence to understand how you compare on pricing and track record

DPS systems represent some of the most accessible, fast-moving opportunities in public procurement. Manual searching won't keep pace with them.

Conclusion

A Dynamic Purchasing System gives suppliers ongoing access to public sector contracts — without the closed-door, one-shot nature of traditional framework competitions.

For SMEs, new market entrants, and businesses in fast-moving sectors like technology, healthcare, or professional services, a DPS is often the most practical and rewarding entry point into public sector business.

The key is to find the right systems early, keep your qualification sharp, and treat every mini-competition with the same rigour as a full tender response.