What is public procurement, and which rules apply?
Short answer
Public procurement is the buying of works, goods and services by public bodies under procurement law, which decides who must compete, which procedure applies and how bidders can challenge.
Key takeaways
- Public procurement is buying by public bodies under procurement law. The law decides who must follow the rules, which procedure applies, what is published and how a losing bidder can challenge.
- It covers more than government departments: in the EU, any body set up for the general interest and mainly publicly funded or controlled; in the UK, publicly funded or publicly overseen bodies that do not operate commercially; utilities have their own rules in both.
- There is no single public procurement law. The EU directives, the UK Procurement Act 2023, the US Federal Acquisition Regulation, state laws and national laws built on the UNCITRAL Model Law each set their own procedures and thresholds.
- Every system starts from open competition and allows exceptions only in listed cases, such as extreme urgency or a single possible supplier, with the reasons written down.
- Losing bidders can challenge: a standstill period before signature in the EU and the UK, bid protests at the US Government Accountability Office.
What does public procurement mean?
Public procurement is the purchase of works, goods and services by public bodies from companies, under rules set by law. The law decides which bodies must follow it, when a purchase must be advertised and competed, which procedure the buyer may use, how the winner is chosen, and how a losing bidder can challenge the decision.
The EU directive gives a legal definition: procurement is “the acquisition by means of a public contract of works, supplies or services by one or more contracting authorities from economic operators chosen by those contracting authorities, whether or not the works, supplies or services are intended for a public purpose.” Three ideas sit in that sentence. The buyer is a public body (a contracting authority). The purchase is made through a contract with a company (a public contract). And the supplier is chosen under the law, not freely.
A regional hospital that needs new beds shows what changes. A private clinic can ask two suppliers it knows for prices and sign with the cheaper one. The public hospital, if the value is above the legal threshold, must publish a notice, let any qualified supplier bid, judge the bids against criteria announced in advance, tell the losers why they lost, and wait before signing. The stakes explain the strictness: across OECD countries, public procurement represented 12.7% of GDP in 2023, according to the OECD.
Who has to follow public procurement rules?
Public procurement rules apply to public buyers, and each system defines them in its own way. The definition is wider than “government”: it can reach publicly funded agencies, some hospitals and universities, and water, energy and transport companies buying for their utility activity.
| System | Name of the public buyer | Who it covers |
|---|---|---|
| EU (Directive 2014/24/EU, Article 2) | Contracting authority | The State, regional and local authorities, bodies governed by public law, and associations of them. A body governed by public law meets the general interest without an industrial or commercial character, has legal personality, and is mainly financed, supervised or appointed by public authorities |
| EU utilities (Directive 2014/25/EU) | Contracting entity | Bodies in water, energy, transport and postal services, under separate, more flexible rules |
| UK (Procurement Act 2023, section 2) | Contracting authority | Public authorities: bodies wholly or mainly funded out of public funds, or under public authority oversight, that do not operate on a commercial basis; for utilities contracts, also public undertakings and private utilities. Devolved Scottish authorities are excluded and follow Scottish rules |
| US federal (FAR) | Executive agency | Federal executive agencies buying with appropriated funds; the FAR calls this acquisition |
| US states and local governments | Set by each state | State agencies, counties, cities and school districts under state law; when they spend federal grants, the federal Uniform Guidance (2 CFR 200) adds rules |
| UNCITRAL Model Law (2011) | Procuring entity | Defined by each country that bases its law on the Model Law |
Before applying any procedure, check that the buyer is covered. A state-owned company that operates commercially may sit outside the rules; a private water company buying for its network may sit inside them.
Is public sector procurement the same as government procurement?
Public sector procurement, public procurement and government procurement describe the same activity, with a difference of scope. Public sector procurement and public procurement cover every public buyer the law defines, including hospitals, agencies and utilities. Government procurement usually means buying by ministries, agencies and local governments.
The words also follow the country. “Public procurement” is the legal term in the EU directives and in UK law. US federal law speaks of acquisition and contracting, and “government procurement” or “government contracting” is the everyday term. How governments buy in practice, step by step, with the size of their spending, their principles and fraud controls, is explained in the government procurement guide. This page covers the legal frame: who must follow the rules, which rules, and which procedures they allow.
Which laws govern public procurement?
There is no single public procurement law. Rules come in layers: international agreements, regional law in the EU, national law, then each buyer’s own procedures. The table names the main texts, as primary sources call them.
| Framework | Type | Who it binds | What it does |
|---|---|---|---|
| WTO Agreement on Government Procurement (GPA 2012) | International treaty, plurilateral | Its 22 parties, covering 49 WTO members, for the entities and purchases listed in their schedules | Opens covered purchases above set thresholds to suppliers from the other parties |
| UNCITRAL Model Law on Public Procurement (2011) | Model law, not binding | No one directly; countries copy or adapt it into national law (26 States so far, according to UNCITRAL) | Gives a full set of procedures and principles, with open tendering as the default method |
| EU Directives 2014/24/EU (public sector), 2014/25/EU (utilities), 2014/23/EU (concessions), and the remedies directives | Regional law, transposed into each member state’s law | Contracting authorities and entities in the 27 member states, above the EU thresholds | Sets the procedures, publication in the EU Official Journal, award criteria and the right to a fast review |
| UK Procurement Act 2023, in force since 24 February 2025, with the Procurement Regulations 2024 | National law | Contracting authorities in England, Wales and Northern Ireland, and UK-wide bodies; Scotland keeps the Public Contracts (Scotland) Regulations 2015 for devolved Scottish authorities | Sets the open and competitive flexible procedures, direct award cases, publication on the Central Digital Platform and the standstill |
| US Federal Acquisition Regulation (FAR) | National regulation | Federal executive agencies | Requires full and open competition, with sealed bidding, negotiated proposals and simplified procedures; being rewritten under the 2025 FAR overhaul |
| State procurement codes and the Uniform Guidance (2 CFR 200.317–200.327) | State law and federal grant rules | State and local governments; federal grant recipients | Each state sets its own procedures and limits; the Uniform Guidance applies when federal grant money is spent |
Name the framework that applies before naming a procedure: an “open procedure” in the EU, an “open procedure” in the UK and “sealed bidding” in the US are close, but their time limits and conditions differ.
Each framework applies in full only above value thresholds: from 1 January 2026, €140,000 for EU central government supplies and services and £135,018 under the UK Act. Below them, national rules still apply, usually lighter ones; in the EU they must respect the general principles of EU law. The government procurement guide lists the thresholds of each system.
Which procedures can a public buyer use?
Every system starts from open competition and lets the buyer limit or negotiate only under conditions. The names differ, but the families are the same: open, restricted, negotiated or dialogue-based, simplified for low values, and direct award in listed cases.
| Family | EU (Directive 2014/24/EU) | UK (Procurement Act 2023) | US federal (FAR) | UNCITRAL Model Law (2011) |
|---|---|---|---|---|
| Open: any supplier may bid | Open procedure | Open procedure (single stage, no restriction on who bids) | Sealed bidding | Open tendering, the default method |
| Restricted: only selected suppliers bid | Restricted procedure | Competitive flexible procedure designed with a selection stage | Two-step sealed bidding: only offerors whose technical proposals are acceptable submit prices | Restricted tendering, when few suppliers exist or evaluating many bids would cost too much |
| Negotiation or dialogue | Competitive procedure with negotiation, competitive dialogue, innovation partnership, only on stated grounds | Competitive flexible procedure designed by the buyer | Competitive proposals with discussions | Two-stage tendering; request for proposals with dialogue or with consecutive negotiations; competitive negotiations |
| Low value and simple purchases | Below EU thresholds: national rules | Below UK thresholds: lighter rules | Simplified acquisition procedures (FAR Part 13) | Request for quotations |
| No competition | Negotiated procedure without prior publication: no suitable tenders, a single possible supplier, extreme unforeseeable urgency | Direct award under Schedule 5: single suppliers, prototypes, repeat purchases, extreme and unavoidable urgency, among others | Other than full and open competition (FAR 6.302): only one responsible source, unusual and compelling urgency, among others | Single-source procurement, with the reasons recorded |
The exception routes are narrow everywhere and must be justified in writing. A buyer who uses one because the timetable slipped will have trouble defending it.
Two other tools sit beside these procedures. Framework agreements let one competition set the terms for later orders, called call-offs: the EU, UK and UNCITRAL texts provide for them, and in US federal buying indefinite-delivery contracts and GSA schedules play a similar role. Electronic reverse auctions, where bidders lower their prices online, are allowed under conditions in the EU, US and UNCITRAL texts; the reverse auction guide sets out those conditions. Many public competitions run in e-sourcing and e-tendering systems.
What are the steps of a public procurement process?
A public procurement process follows the legal checkpoints in order: estimate the total value (never splitting a need to stay under a threshold), confirm the buyer and the purchase are covered, choose the procedure and record why, publish the notice, evaluate only against the published criteria, announce the award with reasons, wait out the standstill, then sign and manage the contract. Each checkpoint leaves a record that a review body can examine later. The government procurement guide details each step with time limits; after signature, government contract management software tracks delivery, changes and performance reporting.
How would one purchase run under different rules?
Take a fictional public hospital that wants a new patient records system worth about 2 million in local currency, with configuration and five years of support. The need is the same everywhere; the legal route is not. The outline shows a likely route under each system, not legal advice for a specific case. In practice, the hospital would first check whether a central purchasing body or an existing framework already covers the need; the routes below assume none does.
- An EU member state
- The value is above the €216,000 sub-central threshold. Because the system needs adapting to the hospital, the competitive procedure with negotiation or competitive dialogue may be justified on the grounds in Article 26(4); otherwise the open or restricted procedure applies. The notice goes to the EU Official Journal, the award goes to the most economically advantageous tender, and the contract cannot be signed until at least 10 days after the award decision is sent electronically.
- England
- A public hospital is a contracting authority under the Procurement Act 2023. It can design a competitive flexible procedure, for example with a selection stage, a negotiation round and a final tender. The tender notice is published on the Central Digital Platform, and a standstill of eight working days follows the contract award notice.
- A US federal hospital
- A hospital run by a federal agency buys under the FAR. Full and open competition is required; a complex system is usually bought by competitive proposals with discussions, after a notice on SAM.gov. A losing offeror can protest to the Government Accountability Office, which decides within 100 days. The FAR text the agency applies may already follow the 2025 overhaul.
- A country whose law follows the UNCITRAL Model Law
- Open tendering is the default. A complex system with unclear specifications could justify two-stage tendering or a request for proposals with dialogue, and the record must state the reasons for choosing a method other than open tendering.
The pattern is the same in all four: competition by default, a route to negotiate when the need is complex, publication, criteria fixed in advance, and written reasons. A supplier that knows the pattern can read a tender anywhere; a buyer still has to apply the exact text of its own law.
How can a supplier challenge a public procurement decision?
A supplier that believes the rules were broken can ask for a review, and each system gives it a window to act before the contract is signed. That window makes the rules enforceable: a challenge after signature rarely gets the contract back.
- In the EU, the remedies directives require a standstill of at least 10 calendar days between sending the award decision electronically and signing the contract, and access to a fast review by a national review body or court.
- In the UK, the Procurement Act 2023 imposes a standstill of eight working days from the contract award notice, except for call-offs under a framework, and challenges go to the courts.
- In the US federal system, a bid protest can be filed with the agency, the Government Accountability Office or the Court of Federal Claims; GAO decides protests within 100 days.
Most challenges turn on the same points: criteria changed after bids arrived, a bidder treated differently, a score that does not match the published method, or a direct award without a valid reason. Records kept at each step are the buyer’s defence. For a specific dispute, consult a procurement lawyer in the country concerned.
Where can you go deeper on public procurement?
This page is the entry to the site’s public procurement guides. Government procurement explains how governments buy in practice, step by step. E-sourcing covers how online tools publish tenders and keep bids sealed. OCDS explains how tenders, awards and contracts are published as open data. Government contract management software covers the contract after the award, and the procurement certification guide the public procurement qualifications. A guide to government procurement software is in preparation.
Questions
What is a contracting authority?
A contracting authority is a public buyer that must follow procurement law. In the EU it is the State, regional or local authorities, bodies governed by public law and their associations. In the UK it is a public authority, meaning a body mainly funded by public money or under public oversight that does not operate commercially.
Does public procurement law apply below the thresholds?
Yes, in a lighter form. The EU directives and the UK Act apply in full only above their thresholds, but national rules cover smaller purchases, and in the EU they must respect the general principles of EU law. Buyers usually require a few written quotes or a simpler notice, and must never split a purchase to stay under a threshold.
Do state-owned companies have to follow public procurement rules?
It depends on what they do and how. In the EU, a state-owned body that meets general-interest needs without an industrial or commercial character is a body governed by public law and is covered. One that operates commercially may not be, unless it runs a utility activity, where utilities rules apply.
Is the UNCITRAL Model Law binding?
No. The UNCITRAL Model Law on Public Procurement, adopted in 2011, is a model that countries can copy or adapt into their own law. According to UNCITRAL, legislation based on or influenced by it has been adopted in 26 States, including Ghana, India, Kenya and Mexico. It binds buyers only through the national law that uses it.
Does the UK Procurement Act 2023 apply in Scotland?
Not to devolved Scottish authorities, such as Scottish councils and most Scottish public bodies. The Act excludes them, and they continue to follow the Public Contracts (Scotland) Regulations 2015. UK-wide bodies that operate in Scotland fall under the Act.
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