Performance Bonds: What UK SMEs Should Know Before Signing With Towergate

If you’re a UK SME bidding for larger projects, you’ll eventually hit a familiar line in a contract pack: “Provide a performance bond.”

It can feel like a make-or-break moment. You’ve got the capability to deliver, but the paperwork (and the potential financial exposure) suddenly ramps up.

This guide breaks down what performance bonds are, how performance bonds arranged via Towergate commonly fit into UK projects, and what you should check before you sign anything - so you can move forward confidently, not cautiously.

Note: This article is general information, not financial, insurance or legal advice. Performance bond terms vary widely and you should take advice on your specific contract and bond wording.

What Is A Performance Bond (In Plain English)?

A performance bond is a type of financial security used in commercial projects. If you (as the supplier/contractor) don’t meet your contractual obligations, the beneficiary (usually the customer/employer) may be able to claim money under the bond - up to a specified amount.

In most UK SME contexts, the bond is linked to a specific contract (for example, construction works, installation services, IT delivery, or manufacturing supply). The aim is to reduce the customer’s risk of you failing to perform.

Who Are The Parties To A Performance Bond?

• You (the contractor/supplier): the party whose performance is being secured.
• The beneficiary (often the employer/client): the party who can claim under the bond if things go wrong.
• The surety/issuer (often an insurer or specialist provider): the party issuing the bond and potentially paying out on a valid claim.

Even though the bond is “for” your customer, the commercial reality is that it’s linked to your risk. Depending on the arrangements, you may also be asked to sign an indemnity in favour of the issuer (so that if the issuer pays out, it can seek reimbursement from you).

Is A Performance Bond The Same As A Guarantee?

They’re related, but not the same in practice. A guarantee often involves a third party (like a director or parent company) promising to cover losses. A performance bond is typically issued by a financial provider and operates on the bond’s specific wording.

Also, performance bonds can be drafted in different ways (which matters a lot for your risk).

Why Are Customers Asking SMEs For Performance Bonds?

Performance bonds are usually requested when:

• the contract value is high (relative to your business size);
• the project is business-critical for the customer (delays would be expensive);
• there’s a long delivery timeline (so the customer wants reassurance);
• you’re working in a regulated or safety-critical environment; or
• the customer is required by their own funders to put risk protections in place.

From your customer’s perspective, a bond is a comfort blanket: “If this goes wrong, we have a route to recover money.”

From your perspective as an SME, it’s a credit and risk question: “Can we accept this obligation without putting cashflow (or the entire business) under pressure?”

Common Scenarios Where Bonds Show Up

We often see performance bonds in:

• Construction and fit-outs (including subcontractor chains)
• Mechanical/electrical installation projects
• Facilities and maintenance contracts
• Public sector procurement (or contracts flowing down from it)
• Large corporate supply arrangements

If you’re stepping up from smaller jobs into “proper” contract packs, being asked for a bond doesn’t automatically mean anything is wrong - it often just means the client’s procurement team is doing what they always do.

How Performance Bonds Arranged Through Towergate Typically Work (And What SMEs Should Watch For)

If you’re arranging a performance bond through Towergate, you’ll usually go through an underwriting process where the relevant insurer/surety assesses your business risk. That might include reviewing financials, project details, and your track record.

The key point for SMEs: the bond document and any indemnity paperwork behind it can create real, long-term exposure - and it’s not always obvious from the first email thread.

How Much Is The Bond Usually For?

A common range is 10% to 20% of the contract value, but it varies. Sometimes it’s a fixed amount. Sometimes it scales depending on milestones.

That figure matters because it’s the “headline” exposure - but your real exposure can be bigger if the indemnity you sign is broad, or if the contract contains uncapped liabilities elsewhere.

This is where it helps to check your contract risk position holistically, including any Limitation of liability clause you’ve agreed (or failed to agree).

“On-Demand” vs “Conditional” Bonds (Why The Wording Is Everything)

Performance bonds often fall into two practical categories:

• On-demand: the beneficiary can demand payment in line with the bond terms, and depending on the drafting may not need to prove breach in court before a demand is made.
• Conditional: payment is linked to demonstrating a breach or loss, or meeting defined conditions.

For SMEs, this distinction is critical. An on-demand style bond can create a cashflow crisis if a dispute arises - even if you believe you’ve done nothing wrong - because the claim process can move faster than a court dispute.

You don’t need to become a bond expert overnight, but you do want a lawyer to sanity-check the wording and explain what triggers a valid claim in practice.

What Documents Are You Actually “Signing Up” To?

When SMEs talk about “signing the bond”, there are usually multiple moving parts:

• the underlying contract (where the bond is required);
• the bond instrument itself (what the beneficiary receives); and
• any indemnity or counter-indemnity you give to the issuer.

It’s possible to negotiate the underlying contract but overlook the bond wording - or to accept a bond/indemnity quickly because “the project has to start Monday”. That’s where SMEs can get caught.

What Should You Check In The Contract Before You Agree To A Performance Bond?

A performance bond doesn’t sit in isolation. It’s tied to what the contract says you must do, by when, and what counts as a failure.

Before you proceed, it’s worth checking (at minimum) the following contract points.

1) The Scope: What Exactly Are You Promising To Deliver?

If the scope is vague, the risk of disputes (and bond calls) goes up. Make sure:

• the specifications are clear and final;
• variation/change control is documented;
• dependencies are stated (e.g. client providing access, information, approvals); and
• acceptance and sign-off steps are clear.

Vague scope is one of the most common reasons a project relationship breaks down - and bond requirements can magnify the financial consequences.

2) Time And Milestones: Are You Exposed To Delay Claims?

Check whether the contract contains:

• fixed completion dates with strict “time is of the essence” language;
• liquidated damages (LDs) for delay;
• unclear extension-of-time rights; or
• penalties disguised as “service credits”.

If delay triggers significant remedies, the customer may be quicker to make a bond claim during a dispute. If your timeline depends on factors outside your control, make sure the contract reflects that.

3) Termination: When Can The Customer End The Contract?

Termination rights are closely tied to bond risk. If the contract allows termination for minor breaches (or very short remedy periods), you could face a bond call even where the project is still salvageable.

Also check what happens after termination - for example, do you have to refund payments, hand over work-in-progress, or cover re-procurement costs?

4) Notice Requirements: How Must Disputes And Claims Be Raised?

Some contracts require formal notice within strict timeframes. Others accept notice by email. Many SMEs assume email is always “good enough”, but that’s not always true.

It’s worth understanding how contractual notices work, especially if your day-to-day project management happens in email threads and WhatsApp messages. If you need clarity on this, Email contracts is a good starting point to understand how “written” communications can create legal effects.

5) Liability Position: Are You Taking On Too Much Risk For Your Margin?

Before agreeing to a performance bond, ask yourself:

• Is liability capped, and is the cap realistic?
• Are indirect losses excluded (where appropriate)?
• Do you have broad indemnities that effectively make you the insurer?
• Does the contract require you to hold insurance you don’t actually have?

A bond can become the “easy button” for a client if your contract already gives them broad remedies. If your contract is unbalanced, the bond can make that imbalance more dangerous.

Practical Steps UK SMEs Should Take Before Signing A Performance Bond Through Towergate

If you’re close to award stage and the bond is now a condition of signing, you don’t need to panic - but you do want to slow down enough to protect your business properly.

Step 1: Confirm Who Has Authority To Sign

This sounds basic, but it’s a real risk area for SMEs. You should be clear on:

• who within your business can sign the contract;
• who can sign bond/indemnity documentation; and
• whether board approval is needed (for companies).

If someone signs without proper authority, it can create internal disputes and external uncertainty - at the worst possible time (mid-project). If you ever need someone to sign on behalf of another person, make sure you understand Signing authority in a way that’s compliant and defensible.

Step 2: Treat The Bond As Part Of The Deal (Not Just Admin)

A common SME mistake is treating the bond as a separate “insurance formality”. In reality, it’s part of the commercial bargain. If a bond is required, you may be able to negotiate:

• a lower bond percentage;
• a shorter bond duration (e.g. expires at practical completion);
• clearer claim conditions (conditional vs on-demand style);
• release mechanisms (automatic reduction as milestones are met); or
• limits on when a bond can be called (e.g. only after specific dispute steps).

Even small drafting changes can make a big difference if a project later becomes contentious.

Step 3: Check Whether The Bond Needs To Be Executed As A Deed

Some bond documents are executed as deeds, which can affect formalities like witnessing and signing blocks. Getting this wrong can cause delays (or arguments about enforceability) right when you need the paperwork to be watertight.

If the document is intended to be a deed, it’s worth following Executing deeds guidance so it’s signed properly and your project doesn’t stall at the starting line.

Step 4: Align Your Project Management With The Contract (So You Don’t Accidentally Breach)

Once a bond is in place, “small” contract issues can become expensive quickly.

Practical risk-control steps include:

• keeping written records of instructions and variations;
• sending formal notices when required (not just informal updates);
• documenting acceptance/sign-off points; and
• tracking deadlines and dependency items.

This isn’t about being overly legalistic - it’s about making sure that if a dispute arises, you can demonstrate you’ve complied with the contract and acted reasonably.

Step 5: Have A Plan If Things Go Wrong

Most projects don’t end in disputes. But when they do, the speed of response matters - especially if there’s a risk of a bond being called.

It helps to have a clear internal process for:

• escalating issues early (before they become termination threats);
• responding to alleged breach notices;
• gathering evidence (emails, site records, delivery notes); and
• sending a firm but professional response.

If you need to put the other side on notice that you dispute an allegation (or you want to claim against them), a properly drafted Letter before action can be an important step in protecting your position and showing you’re handling the issue seriously.

Step 6: Watch For “Side Promises” That Create Extra Obligations

SMEs often do the right thing commercially - you reassure the client, you agree to “make it right”, you promise a timeline over the phone.

The problem is that side promises can accidentally create new legal obligations, or be used as evidence against you later. Be careful with:

• admissions of fault before you’ve investigated;
• agreeing to pay costs without written agreement on scope;
• promising revised completion dates without formal variation; and
• agreeing to “we’ll cover it” language.

In some situations, businesses also use formal commitments in writing. If that’s on the table, make sure you understand what a Legal undertaking can mean in practice - because it can carry serious consequences if you can’t comply.

Key Takeaways

• Performance bonds are a form of security that can allow a client to claim money if you don’t perform your contract - and they can materially increase your project risk as an SME.
• Where a performance bond is arranged via Towergate, the wording still matters: the difference between an on-demand style bond and a conditional bond can be huge for cashflow and dispute leverage.
• Don’t assess the bond in isolation - check the underlying contract scope, milestones, termination rights, notice requirements, and liability allocation so you understand what could trigger a claim.
• Before signing, confirm signing authority internally, and ensure any deed formalities (like witnessing) are done properly to avoid delays and enforceability issues.
• Good project admin isn’t “extra paperwork” - it’s one of the best ways to reduce the chance of disputes and protect your position if a bond call is threatened.
• If you’re unsure, it’s worth getting legal advice early. A quick review before signing is usually far cheaper than trying to unwind risk once a project is already underway.

If you’d like help reviewing a contract that requires a performance bond, or you’re about to sign performance bond documentation arranged through Towergate and want to understand the risks, you can reach us at 08081347754 or team@sprintlaw.co.uk for a free, no-obligations chat.