How to Write an Event Supplier Brief: What to Include, With a Worked Example
Ask three caterers for a quote with nothing more than “wedding, 100 guests, June” and you will get three prices that cannot be compared: one assumes a buffet, one a plated three-course dinner with staff, one leaves out the bar entirely. The fix is a short written brief, sent to every supplier in the same category, that describes the event clearly enough for them to quote the same thing. This guide explains what an event supplier brief is, what to put in it, how to adapt it for different suppliers, and how to use the replies to compare quotes fairly. A worked example is included at the end.
What a supplier brief is, and why it saves money
A supplier brief is a one- or two-page document that sets out the facts of your event and exactly what you want a supplier to provide. It is not a contract and it does not need legal language. Its job is to make sure every supplier is answering the same question.
A good brief does three things. It reduces back-and-forth, because suppliers do not need to email you ten questions before quoting. It makes quotes comparable, because each one is built on the same assumptions. And it protects you later, because when a supplier’s final invoice does not match what you agreed, the brief shows what was asked for. Once you choose a supplier, the brief becomes the starting point for the contract; our event supplier contract checklist covers what that contract should then confirm.
The core sections of every brief
Whatever the supplier, start with the same block of event facts. Keep it short and factual.
- Event type and purpose: a wedding reception, a company summer party, a product launch. One sentence on what success looks like, such as “relaxed, guests mingling, not a formal dinner”.
- Date and timings: the event date, guest arrival time, finish time, and the earliest set-up and latest pack-down times the venue allows.
- Venue: name and address, indoor or outdoor, and any known restrictions such as noise limits, no open flames, or a lift that cannot take heavy equipment.
- Guest numbers: the expected number and the likely range. Say when final numbers will be confirmed.
- Audience: ages, any children, and anything relevant such as many guests travelling from abroad or a high proportion of non-drinkers.
- Budget guide: a range for this supplier category. Suppliers can design to a budget far more easily than guess one; without it, some will quote their most expensive package.
- Decision timeline: when you need quotes back and when you will decide.
- Contact: one named person who answers questions and makes decisions.
If you have already set an overall budget, take the category figure from there; our event budget planning guide shows how to split a total across categories.
The supplier-specific section
After the shared facts, add a short section that is specific to each supplier type. This is where most quotes go wrong, so be explicit about what is included and what is not.
Caterers
Service style (canapés, buffet, sharing platters, plated), number of courses, dietary requirements you already know about, whether staff, crockery, linen and the bar are in scope, and what kitchen facilities the venue has.
Entertainment
The type of act, the number and length of sets, the start and finish times, where they will perform, the power available, whether they need to provide sound for speeches, and the music style you want or want to avoid.
Decor and florists
The areas to be decorated (ceremony, tables, entrance), the number of tables, the colour palette and style with two or three reference images, what the venue already provides, and the set-up and removal windows.
Photographers and videographers
Coverage hours, the key moments that must be captured, the number of locations, the deliverables you expect (number of edited photos, film length, turnaround time) and any restrictions at the venue.
Equipment hire
Item list with quantities, delivery and collection times, access details (distance from the vehicle, steps, lifts) and whether you need the supplier to set up and take down.
Questions to ask in the brief
End each brief with the same short list of questions, so the answers arrive in a form you can compare:
- Please itemise the quote, including staff, delivery, VAT and any service charge.
- What is not included that we would need to arrange separately?
- What is your deposit, payment schedule and cancellation policy?
- What do you need from the venue (power, access time, space, water)?
- Do you hold public liability insurance, and can you share the certificate?
- Can you hold the date, and for how long?
Comparing the replies
When quotes come back, put them side by side in a simple table with one row per cost line and one column per supplier. Fill in every row, including the lines a supplier left out, by asking them for the missing figure. Add a row for “not included, we would pay separately” and estimate it. Only then compare the totals.
Price is not the only column. Add rows for how quickly and clearly they replied, whether they asked sensible questions, the insurance and cancellation terms, and how well their past work matches your style. A supplier who read the brief carefully and asked one good question is often a safer choice than the cheapest quote.
Once you have chosen, put the agreed details into your run sheet so the supplier’s arrival, set-up and performance times sit alongside everyone else’s. Our event run sheet guide shows how to build one.
Worked example: a brief for a DJ
Event: 40th birthday party, relaxed and fun; the dance floor should be busy from 21:00.
Date and timings: Saturday 13 June; guests arrive 19:00, music finishes 00:00; venue access from 16:00, clear by 01:00.
Venue: village hall, ground floor, level access from the car park; 13 A sockets only; noise limit after 23:00 at the boundary.
Guests: 80 to 90 adults, aged mostly 30 to 50, a few older relatives.
Budget guide: a set price range for DJ and sound.
Scope: background music 19:00 to 21:00, dance sets 21:00 to 00:00, microphone for two short speeches at 20:30, basic dance floor lighting. Music: 1990s and 2000s pop, some current hits; no heavy techno.
Questions: the six above, plus whether the system can be kept within the noise limit after 23:00.
Reply by: two weeks from today, to one named contact.
That is under 200 words, yet every DJ who replies will be quoting the same hours, the same equipment and the same constraints.
Common mistakes
- Sending a different, half-remembered description to each supplier.
- Leaving out the budget, so quotes range from basic to premium.
- Forgetting venue restrictions, then discovering a quote is unworkable.
- Not stating what is out of scope, so items appear twice or not at all.
- Having several people answer supplier questions with different answers.
FAQs
How many suppliers should I send a brief to?
Three is usually enough per category: it gives you a fair comparison without creating a lot of admin for you or the suppliers.
Should I share my budget?
Yes, as a range. It helps suppliers suggest what is realistic for your money, and it filters out those who cannot work within it.
Can I reuse the same brief later?
Yes. Update it with the final details and attach it to the booking confirmation, so both sides have the same record of what was agreed.
One clear brief, sent to every supplier in the same form, turns a pile of incomparable prices into a fair decision and gives you a written record for the rest of the planning.
