How to Budget for a Corporate Event: UK Step-by-Step
Your finance director needs a number. Your first job is to give them a realistic one, not a wishlist.
Start with your total budget and divide it by your confirmed headcount to get a per-head figure. From there, split that total across the core cost categories: venue, catering, entertainment, AV, branding, transport, staffing, insurance and contingency. Reserve 10–15% as contingency — a common planning rule of thumb. Then track actual quotes against your estimates and adjust before commitments become invoices. These six steps cover how to budget for a corporate event of any size.
Step 1: Agree the objective and the total
The objective shapes every number. A two-hour Christmas drinks reception costs a fraction of a full-day away day with a sit-down dinner. Before you open a spreadsheet, agree with your stakeholders what the event is for, how many people it’s aimed at, and what success looks like.
Once that’s clear, get a headline figure signed off. If the business hasn’t set a budget, give your decision-maker three scenarios: a minimum viable version, a mid-range option and a premium. Most finance leads will pick the middle.
Start this process early. The earlier the budget is signed off, the more booking options you’ll have — and planning well in advance typically means better value from suppliers.
Step 2: Work out your per-head figure
Divide your total by the expected number of attendees. If your guest list is 80 people and your approved budget is £12,000, your per-head ceiling is £150. That’s the number you’ll keep returning to as you price each line item.
One thing to account for: attendance drop-off. For optional work events, the number who actually turn up is often lower than the initial RSVP count. Build your estimates on a realistic attendance figure, not the maximum headcount, or you risk overspending per head. Confirm final numbers with suppliers as early as possible.
Step 3: List every cost category
Most corporate event budgets cover the same core categories. Get every one on the list before you start pricing — missing a line item is the most common reason budgets overrun.
| Category | What’s typically included | Common extras to check |
|---|---|---|
| Venue hire | Main room, basic tables and chairs | AV package, parking, cloakroom staff, overtime |
| Catering and drinks | Buffet, canapes, sit-down dinner | Dietary options, alcohol licence, service charge |
| Entertainment and experiences | Activities, games, hosted content | Presenter fees, setup space, tech requirements |
| AV and tech | PA, screens, lighting | Live streaming, data connectivity |
| Branding and décor | Printed signage, theming | Custom builds, table dressing |
| Transport and accommodation | Coach hire, hotel blocks | Night transfers, early check-in fees |
| Staffing and hosts | Event crew, MC | Overtime, hotel for out-of-town staff |
| Insurance and permissions | Public liability | Alcohol licence, music licence, SIA security |
| Contingency | Reserve for overruns | Typically 10–15% of total |
Two categories consistently catch first-time planners out: AV and venue extras. Many venues quote room hire separately from their AV package; the PA system, screens and lighting can add a significant sum to the headline total. Corkage fees, service charges on catering and overtime also tend to appear on the final invoice rather than the initial quote.
The space your entertainment requires also affects your venue cost. A VR Escape Room needs roughly 2×2 m per team; a driving simulator setup can range from one unit to sixteen depending on your group size. Ask your entertainment supplier for a floor plan requirement before you commit to a venue.
How to budget for a corporate event: a worked example
The table below shows an illustrative percentage split for a 60-person evening event including dinner, entertainment and AV. This is an example planning framework only, not a quote or a market rate. Actual costs vary significantly by supplier, venue, region and specification.
| Category | % of total | At £150 per head (60 guests = £9,000) |
|---|---|---|
| Venue hire | 27% | £2,430 |
| Catering and drinks | 25% | £2,250 |
| Entertainment and experiences | 20% | £1,800 |
| AV and tech | 8% | £720 |
| Branding and décor | 5% | £450 |
| Transport and accommodation | 0% | – (not required for this example) |
| Staffing and hosts | 3% | £270 |
| Insurance and permissions | 2% | £180 |
| Contingency (10%) | 10% | £900 |
| Total | 100% | £9,000 |
Contingency sits alongside the other categories. If you’re working to a fixed total, reduce the other line items proportionally to make room for it.
Step 4: Get comparable quotes
To compare quotes fairly, every supplier needs the same brief. Give each one:
- Date and time (or two or three options if you’re flexible)
- Headcount (confirmed or estimated)
- Venue (or ask whether the supplier offers venue-finding)
- Format (standing reception, seated dinner, away day, conference social)
- What you want included (catering, AV, entertainment, staffing)
- Budget ceiling (being upfront saves rounds of back-and-forth)
Ask each supplier explicitly: what is and isn’t included in this quote? A headline figure means little without knowing whether AV, staffing and travel are part of it.
If you’d prefer one proposal rather than multiple separate quotes, our event management service covers venue sourcing, entertainment, catering and transport coordination end to end — including a free venue finding service as standard.
Step 5: Build the budget proposal for sign-off
A one-page budget proposal answers three questions: what is this event, what will it cost, and what’s the plan if it goes over?
Structure it as:
- Objective — one sentence on what the event achieves and for whom
- Date, venue and format — the basics
- Estimated cost breakdown — the category table from Step 3, with per-head figures
- Total and per-head summary — the number your finance lead will look at first
- Contingency — state the amount and why it’s there
- Decision needed — a clear ask: approve, reduce scope, or increase budget
Keep it to one page. Finance leads read many proposals; brevity signals you’ve thought it through.
Step 6: Track and adjust
Once quotes come in, move from estimates to actuals. A simple spreadsheet with four columns is enough:
| Category | Estimated | Quoted | Paid |
|---|---|---|---|
| Venue hire | £2,700 | £2,900 | |
| Catering and drinks | £2,250 | £2,400 | |
| … |
Check it weekly. When a quoted figure comes in above your estimate, flag it immediately and decide whether to absorb the overage from contingency or reduce spend elsewhere. Don’t wait until after the event to discover the total is over budget.
Where to save without wrecking the event
If the quotes come in over budget, these are the most effective places to trim:
- Shift the date or day. A Friday event typically costs less than a Saturday. Moving a few weeks away from peak periods can free up venue availability and reduce rates.
- Tighten the guest list. Per-head savings compound quickly across catering and entertainment. A smaller, well-looked-after group often has a better time than a large, stretched one.
- Bundle suppliers. One supplier covering entertainment, AV and staffing is usually more cost-effective than three separate ones, and significantly easier to manage on the day.
- Cut late additions. Photo booths, arrival drinks upgrades and printed gifts tend to be added last. Build them into the original budget or leave them out entirely.
What not to cut: venue reliability, professional hosts and AV. These are the things guests notice when they go wrong. If you need to rethink the format rather than just trim the numbers, consider whether a different event format would give you more value at the same budget.
Mistakes that blow budgets
- No contingency. Even with confirmed quotes, last-minute changes, additional dietary requirements and overtime charges accumulate. A 10–15% reserve is a common planning rule of thumb for good reason.
- Forgetting venue extras. Corkage, service charges, AV surcharges and parking can add significantly to a headline venue quote. Always ask for a full cost breakdown before committing.
- Working from the original headcount. Guest lists change. If your caterer is billing per head, confirm whether the contract allows a revision before final numbers are set.
- Leaving insurance too late. Public liability insurance and any licences required (alcohol, entertainment) need to be in place before the event, not after.
- Sending a vague quote request. If different suppliers quote to different specifications, you can’t compare them. Use the same brief for everyone (see Step 4).
Does the 50/30/20 rule apply to events?
No. The 50/30/20 rule is a personal finance framework, popularised by Elizabeth Warren in All Your Worth, that splits take-home income between needs (50%), wants (30%) and savings (20%). It has nothing to do with event budgeting. If you’ve seen it cited in event planning articles, it’s been misapplied.
For events, there’s no universal percentage split that works across all formats, sizes and venues. The worked example above is a useful starting point, but the right allocation for your event depends on your format and what matters most to your attendees.
FAQs
How do you create a budget proposal for an event?
Start with your objective, headcount and format, then allocate your total across the core cost categories: venue, catering, entertainment, AV, branding, transport, staffing, insurance and contingency. Build the proposal as a one-page document with a category breakdown, a per-head figure and a total. Include 10–15% contingency as a separate line so your finance lead can see the core cost clearly.
How do you host a corporate event?
Pick a date and format, find a venue, book entertainment and catering, brief your attendees, and manage the day with clear logistics and a named point of contact for each supplier. For the full sequence from brief to breakdown, a corporate event planning checklist covers every stage.
What is the 50/30/20 rule? Does it apply to events?
The 50/30/20 rule is a personal finance framework that splits income between needs, wants and savings. It has no direct application to event budgeting. For events, the right category split depends on your format, headcount and what matters most to your guests. The worked example in this article is a useful starting point, but treat it as a framework, not a formula.
How do you prepare a corporate budget for an event within a department budget?
An event budget sits inside a department’s annual or quarterly budget as a project line. Agree the overall event envelope with your finance lead first, then allocate it across cost categories using the method above. If the event falls under HMRC’s staff entertainment rules, HMRC’s guidance on annual parties sets out the conditions for the exemption — confirm the details with your finance team.
Tell us about your event and we’ll put together a tailored proposal.