There's a pricing page for every marketing service — websites, logos, ad campaigns. Try finding what a B2B conference actually costs, though, and you hit silence. Event agencies quote "individually", so the first real number you see is in a proposal — with the date already looming and no room left for calm maths. Here's the budget from the inside.
The ranges below come from productions we've run ourselves and budgets we've consulted on. Three event scales, the cost anatomy line by line, the items missing from first proposals — and the thesis that frames everything else: a conference is a marketing channel, not a company party. Whether you treat it as one decides whether the budget pays back.
Three scales, three very different budgets
Conference cost doesn't grow linearly with headcount. Between 50 and 300 people everything changes: venue class, staging, parallel tracks, safety requirements, team size. So instead of one table — three real scenarios.
Executive event, up to 50 people: €7,000 – 18,000
The executive format: one room in a good hotel or an unusual space, two or three speakers, premium catering, minimal tech (sound, screen, light) and careful staging. In B2B this is the highest-leverage format there is — 40 of the right people in a room beat 400 random ones.
The trap: "intimate" doesn't mean "cheap per head". Paradoxically, cost per attendee is highest here (€140–360), because the fixed costs — room, tech, production — spread across a small group. The point of this format isn't the cost. It's the quality of the conversations.
Industry conference, 150–300 people: €28,000 – 70,000
A full production: a conference centre or large hotel, a stage with light and sound engineering, often a second track, a partner zone, a moderator, video coverage, event branding and a guest registration system. At this scale coordination stops being a side task — it's three to four months of somebody's work.
Large-scale, 500+ people with headline names: from €90,000
An arena or major congress centre, broadcast-grade production (LED walls, multicam, live direction), a recognisable keynote, sponsor zones, security, medics, accreditation. The realistic band is €90,000–200,000; an international star or a live broadcast pushes past that. At this level one rule governs the budget: anything without a plan B will eventually demand one.
Budget anatomy — where the money actually goes
Whatever the scale, conference budget proportions are surprisingly repeatable. If one line in a proposal is far off, that's a prompt for questions — in either direction.
- Venue: 25–35% of the budget — main room, workshop rooms, back-of-house, parking. Plus the lines nobody thinks about: three-phase power for the rig, hourly hire for build-up the day before, cleaning.
- Staging and tech: 20–30% — sound, light, screens, show direction, streaming. The easiest line to compare across proposals — and the most dangerous to cut (more below).
- Catering: priced per head — realistically €35–60 net per person for lunch and two coffee breaks; €70–120 once a dinner or banquet joins. Watch for corkage and mandatory in-house operators.
- Speakers: €0 – 25,000+ — industry experts often speak for exposure and good logistics. A professional keynote runs €1,200–3,500. A recognisable name — €5,000–25,000 and up, plus the rider.
- Content production: 5–10% — video coverage, photography, editing. The most underestimated line in conference budgets, and the only one that keeps working after the event. More below.
- Coordination: 10–20% — an agency, or your team's time. This line always exists; the only difference is whether it sits on an invoice or hides in your people's overtime.
An event without content is burned budget
Now the thesis we open every conference conversation with: an event that leaves no material behind ends the moment the crew kills the lights. Eight hours, several hundred people — and no trace beyond a story that expires in a day.
Well-planned coverage turns a one-day cost into a year-round channel: talks cut into social-selling clips, an aftermovie that sells tickets for the next edition, photography that feeds every campaign for twelve months, and social proof your sales team actually sends. A video crew for an industry conference runs €2,000 – 6,000, depending on cameras and edit scope — we broke down the full production ranges in our piece on how much a commercial video costs. In an industry-conference budget that's typically 5–10% — the only line that keeps working after the stage comes down.
A conference lasts eight hours. Filmed well, it works for twelve months.
That's why in our budgets content isn't an "optional extra" at the bottom of the quote. It's the reason the event pays off at all.
Hidden costs — what the first proposal leaves out
- Organiser liability insurance — a few hundred euro, a few thousand at scale. Nobody remembers it until an attendee slips on the stairs.
- Backup tech — a redundant microphone, projector, power. 5–10% of the tech cost for things you won't use if all goes well. You pay for them so you never have to.
- Crew overtime — build-up ends past 10pm, teardown runs overnight, and the venue bills every extra hour of hire. Night rates are typically 150–200% of day rates.
- Music licensing — any music in the room, even a playlist, triggers a licence fee scaled to headcount.
- Corkage and house operators — some venues charge to let outside catering in, or force their own, pricier one.
- Event-grade internet — a dedicated line for 300 people is a separate service, not "hotel Wi-Fi". It hurts most during live streams and interactive votes.
- Catering no-shows — you pay for portions ordered, not eaten. Free-registration events see 50–70% of sign-ups actually show up.
The practical rule: a 10–15% reserve written into the budget as a line item, not a pious wish. If the agency's proposal doesn't have one — add it yourself.
Where to cut, and where never
When the budget doesn't close — and at a first edition it almost never does — cut where attendees won't feel the difference:
- Swag — nobody needs another branded power bank. One considered item beats a bag of filler.
- Print — an agenda behind a QR code instead of brochures, 80% of which hit the bin at the exit.
- Set design beyond the identity — good branding on screens does more than a forest of banner walls.
- The open bar — wine and beer instead of a full bar; the invoice can halve.
And where you never cut:
- Sound — the cheapest way to make 300 people remember exactly one thing about your conference: that they couldn't hear it. Feedback and a dead microphone destroy the keynote you paid thousands for.
- Video coverage — see above. Cutting content means agreeing the event stops existing at 6pm.
- Arrival and check-in — the first ten minutes set the score for the whole day. A queue at one desk with a printed list costs more in reputation than it saves.
- Coffee — sounds trivial, but conference attendees will forgive almost anything except a queue for a single thermos.
Agency or an in-house coordinator
In-house makes sense when you run recurring, intimate events (up to ~50 people), the format is stable, and someone on the team has done it before. Count it honestly though: that's two to three months of their work, supplier rates with zero negotiating leverage, and all the risk on one head.
An agency makes sense when it's a first edition, the scale passes 150 people, stage tech and headline names are in play, or the date won't move. An event agency's fee is usually 10–20% of the production budget, or a flat amount. A good agency earns its fee twice: once on rates it has already negotiated with suppliers, and again on the problems it sees before they happen.
The test is simple: ask for an itemised budget and probe the hidden-cost list above. Whoever carries those as standard has done this many times. And before you write to any agency at all — prepare answers to the seven brief questions. They work for an event exactly as they do for any other project.
Attendance is a budget line too
The most expensive conference scenario isn't an overrun budget. It's a paid-for venue, a confirmed headliner, and registrations at 40% of plan. If the event is open or ticketed, promotion realistically takes 10–15% of the budget: a registration landing page, a paid campaign (we covered how to budget one in the piece on Google Ads and Meta Ads campaign costs), an email sequence, and remarketing at the undecided in the final two weeks.
Questions to ask a proposal
- Is the budget itemised, or am I looking at one line called "event production"?
- What happens to the price if attendance moves 20% either way?
- Is backup tech included — and who pays for build-up overtime?
- What exactly do I get from video coverage: raw files, edited talks, social clips?
- What are the cancellation terms with the venue and suppliers — who holds that risk?
- How many events of this scale have you produced, and can I speak to a past organiser?
How we approach this at Krowd
At Krowd Events a conference is a marketing channel, not a company party. Planning starts with what the event should produce — leads, expert positioning, material that works for twelve months — and only then do we pick the scale, the venue and the rig. We've produced stage events of our own from scratch, with a full orchestra on stage — like 80s Classic Orchestra — so the ranges in this piece come from invoices, not theory.
Planning a conference and want to stress-test the budget? Write to us through the contact form with three things: the business goal of the event, the rough headcount, and your budget range. We'll come back within 24h with an honest answer — including when the honest answer is that at this budget, three intimate events will deliver more than one big conference.