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The hidden costs of events: Why founders get the math wrong

Most startup founders treat events like they’re going travelling: count the days, block the calendar, done. But event tickets don’t come cheap, and the actual affair can eat into your budget in so many different ways, you’ll be left with a hole in your company wallet.

You see, the problem here is a simple case of math: one can’t budget for unforeseen expenses. That’s why we’ve put together a simple formula that founders can tweak to suit their business needs.

The 2:1 rule nobody talks about

Here’s a simple rule: Every single day at an event requires two full days of preparation. This isn’t bureaucratic overhead, it’s the operational reality of doing events properly.

Why does this ratio work? Because events operate on a timeline that’s fundamentally incompatible with how startups work. Most conferences lock speaker slots, booth spaces, and partnership opportunities months in advance. You can’t A/B test them or sprint your way in at the last minute.

Scaleups and corporates have dedicated field marketing teams who start preparing months in advance for events. They’ve already mapped the venue, scheduled meetings, and briefed their booth staff. If you show up with two hours of prep, you’re invisible.

But why should you set aside two days for every event day? You’ll fill them with research, targeting, outreach, scheduling, content, positioning, logistics operations, internal coordination, and post-event planning. 

You can’t change your pitch deck the morning of your panel. Events punish improvisation because the stakes are live and all opportunity windows close fast. That’s why a 2:1 ratio is the minimum buffer you need to make showing up worthwhile.

A three-day conference isn’t a three-day commitment; you’ll have to set aside at least six days before factoring in travel, team coordination, or what you’ll actually do at the event. Treat it as the baseline for local events that you’re only attending, too.

And when you add distance, team members or booth logistics to the equation, that number explodes.

The winning formula

Here’s what no event organizer will tell you upfront:

Total Time = (Event Days × 2) × Distance Factor × Team Factor × Activity Factor

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Distance multipliers

  • Local event (same city): 1.0x
    • Minimal travel disruption. You sleep in your own bed.
  • Domestic travel: 1.2x
    • Add a buffer for delays, early departures, travel recovery.
  • International: 1.5x
    • Factor in time for visa prep, time zones, cultural adjustment, and jet lag recovery.

Team size factors

  • Solo founder: 1.0x
    • You control your schedule, but you’re also doing everything yourself.
  • Two to three people: 1.3x
    • Account for coordination overhead: briefings, role assignments, post-event debriefs.
  • Four or more: 1.8x
    • Now you’re managing a small delegation, so account for logistics taking up a few hours of your days.

Activity type factors

  • Attending only: 0.8x
    • Passive participation means lighter prep, but also lower ROI potential.
  • Speaking: 1.2x
    • Account for deck prep, rehearsals, and Q&A planning. Public visibility demands polish.
  • Exhibiting: 1.5x
    • You’ll need to plan for booth design, swag logistics, staff training, and your lead capture setup. This is a campaign, not a trip.

What does it look like in the real world?

Let’s run an example scenario: Say you’re exhibiting at Web Summit with two co-founders.

  • Event duration: 3 days
  • Location: Lisbon (international for most European startups)
  • Team size: 3 
  • Activity: Exhibiting

Calculation:
(3 days × 2) × 1.5 (international) × 1.3 (team of three) × 1.5 (exhibiting) = 17.6 days

That’s nearly four working weeks of founder time. Not calendar days — productive working days. An entire sprint. A fundraising cycle. A product release window.

That’s before you account for the inevitable chaos: marketing materials might get delayed, or your booth might require a last-minute redesign, or one of your team might fall ill on day two.

This matters more than you think

Startups don’t fail because they attend too many events. They fail because they attended the wrong events and didn’t realize the true cost until it was too late.

Most early-stage founders operate on razor-thin runways and even thinner margins. Losing 17 days to the wrong conference can mean missing a critical hiring window, pushing a launch back by a quarter, or running out of cash.

The opportunity cost is immense.

Three filters to help you decide

Preparation is table stakes, but the real competitive advantage is selection. Before you commit to any event, run it through these three filters:

1. Are your top 10 target customers actually attending?

Don’t settle for “the industry will be there,” or “it’s a great brand.” Will the specific people who can write cheques or sign contracts be in the venue?

If you can’t name at least five confirmed attendees you want to meet, you’re engaging in speculation, and speculation is expensive.

2. Can you get time with decision makers?

Networking is not the same as dealmaking. Conferences are full of people collecting business cards and having “great chats” that go nowhere.

Look for pre-scheduled meetings, private roundtables, investor office hours, or curated dinners. If the event doesn’t facilitate structured access, you’re paying to work a room.

3. Does the timing align with your fundraising or launch cycle?

Attending a major event two weeks before a funding deadline is fundraising malpractice. Exhibiting at a trade show when your product isn’t ready to demo is theatre, not business development.

Timing isn’t everything, but mistimed events have the potential to burn capital and credibility in equal measure.

The real decision

Preparation is hard, but preparing brilliantly for the wrong event isn’t going to yield the results you’re looking for.

The formula above isn’t meant to scare founders away from conferences. If you’re going to invest 17 days of founder time, you’d better know exactly what ROI you’re chasing and have a plan to capture it.

Most founders wing it. The folks who don’t tend to be the ones still standing when funding dries up.

At Sesamers, we’ve spent years inside the event ecosystem, watching startups burn time and capital on conferences that looked good on paper but delivered nothing. The startups that survive and thrive aren’t the ones who attended the most events; they simply skipped those that weren’t relevant, and attended the right events at the right time, with the right preparation.

So before you book your next booth or confirm that speaking slot, do the math, and see if you can afford to go wrong.

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