How an event profit and loss structure is built line by line

Two people are looking at the same show. The show director has a deck saying the June exhibition made 3.7 million on 8.4 million of revenue. Group finance has a schedule saying it made 2.8 million. Neither number is wrong, and nobody in the room can say so out loud yet, because the event profit and loss structure underneath them has never been written down anywhere both parties can see.

The gap is 900,000 and it is one line: a share of central overhead that group finance charges to shows and the show director has never been shown. That is the whole argument, and it repeats every year in every portfolio I have looked at.

The four blocks, and why the order is the point

An event profit and loss statement is a waterfall of four subtractions. Revenue by line at the top. Direct show cost. Sales and marketing. Allocated central overhead. Each subtraction produces a subtotal, each subtotal has a name somewhere in your company, and the names are used inconsistently enough that two people can quote different margins for the same show and both be honest.

Work the June show through it.

Revenue is 8.4 million. Direct show cost is 3.1 million, so the first subtotal is 5.3 million, which is 63.1 per cent of revenue. Sales and marketing is 1.6 million, so the second subtotal is 3.7 million, or 44.0 per cent. Allocated overhead is 900,000, so the third and final subtotal is 2.8 million, or 33.3 per cent.

Three margins from one show: 63.1, 44.0 and 33.3. All three are correct. The only defect is quoting one of them without saying which line it stops at.

That is why the order matters more than the labels. Direct cost comes out first because it disappears if the show does not happen. Marketing comes out second because it is committed months earlier and is only partly avoidable. Overhead comes out last because it does not disappear at all, whatever the show does.

What counts as a direct show cost?

The test I would use is whether the cost survives cancelling the edition. Hall hire, floor build, aisle carpet, security, cleaning, registration hardware, badge stock, on-site catering for staff, the contractor's labour bill, freight into the hall. Cancel the show far enough out and most of that goes away, minus whatever the contracts hold you to. Which of those lines are big enough to manage, and how each one moves, is the subject of the largest direct cost lines, and whether a given line holds steady or scales with the floor you sell is the fixed and variable split.

Two lines get argued about every year. The first is the permanent show team's salaries, which some organisers put in direct cost and others put below the line, and which behave like overhead for a show that runs once a year and like direct cost for a team that flexes with the calendar. That split has its own arithmetic and belongs with event staff cost allocation. The second is anything you buy and resell to exhibitors, which raises a presentation question rather than a cost question.

Emerald Holding's Form 10-K for the year ended 31 December 2025, filed in March 2026, gives a public reference point for how big this block runs at portfolio level. Its Connections segment, which holds the trade shows and other live events, reported 423.1 million dollars of revenue against 158.2 million of cost of revenues. That is 37.4 per cent. Selling, general and administrative expense in the same segment was 93.6 million, or 22.1 per cent, and segment adjusted EBITDA came in at 171.3 million, which is 40.5 per cent of segment revenue.

Hold that 40.5 per cent for a moment, because the next section is about what it excludes.

Where does sales and marketing sit?

Below direct cost and above overhead, and the reason is that it is a decision rather than a consequence. Direct cost follows from the show you have sold. Marketing spend is a number somebody chose, and separating it lets you see what happens to the margin when the choice changes.

On the June show, 1.6 million of marketing against 8.4 million of revenue is 19.0 per cent. Cut it to 1.2 million and the second subtotal moves from 3.7 to 4.1 million, which is 48.8 per cent, and the only question worth asking is what the 400,000 was buying in registrations. The ratio itself is a reporting convention with a well-known failure mode, which is marketing spend as a percentage of revenue territory.

Exhibition sales commission belongs in this block too, and it carries an accounting question that the block hides. Commission on a stand booking is an incremental cost of obtaining a contract, and IFRS 15, issued by the IFRS Foundation in 2014, has a specific rule about whether it goes on the balance sheet or through the income statement. For a show selling twelve months ahead the answer is usually simple, and it is set out under capitalising sales commissions for events.

The overhead line that starts the argument

Emerald reports 51.4 million dollars of general corporate and other expenses for 2025, and reports them below segment adjusted EBITDA rather than inside it. The 10-K describes the corporate-level activities category as finance, legal, information technology and administrative functions. So the 40.5 per cent segment margin above is a pre-overhead figure by construction.

Do the arithmetic the other way and the size of the effect is obvious. Connections revenue of 423.1 million is 91.3 per cent of the group's 463.4 million total, so a revenue-weighted share of the 51.4 million would push 46.9 million onto the segment. Adjusted EBITDA of 171.3 million less 46.9 million is 124.4 million, which is 29.4 per cent. The same segment, the same year, the same audited numbers: 40.5 per cent or 29.4 per cent, depending on one presentation choice.

IFRS 8, the operating segments standard adopted into European Union law in 2007, is unusually direct about this. Paragraph 25 says that "the amount of each segment item reported shall be the measure reported to the chief operating decision maker for the purposes of making decisions about allocating resources to the segment and assessing its performance". There is no prescribed allocation. The standard then requires an entity to explain how segment amounts are measured, including how centrally incurred or jointly used items are treated, and to reconcile the segments back to the group. The disclosure is the discipline, and copying that habit into your internal pack costs nothing. Which basis you pick, and how to stop it turning into a fight, is allocating central overhead to shows.

What the published benchmarks actually measure

CEIR's Performance Benchmark Playbook, second edition, covers B2B exhibitions with 200,000 or more net square feet of paid exhibit space and reports a median gross revenue of 12.5 million US dollars, an average net profit margin of 55 per cent, and 80 per cent of organisers reporting profitability.

Fifty-five against Emerald's 40.5. Both are real and they are not in conflict, because they are measured on different things. CEIR is reporting show-level margins for very large individual exhibitions. Emerald is reporting a segment margin across a portfolio of shows of every size, after a full year of segment selling, general and administrative expense. A show-level margin excludes the cost of the company that owns the show. A segment margin includes some of it. A group operating margin includes all of it.

So when a board paper says the industry runs at 55 per cent and asks why yours runs at 33, the first response is to establish which of the four subtotals the 55 was measured to. In my experience that question ends the conversation about half the time, because nobody knows.

Building the statement so it survives a second reader

Four habits make the difference, and none of them need a new system.

Put the subtotal names on the page. Gross contribution, show contribution, show profit after overhead. Whatever you call them, name them once and use the same names in the budget, the reforecast and the post-show pack. The ratio group finance will want reconciled to the statutory accounts is a narrower one, and the event gross margin calculation sets out what it has to exclude.

Publish the overhead basis next to the overhead number. One line. Allocated on revenue share, 8.4 of 39.2 million, 900,000. A reader who disagrees with the basis can now say so, which is much better than a reader who suspects the number and says nothing.

Break revenue into its lines. Space, sponsorship, delegate fees and services behave differently and carry different margins, and collapsing them hides the mix shift that explains most year-on-year margin moves.

Keep a line for anything you resell. Stand build, housing, freight handled through the organiser. Whether those appear gross or net changes the revenue number by a large multiple without changing the profit by a penny.

Where this stops

A four-block statement tells you what a show earned. It says almost nothing about what a show is worth, and the gap between those two is where most portfolio decisions actually get made.

The clearest case is a launch. An edition running at minus 400,000 in year one on 1.9 million of revenue looks like the worst show in the portfolio on this structure, and it may be the best thing the company owns if the third edition clears 4 million. Nothing in a single-year profit and loss statement captures that, and forcing the launch to carry a full overhead allocation in year one makes the reporting actively misleading.

The second limit is that the direct cost block is only as honest as your accruals. A show that closes on 27 June and reports on 30 June has three days to book contractor invoices that will not arrive for six weeks. The margin you circulate in the first week of July is an estimate wearing a precise-looking number, and the honest version says so.

This week, take the last post-show pack you sent and write the four subtotals down the side of it with the percentage next to each. If any of the four is missing, you have found the line the two versions of your show margin disagree about, and the rest of the event finance work gets easier once it is written down.