Company size and industry are two of the settings in LinkedIn ads with the biggest say over who sees a campaign. Together they set the pool of organisations an ad can reach.
These settings fall under what the trade calls firmographic targeting. Firmographics are the organisation-level attributes of a member’s current employer, such as headcount, industry and location. They sit alongside person-level filters like job title and seniority.
What Each Size Band Says about How Buying Happens
Each size band gives a rough signal of who approves spend and how many people get involved. Field experience in the Australian market points to a fairly consistent pattern:
- In 1 to 10 staff firms, the owner usually makes the call, often on a trusted recommendation.
- The 11 to 50 band tends to stay owner-led, with a bookkeeper or ops manager weighing in on recurring costs.
- At 51 to 200, a finance function usually appears, and the owner or MD often signs off with finance input.
- Between 201 and 1,000, procurement commonly gets involved, bringing formal quotes and a longer approval chain.
- Above 1,000, supplier panels, tenders and security questionnaires show up more often, and decisions tend to take longer.
In practice, that splits the market into two broad groups. Up to 50 staff, one person usually decides. From 51 staff up, at least one other function has a say before money moves.
A hypothetical payroll software provider shows why this matters. Its single fast-setup ad runs across 11 to 1,000 staff. An HR manager at a 600-person firm is weighing integration with existing systems and audit trails, and the ad covers neither.
How Industry Shifts What a Size Band Means
Industry changes what a given headcount means, so the same size band can hide very different buying processes. A 150-person accounting firm and a 150-person manufacturer sit in the same band and buy in quite different ways. Common patterns worth factoring in:
- Professional services firms such as law, accounting and engineering consultancies often run as partnerships, so decisions at mid-sized firms sit with a partner group.
- Construction and resources firms often carry large site workforces, which leaves a fairly small head-office group making purchasing calls for the band.
- Public sector bodies follow formal procurement rules at almost any size, and Commonwealth entities are bound by the Commonwealth Procurement Rules.
- Healthcare and aged care providers often route purchases through compliance or clinical governance review, which adds approvers in mid-sized bands.
Reading both settings together changes where the approval chain starts. In procurement-heavy industries, it often starts in smaller bands than the general pattern suggests. For partnership-model firms, adding the Partner seniority level catches decision-makers an owner or CXO filter would miss.
How Seniority Changes Meaning Across Size Bands
A seniority filter reads differently depending on the company size it’s paired with, so the two settings work best when chosen together. Senior titles cost more to reach, and a mismatched pairing is where plenty of campaigns cop a hammering on cost per click. Pairings that tend to hold up in practice:
- At 2 to 50 staff, owner and CXO seniority captures most decision-makers. Owners of small Pty Ltd companies are usually registered directors, so the title fits.
- At 51 to 200, owner and CXO levels still matter, with director-level finance and operations staff added.
- Between 201 and 1,000, director and manager levels often hold budget for operational purchases.
- Above 1,000 staff, VP and CXO levels usually sign off on major contracts, with managers helping build the shortlist.
Campaigns aimed at large organisations often exclude the Entry, Training and Unpaid seniority levels. Those members rarely influence a purchase, and at big firms they can make up a sizeable share of the audience.
Choosing Industries Without Starving the Audience
Industry selection works best when it starts slightly broad and gets trimmed using campaign data. The recommended audience for Sponsored Content sits between 50,000 and 500,000 members, and layered Australian filters can drop below that quickly. Habits that keep industry choices accurate without shrinking the pool too far:
- Experienced operators look up how a handful of known target accounts classify themselves on their LinkedIn Pages before locking anything in.
- Adjacent categories often get included when known target accounts spread across more than one classification.
- Campaigns aimed at a service niche sometimes exclude the advertiser’s own industry to keep competitors from eating up clicks.
- The forecast audience size gets checked after each filter goes on, which shows exactly which layer caused the biggest drop.
Once a campaign has run for a few weeks, the Demographics report in Campaign Manager breaks results down by industry and company size. Industries that absorb spend without converting are the first candidates for trimming.
Frequently Asked Questions
What Company Size Should Australian Businesses Target on LinkedIn?
It depends on who signs off on the purchase. Owner-approved purchases tend to suit the 2 to 50 bands, while purchases needing finance or procurement approval suit 51 staff and above. Offers sold through panels or tenders point to the 1,001-plus bands.
Should Industry or Company Size Come First When Building an Audience?
Company size usually comes first, paired with job title or seniority. Industry then works as a refinement layer. Adding it last shows how much each industry choice shrinks the forecast audience.
Why Does LinkedIn Say an Audience Is Too Small?
LinkedIn needs at least 300 matched members before a campaign can run at all. Delivery also suffers well before that point in a heavily layered Australian audience. Widening the size bands or adding adjacent industries is usually the quickest fix.
Key Takeaways
Company size and industry filters pay off most when they’re read together as signals of how an organisation buys. The points that make the biggest difference in practice. Well-chosen size and industry settings give the creative and the budget a fair crack at the right people.
