What it means
The phrase comes from an old advertising billing convention. Agencies took a commission on mass media bookings and charged a separate fee for everything else, drawing a literal line across the invoice between the two.
The commission model has largely disappeared, but the vocabulary stuck. The practical distinction today is about targeting and measurement.
Above the line buys reach among people you cannot name, while below the line reaches people you can identify, contact and track through to a purchase. That makes the return far easier to calculate, which matters a great deal when a finance director asks what the last campaign actually delivered.
Typical below the line activity includes email marketing, direct mail, telesales, exhibitions, point of sale displays, product sampling and referral schemes. Many businesses also count search advertising and paid social here because both are targeted and directly measurable, though some argue the distinction has now blurred beyond usefulness.
A common compromise is the phrase through the line, describing campaigns that coordinate both. In accounting terms both types sit in selling and marketing expense, but they behave differently as spending decisions.
Below the line spend is easier to switch on and off, tends to produce results within weeks, and can usually be scaled in small increments. Above the line spend commits larger sums up front and builds awareness that pays back over a longer horizon.
The risk of relying only on below the line is that you keep harvesting demand without creating any. Campaigns that convert existing interest cheaply look excellent on a cost per acquisition report while the pool of interested people quietly shrinks.
Most balanced plans fund both and judge each against a different time horizon.
In practice
Real-world examples.
Example
A regional bakery chain spends $18,000 on a sampling stand at three food festivals and hands out a discount code unique to each event. Redemptions let the marketing manager attribute 620 first purchases to the activity, giving a cost per new customer of just under $30.
Example
A business software firm cancels a magazine advertising contract and moves the money into a series of customer webinars and a targeted email programme. Pipeline generated becomes traceable to individual contacts for the first time, and the sales team stops arguing about whether marketing is working.
Example
A supermarket runs an in-store promotion offering a free coffee with any bakery purchase before ten in the morning. Basket data shows morning bakery volumes up 22% over the promotion period, with the incremental margin comfortably covering the cost of the coffee.
Formula
Calculation
Below the line share of budget = (Below the line spend / Total marketing spend) x 100
Cost per acquisition = Campaign cost / Number of customers acquired
Worked example. A specialist kitchen equipment supplier has a $2,000,000 annual marketing budget. It allocates $1,250,000 to television and outdoor advertising and $750,000 to trade shows, direct mail and email.
Below the line share = ($750,000 / $2,000,000) x 100 = 37.5%
Within that below the line budget, a $150,000 direct mail and sampling campaign aimed at independent restaurants produces 3,000 new trade accounts.
Cost per acquisition = $150,000 / 3,000 = $50 per account
If the average new account delivers $600 of gross profit in its first year, the campaign generates 3,000 x $600 = $1,800,000 of gross profit on $150,000 of spend. That is a first year return of $12 of gross profit for every dollar invested, a figure the team can compare directly against other uses of the same money.Case study
Seen in the real world.
Pemberton Tools is an illustrative, fictional manufacturer of hand tools sold through independent hardware stores. For years its entire $900,000 marketing budget went into trade press advertising and a sponsorship deal, with results that nobody could measure.
A new commercial director shifted $400,000 of that budget below the line: a merchandising programme for 700 stockists, a sampling scheme for trade apprentices, and an email newsletter to store owners with stock and margin advice. Each element carried a tracking code, so revenue could be attributed store by store.
Within a year the below the line activity was showing a cost per incremental dollar of gross profit that the trade press advertising could not match. The illustrative caution is what happened next: after two further years of shifting money away from brand building, unprompted awareness among store owners had fallen, and the below the line campaigns were converting a steadily smaller pool of interested buyers. Pemberton settled on a roughly even split.
Watch out
Common mistakes.
- Treating below the line as inherently better value because it is measurable, when the measurable part is often demand that mass media created.
- Counting every sale that follows a campaign as caused by it, without any control group or baseline comparison.
- Capitalising below the line campaign costs as an asset when accounting standards generally require advertising to be expensed as incurred.
Questions
People also ask.
What counts as below the line?
Any activity aimed at a specific, identifiable audience, such as direct mail, email, trade shows, sampling, in-store promotion and loyalty schemes.
Is digital advertising above or below the line?
Targeted search and social advertising is usually classed below the line, while broad display and video campaigns bought for reach sit closer to above the line.
Why does the split still matter?
It helps a business balance short-term demand capture against longer-term brand building, and the two are judged on very different timescales.
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