How to Budget Paid Media Across Channels Without Cannibalising Either

The most common paid-media mistake is not overspending. It is treating search and social as two versions of the same thing, splitting the budget by habit, and then cutting whichever one looks worse in the report.

They are not the same thing. They catch demand at different points, and the split should reflect that.

Search catches existing demand

Search advertising reaches people who already know they have a problem. They typed the query. Your job is to be the answer at the moment they are looking, and to send them to a page that converts.

• Highest intent, lowest volume. Every click is a decision already half-made.
• Cost per click is high because the intent is high. That is the price of catching demand, not a reason to avoid it.
• Measurement is relatively clean: someone searched, clicked, and either converted or did not.
• It does not create demand. If nobody is searching for what you sell, search will not help.

Social creates demand

Social advertising reaches people who were not looking for you. It interrupts, informs and reminds. Its job is to put your name in front of the right people often enough that when they later need you, you are the one they search for.

• Lower intent, higher reach. You are paying for attention, not for a decision.
• Attribution is messy. Someone sees your ad on Tuesday, searches your name on Friday, and converts on Monday. The social channel gets none of the credit in a last-click report.
• It builds the brand that makes search cheaper later. Search and social are not competitors for budget; one feeds the other.
• It needs creative. A search ad is text and a landing page. A social campaign is video, copy and frequency, and all three have to be right.

Retargeting is neither

Retargeting is the third budget line, and it is usually mislabelled as either search or social. It is people who already know you, shown your message again. It is the cheapest conversion in the mix and the one most often underfunded.

A practical split

There is no universal ratio, but there is a sensible starting point for a business that has not run paid media before.

• 60 percent search. Capture the demand that already exists for your category and your name.
• 25 percent social. Build awareness in the audience that will need you next quarter.
• 15 percent retargeting. Re-engage everyone who has visited but not converted.

When to move money

• Move money out of search when you are bidding on terms you already rank for organically. You are paying for traffic you would have had for free.
• Move money into search when a new product or market has no awareness yet and nobody is searching for you by name.
• Move money out of social when the creative has fatigued and frequency is high without conversion. New creative fixes this faster than more budget.
• Move money into retargeting when you have traffic but no conversions. The audience is warm; the message is not landing.

What breaks the split

• Last-click attribution. It credits the final click and ignores everything that made it happen. Search looks brilliant and social looks worthless, so the budget moves the wrong way.
• Cutting the channel that feeds the other. If you cut social because it shows no direct conversions, search volume for your brand name will fall in the following months. By the time you notice, the cause is hard to trace.
• Reporting on clicks rather than cost per qualified lead. Cheap clicks from the wrong audience make a channel look healthy while it loses money.

The honest version

The split matters less than the measurement. A business that knows its cost per qualified lead by channel can move budget confidently. A business that does not is guessing, and usually guesses in favour of whichever channel had a good month.