• What is Advertising Budget?

Advertising Budget

Advertising Budget is the money a business commits to paid promotion over a defined period - usually a year, broken down by quarter, channel, and campaign. Set well, it’s a forecast; set badly, it’s a wishlist.

Most budgets I see are built backwards. Someone picks a number that “feels right,” divides it across channels by gut, and revisits it when results disappoint. The budgets that compound start from a different question: what’s the smallest spend that proves the channel works, and what’s the largest spend before it stops working?

The three frames most teams use

Budgets get set one of three ways, in roughly descending order of how rigorous they are:

Goal-driven. “200 net new customers this quarter at a target CAC of $400.” Multiply: $80k. Add a buffer for testing. The right way; almost nobody does it from scratch.

Percentage of revenue. “We spend 8% of revenue on paid acquisition.” Common in established businesses, useless for early-stage. Benchmarks float 5-15% B2C, 2-10% B2B - wide enough that the rule mostly tells you what your industry’s average mistake is.

Competitive matching. “Roughly what our two closest competitors spend.” Sometimes informed; usually an excuse to copy a guess.

What the budget actually has to cover

Five buckets, often forgotten by half:

Media spend - the obvious one, the ad placement money itself.

Production - creative work. New ad units, photography, video, landing page design. Underbudgeting this is how campaigns ship with stock photos everyone hates.

Tooling - analytics, attribution, ad ops platforms. Cumulative subscriptions add up fast.

People - agency fees, ad ops salaries, freelancers. The hidden majority of total cost.

Test reserve - 10-20% held back for the channel you’ll discover halfway through the year you should have been on. Budget fully allocated by January = no room to be opportunistic in May.

The mistake almost everyone makes

Allocating annually and treating it as locked. The whole point of paid is that the data comes in fast enough to reallocate quickly. A budget that doesn’t move between channels every quarter isn’t being managed - it’s being administered.

The discipline: monthly check-in on cost per acquisition by channel, quarterly reallocation, and a willingness to cut a channel that isn’t working without waiting for a “fair test.” If a channel hasn’t paid back at three months, it probably won’t at six. Move the money.

An example

A 25-person B2B SaaS sets a $480k annual ad budget at the start of the year. Initial split: $240k Google Ads, $120k LinkedIn Ads, $60k industry sponsorships, $40k content syndication, $20k test reserve.

By month four the data shows Google Ads is hitting target CAC ($340), LinkedIn is at $620 against a $400 target, sponsorships are at $1,100 (way off), and content syndication is at $290 - well under target with room to scale.

They reallocate at the start of Q2: pull $40k from sponsorships, pull $30k from LinkedIn, push $50k extra into syndication, push $20k into Google Ads. End of year: 1,180 net new customers at average CAC $407 against the original 1,200/$400 plan. Underperformed slightly on volume, beat the target on most of the spend, and learned exactly which channels to run again next year.

What a healthy review looks like

Three numbers minimum, by channel: CAC, payback period, contribution to total acquisition. If your review is mostly about whether you spent the money you said you would, you’re looking at the wrong thing.

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