
Strategy & Craft
Splitting an ad budget: the 70-20-10 rule
Seventy per cent on what works, twenty on scaling, ten on experiments. The rule is old, simple, and violated in almost every account.
Strategy & Craft
A tone that exists only in a brand document changes nothing. Made usable, it is three word pairs and a list of banned phrases.

Most tone-of-voice documents describe an ideal: authentic, approachable, professional, competent. Every company claims all four, and the writing changes not at all.
The useful format is a pair, not an adjective. Each pair says what you are and what you are deliberately not.
| We are | We are not |
|---|---|
| Direct | Blunt |
| Knowledgeable | Lecturing |
| Warm | Familiar |
| Plain | Simplistic |
| Confident | Boastful |
Three to five pairs are enough. The second column is where the guidance lives, because it draws a line a writer can actually see.
The fastest way to change house writing is a list of phrases nobody may use. It is concrete, checkable and immediately effective.
Typical entries: "leading provider", "solutions", "state of the art", "your reliable partner", "we would be delighted to", "in today's world", "innovative". Add whatever your own drafts keep producing.
Add a second list of preferred replacements so the rule is not purely negative.
Abstract guidance fails at the moment of writing. Ten before-and-after pairs succeed, because a writer can pattern-match.
Collect ten of these from real material. They become the whole guide.
Two mechanical decisions that must be made once and kept.
Not from a workshop. From reading fifty customer enquiries and noting how they write.
If customers write short, plain sentences with practical questions, a formal corporate register creates distance. If they write carefully and formally, breezy informality reads as unserious.
A tone guide is used if it is one page and lives where writing happens. Two pages of pairs, banned phrases and examples, pinned above the desk or in the template.
Review it once a year by reading what was actually published. The gap between the guide and the output is the guide's real accuracy.
Whichever your customers use with you. Read your enquiry emails; they answer the question.
The register can, the voice cannot. Shorter on social, fuller in a letter, but recognisably the same firm.
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