What Large-Scale Marketing Teaches Us About Smarter Budget Planning
Commercial lessons from large-scale marketing that can improve budget allocation, measurement and decision-making at any level of investment.
Joseph has planned media at every scale, from four-figure tests to large, multi-market budgets. The surprise is how little changes. Large plans are not necessarily more complicated. They demand greater discipline because weak assumptions become increasingly costly as investment grows. The same discipline works just as well for a more focused budget. Here is what it looks like.
Start from the business number, not the media number
A large-scale plan starts with the revenue the business needs and the margin it makes. Media is worked backwards from there: how many customers, at what value, at what cost, in which markets and in which months.
Most £30k accounts start the other way round: “we have £30k, what can we buy?” The target ROAS is whatever it was last year. Nobody has checked it against the margin. Start with the business number. If you do not know the contribution margin on a sale, find out before you spend another pound.
Plan the year, not the month
Big plans are built for the year with the seasonality in them. The budget for the Grand National is agreed in November. Small accounts set a flat monthly budget and then wonder why they are capped in the weeks that matter.
Take last year’s revenue by week. Overlay the events that drive demand. Put the budget where the demand is. A flat budget across a seasonal business is a decision to under-spend in the good weeks and over-spend in the bad ones.
Separate the channels by job
At scale, every channel has a written job. Search captures demand. Social creates it. Affiliates extend reach into places the brand cannot go. Each has its own target because each does a different job.
Small accounts often give every channel the same ROAS target and then cut the one that looks worst. That is usually the one doing the hardest job. Give each channel a job and a target that fits it.
Measure incrementality, not attribution
With substantial budgets at stake, platform reporting alone is not enough. Geo tests, holdouts and marketing mix modelling provide a broader view of marketing effectiveness and help distinguish captured demand from incremental growth.
You can run a holdout at £30k a month. Turn off remarketing for a month in half your regions. See what happens to sales. It costs little and it settles arguments that dashboards never will.
Write the assumptions down
A big plan has a page of assumptions: conversion rate, average order value, margin, seasonality index, the attribution model. When the results miss, you can see which assumption was wrong.
A small account has the assumptions in someone’s head. When results miss, the answer is “search is not working”. Write them down. One page. Review it quarterly.
Have a governance rhythm
At scale: a weekly trading meeting with the numbers, a monthly review of the plan against actuals, a quarterly re-plan. Decisions get made in those meetings and written down.
At £30k a month, a thirty-minute weekly review with the same three numbers (spend, revenue, contribution) and a written note of what changed will do most of the same work. The point is that someone looks, every week, with the plan in front of them.
The one thing that does not scale down
Big accounts can afford tests that small ones cannot. A £30k account cannot hold out ten per cent of budget to test a new channel every month. So test less often and test bigger. One proper test a quarter beats twelve small ones that never reach significance.
The short version
Start from margin. Plan the year. Give each channel a job. Measure incrementality. Write the assumptions down. Review performance every week. None of it requires an enterprise-scale budget; it requires the discipline that larger investment demands.