How much should a small business actually spend on digital marketing?

Every business owner has heard the rule: spend between five and ten per cent of revenue on marketing. It is a fine rule if you are already at scale and simply want a sanity check. It is close to useless if you are turning over three hundred thousand dollars and trying to decide whether to hire a videographer or buy Google Ads.

The rule fails because it works backwards. It sets your spend from what you already earn, when the number you actually need is set by what a customer is worth and how many more of them you want.

Start with what a customer is worth to you

Before any figure goes into a budget, you need two numbers.

The first is your average customer value. Not the price of one transaction, the total gross profit a typical customer produces before they stop buying from you. A cafe with a four dollar coffee has a customer worth hundreds of dollars a year. A conveyancer with a two thousand dollar fee might have a customer worth exactly two thousand dollars, once, plus whatever referrals follow.

The second is your close rate on enquiries. If ten people fill in your contact form and three become clients, that is thirty per cent. Most service businesses have never measured this and guess far too high.

Those two numbers give you the only figure that matters: what you can afford to pay for one enquiry. If a client is worth two thousand dollars in gross profit and you close three in ten, each enquiry is worth six hundred dollars to you. Paying eighty dollars for one is an obvious yes. Paying four hundred is still profitable, just tighter than you would like.

Then work out how many customers you are missing

Set a target. Not a vague one, a number. Six new clients a month rather than the two you get now. Four extra enquiries a week. Something you would notice on a bank statement.

Four extra clients a month at a thirty per cent close rate means roughly thirteen extra enquiries a month. At eighty dollars per enquiry that is a bit over a thousand dollars in ad spend. Now you have a budget derived from an outcome instead of a percentage, and you can tell within a month whether it is working.

The order matters more than the amount

Where we see money wasted is almost never in the total. It is in the sequence. Businesses buy traffic before they have anywhere worth sending it.

The order that works is boring and it does not change much between industries.

First, fix the destination. If your website takes six seconds to load, buries your phone number, and opens with a paragraph about your company values, every dollar you spend on traffic leaks out the bottom. A site that converts at four per cent instead of one per cent has quadrupled your budget without you spending another cent. This is the cheapest gain available to most small businesses and it is almost always skipped.

Second, set up measurement. Conversion tracking, call tracking, a simple record of where each enquiry came from. Without it you are guessing at the end of the quarter, and guessing is how businesses cancel the channel that was actually working.

Third, buy demand that already exists. Search advertising and search optimisation capture people who are already looking for what you sell. It is the shortest path from spend to revenue and it is where a first budget should mostly live.

Fourth, create demand. Content, social, video. This is where the compounding happens, but it is slower and it is very hard to justify to yourself when the pipeline is empty. Build it once the immediate need is covered.

What a realistic first budget looks like

For a small Australian service business doing under a million in revenue, a workable starting point is somewhere between two and five thousand dollars a month all in, split roughly sixty per cent into media and forty per cent into the work that makes the media perform: the site, the content, the tracking.

Below about fifteen hundred a month, paid search in a competitive category will not gather enough data to optimise, and you will spend three months learning nothing. If that is your ceiling right now, put the whole lot into organic search and content instead. It is slower but it does not evaporate the moment you stop paying.

Judge it on the right timeframe

Paid search should show signal inside four to six weeks. If it has not, something is wrong with the offer, the landing page or the targeting, and more budget will not fix any of those.

Organic search and content need six months before you can fairly assess them. Businesses that give up at month three have paid the full cost and collected none of the return, which is the most expensive way to do marketing there is.

The number that should change your mind

Once you are running, one figure decides everything: cost per acquired customer against customer value. When it is comfortably profitable, spend more. When it is marginal, fix conversion before adding budget. When it is underwater, stop and work out why before you spend another dollar.

That single ratio is worth more than any benchmark percentage you will read.