How Much Should a Small Business Spend on Marketing? Budgeting Rules of Thumb

Why a starting rule helps

With no history to work from, a new or growing business has nothing to base a marketing budget on. A rule of thumb gives a sensible starting point and prevents spending decisions being driven purely by whoever is selling the latest service.

The key is to treat any figure as a hypothesis. You spend, you measure, and you revise.

The percentage of revenue approach

A widely cited approach sets marketing spend as a percentage of revenue. Published guidance varies by industry, business stage and source, and the figures you will see quoted differ considerably, so treat them with caution. Established businesses that want to maintain their position often spend less. Businesses that want to grow quickly, or are building awareness from scratch, typically spend more.

Because sources differ, look for benchmarks specific to your industry and country, and compare a range rather than relying on a single number. A trade business that gets most work through referrals may need a lower budget than one relying entirely on new customers.

Working backwards from your goals

A more useful method for many small businesses is to work backwards. Decide how many additional jobs you want each month. Estimate what proportion of enquiries turn into jobs. Work out how many enquiries you therefore need, and what you can afford to pay for each one given your average job value and margin.

This produces a budget tied to outcomes. It also reveals when a target is unrealistic. If acquiring a customer costs more than the profit they bring, the problem lies in the model, not the budget.

• Average profit per job, after direct costs
• Proportion of enquiries that become paying jobs
• Maximum acceptable cost to acquire a customer, based on profit and repeat business
• Number of new jobs you want per month, within your capacity to deliver

Splitting the budget across channels

Divide spending between activities that build lasting assets, such as your Google Business Profile, website and reviews, and activities that buy immediate visibility, such as paid ads. New businesses often need to invest in foundations first, since advertising to a weak profile or site wastes money.

As results come in, shift money toward what produces enquiries at an acceptable cost, and away from what does not. Keep a small amount aside for testing new ideas without risking the whole budget.

Include time as well as money

Marketing costs include your own time. If you spend hours each week updating profiles, replying to reviews and posting, that has a value even if it does not appear on an invoice. Count it when comparing doing things yourself against paying someone. Equally, remember that capacity is limited: generating more enquiries than you can handle harms service and reviews.

Review and adjust

Set a review point, for example every quarter. Compare spend, enquiries, jobs and revenue. Ask which activities earned their place and which did not. Adjust the budget in steady steps instead of large swings, and give new activities enough time to show results, particularly organic ones.

Keep records so that next year's budget is based on evidence, not memory.

Avoiding common budgeting mistakes

Common errors include spending without tracking results, cutting marketing completely when work is slow, judging a channel too quickly, and paying for services without understanding what is being delivered. A steady, modest, well-measured budget usually beats erratic bursts of spending.