Budgeting
How much should a small business spend on digital marketing?
By the RelancR team · October 13, 2026 · 2 min read
There is no single right figure, and anyone quoting one without knowing your numbers is guessing. There is, however, a sound way to reason your way to a budget you can defend, and to avoid the two classic mistakes: spending too little to learn anything, and spending more than you can sustain.
Start from the goal, not the budget
- Decide how much new revenue you want marketing to influence over the next 12 months.
- Divide by your average order or deal value to see how many new customers that means.
- Estimate how many leads you need to win that many customers, using your real conversion rate if you know it.
- Multiply by what a lead tends to cost in your market to get a first-pass figure for media spend.
If you do not know your conversion rate or cost per lead, use ranges and treat the result as a hypothesis to test, not a promise.
A rule of thumb to sanity-check the answer
A commonly used planning guide is to budget somewhere in the range of 5 to 10 percent of the revenue you expect marketing to influence. It varies a lot by sector, margins and growth stage, so use it only to check whether your plan is wildly out of proportion, never as a target in itself.
Separate the three costs
- Management cost: agency fees, or the salary and benefits of an in-house hire.
- Media spend: the money paid to platforms for ads.
- Tools and production: software, design, video, content.
A frequent mistake is assuming one number covers everything. Plan each separately, because a small budget split badly can leave ads under-funded or the work unmanaged.
Decide the time horizon first
Ask whether you can sustain the spend for six months if results are slow to appear. A budget you would cut at month three is, in practice, a budget for an experiment that cannot finish. It is better to spend a smaller amount for long enough to learn than a larger amount you will abandon.
What to do if the budget is small
- Focus on one channel and do it properly rather than spreading thin.
- Fix the free things first: your offer, your follow-up speed, your tracking.
- Use a short, tightly scoped project before committing to a retainer.
- Measure leads and cost per lead monthly, and adjust.
Budget realism is one of nine areas we score
The RelancR assessment checks whether your planned spend, timeline and expectations hang together, and flags the gaps before you commit.
Frequently asked questions
What is a reasonable minimum budget?+
Enough to gather meaningful data in the channel you choose, which depends on how much a click or lead costs in your market. A budget too small to produce a conclusion teaches you nothing, so it is often better to focus on one channel than to spread thinly.
Should marketing be a percentage of revenue?+
A percentage is a useful sanity check, but a poor starting point. Start from the outcome you want and work back to what it should cost, then compare with the rule of thumb to see whether the plan is out of proportion.
Is it better to spend on ads or on an agency first?+
Neither, if the foundations are missing. Ads sent to a page that doesn't convert, or leads nobody follows up, waste money however the work is managed. Fix those first, then decide who runs the work.
How do I know whether my spend is working?+
Track cost per lead, customer acquisition cost and payback time, ideally by channel. Review them monthly against the targets you set before you started.
This article is general guidance, not professional advice. Every business is different, and nothing here guarantees a particular result.