A small business needs only five to eight marketing KPIs, each tied to a goal and reviewed on a regular rhythm. Start with outcomes (enquiries or sales), add one or two efficiency measures (conversion rate, cost per lead), and include a small number of early indicators such as search clicks or engaged visits. Anything that does not lead to a decision is a vanity metric and can wait.
Start from the goal, not the dashboard
A KPI is a number that shows progress toward a specific goal. Write the goal first, in plain words: “increase qualified enquiries from the website” or “book more appointments from local customers”. Then pick the numbers that show whether it is working. If you cannot say what you would change when a number moves, drop it.
A short KPI set
| KPI | What it tells you | Where to find it |
|---|---|---|
| Qualified leads or enquiries | Whether marketing produces real opportunities | Contact forms, calls, CRM or a simple spreadsheet |
| Conversion rate | What share of visitors take your main action | Analytics key events divided by sessions |
| Cost per lead (paid) | Efficiency of ad spend | Ad platform and your records |
| Customer acquisition cost | Total marketing cost per new customer | Spend divided by new customers |
| Revenue or bookings from marketing sources | Business impact | Sales records tagged by source |
| Search clicks and impressions | Organic visibility and demand | Search Console |
| Engaged visits | Whether visitors find the site useful | Analytics |
| Repeat or referral share | Loyalty and word of mouth | Sales records, a “how did you hear” question |
Choose the ones that fit your goals. A local service business may care most about calls and booked jobs. An online shop may focus on orders, revenue and return on ad spend. A consultancy may focus on qualified discovery calls.
How to set them up
- Define the key action. In Google Analytics 4, a key event is an event you mark as important to your business. It then appears in reports such as acquisition and attribution, and you can create Google Ads conversions from it so counts stay consistent between the two tools (Google Analytics Help). Mark your enquiry form submission, booking confirmation or purchase.
- Track sources. Tag campaign links so you know where leads come from. See the marketing funnel article for stage-by-stage metrics and how the funnel fits together.
- Record offline results. Calls, visits and referrals matter. A simple “how did you hear about us?” field gives you data that analytics cannot.
- Set a baseline. Record the first month or quarter, then set realistic targets.
- Review on a schedule. Monthly for operational numbers, quarterly for direction. The measuring creative campaign performance article covers connecting creative work to results.
Understanding search and engagement data
Search Console’s Performance report shows clicks, impressions, click-through rate (clicks divided by impressions) and average position, grouped by query, page, country, device and date (Search Console Help). Use it to see which topics bring people to you and which pages need work. Clicks matter more than position, since position is an average and varies.
Engagement metrics need care. In Google Analytics, most reports do not include engagement rate or bounce rate by default, and you add them to detail reports by customising the report if you have the right permissions (Google Analytics Help). Use them to compare channels or pages and to ask why one performs poorly, not as a score of success in themselves.
Metrics to treat with caution
- Followers and likes. Useful context but weakly linked to sales.
- Total traffic. More visitors who never act are not progress.
- Impressions on their own. Visibility without clicks may signal poor targeting or weak messaging.
- Average position. Too volatile for a single decision.
- Platform-reported conversions. They depend on each platform’s attribution settings. Google Ads, for instance, offers last-click and data-driven models, and the model affects the conversions counted (Google Ads Help). Compare to your own sales records.
Keep the set small
Eight numbers on one page beats forty on a dashboard no one reads. Put each KPI with its target, last period’s value and a one-line comment. If a KPI has not informed a decision for two quarters, replace it.
Match KPIs to the stage of the business
| Stage | Likely focus |
|---|---|
| Starting out | Leads, cost per lead, simple source tracking |
| Growing | Conversion rate, customer acquisition cost, search visibility |
| Established | Repeat and referral share, revenue by source, efficiency of spend |
Use marketing budget allocation when KPIs show that one channel consistently outperforms another.
Limitations
Small samples make percentages jump around, so look at trends across several periods. Tracking is imperfect, particularly where consent rules, ad blockers or offline sales are involved. Treat numbers as evidence for judgement, not as certainty.
Where to go next
Radiance Impact’s Growth & Marketing division covers strategy, search visibility and campaigns. See /growth for details, or start a conversation through /contact.
Sources
- Key events in Google Analytics 4, Google Analytics Help
- Performance report (Search), Search Console Help
- Engagement rate and bounce rate in Google Analytics, Google Analytics Help
- About attribution models, Google Ads Help
