Google Ads on a Small Budget

What counts as a conversion

A conversion is the smallest event on your website that's a real signal of a likely customer. Not a page view. Not a scroll. Not a button click that doesn't actually do anything. A real signal. For most small businesses, that signal is one of four things: a form submission, a phone call, a chat or message started or a booking made. Pick the one or two that apply to your business and track those.

Don't track soft signals as conversions just to make the dashboard look fuller. "Time on page over thirty seconds" or "clicked the menu link" feel like wins but neither correlates strongly with becoming a customer. The platform's algorithms then optimise for soft signals, the ad spend chases people who hover but don't enquire and your real cost per customer climbs. A small number of honest conversion events beats a large number of soft ones every time.

The four conversion types worth tracking

Set the right conversion as the primary one - the closest event to becoming a real customer. For a service business, that's usually the form submission or the call. For an online shop, that's the purchase confirmation page. For a coach or therapist, it's the booking confirmation. The primary conversion is what the platform's bidding algorithms will optimise for, so it has to be the event that means a real customer most of the time.

The technical setup in plain language

Inside Google Ads, go to Tools, then Conversions. Create a new conversion action. Pick "Website" if you're tracking form submissions, bookings or purchases. Give it a sensible name ("Form submission - main contact form," not "Conversion 1"). Set the value if your offer has a single price; otherwise leave it blank and use cost per conversion as the metric. Set the count to "One" so a single user submitting twice doesn't count as two.

The platform then gives you two snippets of code. The first is a global tag that goes on every page of your website. The second is an event snippet that fires when the conversion happens. For most small business websites built on common platforms (a website built on a standard small business builder, a hand-coded site or anything in between), the global tag goes in the site's footer or header section, and the event snippet goes on the confirmation page that loads after the form is submitted. If you can't access the page templates yourself, send the snippets and the page they go on to whoever maintains your site - it's a ten-minute job.

Test the conversion tracking immediately by submitting your own form. Wait twenty-four hours. Check the conversion in Google Ads. If it shows zero conversions and you definitely submitted the form, the tag isn't installed correctly and you need to fix it before spending another pound on traffic. The platform's tag assistant tool walks through the diagnostics step by step.

Phone call tracking

If your business takes a meaningful share of enquiries by phone, calls have to count as conversions or your tracking will systematically underreport the value of the campaign. Two ways to do this. First, enable call extensions in Google Ads itself. Calls made directly from the ad on a phone (tap-to-call) get tracked automatically as conversions if you enable call conversions. Second, set up Google's call forwarding feature on your website. The platform replaces your normal phone number with a temporary forwarding number for visitors from ads, tracks the call, then routes it through to your real number. The customer experience is identical.

Set the call duration threshold to thirty or sixty seconds before the call counts as a conversion. This filters out wrong numbers and people who hung up after one ring. For most small business categories, anyone who stayed on the call for thirty seconds was a real enquiry.

Offline conversions: the customers who never used the website

Google can only track conversions that happen on the website or via tracked phone calls. Customers who got your ad's address from the platform, walked into your shop and bought something don't appear in the conversion data. Customers who saw your ad, asked a friend about you, then booked through a referral don't appear either. For some small businesses (especially local services and physical shops), this offline gap can be twenty to forty per cent of real customers.

The fix is offline conversion uploads. Once a month, take your customer list, identify the customers who came from the ad campaign (you can ask new customers "how did you find us" as a routine question and write the answer next to their record), match them to the click data Google Ads gives you and upload the matched list back to the platform. The platform then attributes those customers to the ads that brought them, the bidding algorithms optimise for them and the cost per customer numbers reflect reality.

This sounds harder than it is. For a small business, it's a thirty-minute job once a month. The earlier eBook Simple Customer List Systems covers the customer-record habit that makes it easy.

Reviewing conversion data honestly

Once tracking is live, the conversion column in Google Ads shows you what's working. Don't react to single-day data - conversions are noisier than clicks and individual days mean almost nothing. Look at the last fourteen days at minimum. Look at the cost per conversion (Google's term for cost per enquiry). Look at the conversion rate (the share of clicks that converted). Compare against the maximum cost per enquiry you calculated in chapter five. If you're under, the campaign is working. If you're over by a small margin, refine the keywords and the landing page. If you're over by a wide margin and have been for two weeks, the channel may not be the right fit for your offer right now.

What to do this week

Set up your primary conversion event in Google Ads, install the tags on your website, test the tracking with a real form submission and check that the conversion appeared in the dashboard within twenty-four hours. Enable call conversions if you take phone enquiries. Block thirty minutes at the end of the month to do your first offline-conversion upload. Don't optimise the campaign on conversion data until you have at least two weeks of tracked data, because the early numbers are too noisy to read.

In the final chapter we put all of this into a calm weekly routine that takes thirty minutes and keeps the account healthy without taking over your week. Review results and improve the system is the recurring principle, and conversion tracking is what makes "review results" a real activity rather than a phrase.