How Much Should a Small Business Spend on Google Ads?

For a small business considering Google Ads, one of the most common questions is:

How much do I actually need to spend for it to be worthwhile?

There is no universal minimum spend that works for every business. Google itself does not require a minimum spending commitment, and businesses can set their own campaign budgets. 

But that does not mean every budget is commercially useful.

In practice, your budget needs to be large enough to compete for the searches that matter in your industry and generate enough data to make sensible decisions.

For many small businesses, a total monthly budget of only $500 is probably not enough to engage an agency like MoMac and still leave enough money for meaningful advertising spend.

As a general starting point, around $500 per month in direct Google Ads spend plus a separate management budget starts to create something more workable.

Is $500 per month enough for Google Ads?

Potentially, yes.

For some small or locally focused businesses, $500 per month in direct advertising spend can be enough to start testing a campaign.

The important distinction is that the $500 is going to Google for the advertising itself. If an agency is professionally setting up, monitoring and optimising the campaign, there will normally be management costs on top of that.

At MoMac, our entry-level ongoing management can start from around three hours per month, depending on what the campaign requires.

That does not mean $500 is a magic number or a minimum across every industry. Some businesses can compete effectively with a relatively modest budget. Others operate in markets where the cost of clicks and level of competition mean a substantially larger spend is required.

Google also provides recommended budget information where campaigns are losing visibility because of budget constraints. A lower budget can still run, but the ads may not appear for every relevant search.

Small business does not have to mean small marketing budget

The size of the business does not automatically determine how aggressively it should market.

A newly established service business may deliberately invest a larger percentage of its revenue into customer acquisition because it wants to grow quickly.

That can be a perfectly reasonable strategy.

At the beginning, the first customers can be especially valuable. Good customers can generate repeat work, reviews and referrals. Those referrals can then create more opportunities without requiring the same advertising spend each time.

For that reason, a new business may accept a higher customer acquisition cost initially while it builds momentum.

The important thing is that the business understands what it is investing, what a new customer is worth and whether the strategy is financially sustainable.

When is a Google Ads budget too small?

There is no single dollar figure where Google Ads suddenly stops working.

Google lets advertisers control their own average daily budgets, and those budgets can be changed over time. 

The more important question is whether the budget is enough to compete in the particular market.

If your customers are searching in a small geographic area and the relevant keywords are relatively inexpensive, a modest budget may generate useful traffic.

If you are competing nationally in a crowded industry where many businesses are bidding aggressively for the same searches, the same budget may disappear quickly.

The campaign budget therefore needs to consider:

• Competition
• Search volume
• Geographic area
• Cost per click
• Value of the product or service
• Number of campaigns or services being promoted
• Desired lead volume
• How aggressively the business wants to grow

The right budget is the one that gives the campaign enough opportunity to perform without putting the business under unnecessary financial pressure.

Why is there an initial Google Ads setup cost?

Setting up Google Ads properly involves more than creating an account and writing an advertisement.

There is usually some upfront work required to understand the business and build the campaign foundation.

At MoMac, that can involve discovery, account setup or connection, gathering assets, competitor research, keyword research and creating the initial campaign structure.

We generally charge this as a separate one-off setup cost.

That allows the ongoing monthly management fee to reflect the actual work required to manage and optimise the campaign rather than trying to recover all of the initial setup cost through a long-term contract.

This also suits the way we prefer to work. We do not necessarily require clients to sign lengthy one, two or three-year agreements simply to start advertising.

What does Google Ads management actually involve?

Once a campaign is running, it should not simply be left alone.

Good campaign management is about regularly checking what is happening and making informed adjustments.

Without giving away every part of our process, MoMac’s ongoing Google Ads management can include reviewing campaign performance, refining keywords, testing advertisements, adjusting budgets and bidding, reviewing search terms and adding negative keywords where appropriate.

A negative keyword, for example, can help prevent your advertisements appearing for searches that are clearly irrelevant to the business.

The team also checks that campaigns are set up correctly, advertising is running as expected and budgets are being used appropriately.

Just as importantly, we talk to the client.

Digital data can tell us a lot, but the business owner often knows things that the advertising platform cannot.

They might tell us that the phone has been noticeably busier, that a particular service is generating poor-quality enquiries or that one type of customer is proving much more valuable than another.

That two-way communication helps us make better decisions.

Is monthly reporting worth paying for?

For businesses with the budget available, we generally think reporting is valuable.

A monthly report creates a natural opportunity to review what has happened, discuss what is working and identify what needs to change.

It also makes it easier to connect the advertising data with what is actually happening inside the business.

Some clients may choose a leaner management option without detailed monthly reporting. Others benefit significantly from having regular reporting and strategy conversations.

There is no point producing a complicated report simply for the sake of it.

The purpose should be to answer practical questions such as:

Are we generating enquiries? What is it costing us? Which campaigns are working? Where can we improve?

What makes a Google Ads campaign successful?

Ultimately, the best result is not clicks.

It is business.

For a lead-generation campaign, that means enquiries and sales.

For e-commerce, that means purchases and revenue.

The campaign still needs to make financial sense.

A low cost per click may look good in a report, but if none of those visitors become customers, it has limited commercial value.

Likewise, a relatively expensive lead may still be highly profitable if the product or service being sold has a high value.

This is why we pay attention to measures such as cost per lead, conversion cost and return on advertising spend rather than judging performance from traffic alone.

As a very broad principle, the revenue generated should be comfortably greater than the amount being spent on advertising.

For example, if a business spends $1,000 on ads and generates only $1,000 in sales, that usually does not represent a strong result once the actual cost of supplying those products or services is taken into account.

A business might instead be looking for two or three times the advertising spend in attributable revenue as an early benchmark, with stronger returns preferred.

That is not a universal target, though. Margins, repeat purchases, lifetime customer value and the cost of delivering the product or service all affect what a profitable return actually looks like.

Can you track every Google Ads sale or lead?

No.

This is one of the limitations businesses should understand when reviewing digital marketing performance.

Some conversions are very easy to track.

A person clicks an ad, lands on a website and submits a tracked enquiry form. There is a relatively clear connection between the advertisement and the lead.

The real customer journey can be much messier.

Someone might click an ad, browse the website, leave and then phone the business later.

They might send an email directly.

They might see the Google Ad but purchase in-store.

In those cases, the campaign may have contributed to the sale without receiving full attribution.

The opposite can also happen.

Someone may have originally heard about the business through a referral, seen its vehicles around town, followed it on Facebook and watched several videos. Later, they Google the company name, click the paid advertisement and submit an enquiry.

Google Ads may receive the conversion credit, even though several other marketing touchpoints helped create the customer.

That is why attribution data is useful, but it should not always be treated as the complete story.

Look at Google Ads alongside the wider business

When reviewing a campaign, we like to combine platform data with what is actually happening on the ground.

Are enquiries increasing?

Are sales improving?

Are staff hearing customers mention Google?

Are particular services becoming busier?

Has overall website traffic increased?

This does not mean automatically giving Google Ads credit for every positive change.

It means recognising that marketing channels often work together.

The strongest marketing strategies tend to take a broader view rather than expecting one platform to explain every customer decision.

So how much should a small business spend on Google Ads?

For a small Christchurch business using an agency, around $500 per month in direct ad spend is a reasonable starting point to consider in some markets, with professional management fees added separately.

If the business wants to be more aggressive, compete in a busier market or generate leads more quickly, the appropriate budget may be considerably higher.

The size of the business is only one factor.

The bigger questions are what a new customer is worth, how competitive the market is, how quickly the business wants to grow and what return the campaign is generating.

At MoMac, we would rather recommend a realistic budget that has a proper chance of working than take a small advertising budget simply for the sake of running ads.