How Much Should a Small Business Spend on Google Ads?

In our last post we covered how to tell if your social media marketing is actually working. This month we’re tackling a different question that comes up just as often: how much should you actually be spending on Google Ads?

There’s no single number that works for every business. Anyone who gives you a flat answer without asking about your industry, your goals, or your market is guessing. But there are real ways to figure out a number that makes sense for your business specifically. Here’s how to think about it.

Start with revenue, not a random budget

A common mistake is picking an ad budget out of thin air. Fifty dollars a day sounds reasonable until you realize it might be way too much for a small local service business, or nowhere near enough for a competitive market.

A better starting point is your revenue. A common guideline is spending somewhere between 5 and 10 percent of your revenue on marketing overall, with a portion of that going to paid search specifically. If you’re a newer business trying to grow quickly, you may need to spend closer to the higher end or even more. If you’re established and just supplementing organic and referral traffic, the lower end may be enough.

This isn’t a perfect formula, but it keeps your ad spend tied to the size of your business instead of a number that sounds good.

Figure out what a customer is actually worth to you

Before you set a budget, you need to know your numbers. Specifically, you need to know your average customer value and how much you can afford to spend to acquire one.

If a new customer is worth $200 to your business over their lifetime, you can’t afford to spend $150 in ads to get them, at least not right away. But if a customer is worth $3,000, spending $150 to acquire them is a great deal.

Work out your numbers before you set a monthly ad budget. Look at your average sale, how often customers come back, and what your profit margin looks like. This tells you how much you can spend per lead and per customer while still making money.

Understand cost per click in your industry

Google Ads pricing works on an auction system, and the cost per click varies enormously by industry. A home service business might pay a few dollars per click. A law firm or a business in a highly competitive financial category might pay fifty dollars or more per click for their most valuable keywords.

Before setting a budget, look up typical cost per click for your industry. Google’s Keyword Planner gives you a rough idea, and your ad account will show you real data once you’re running campaigns. If your industry has a high cost per click, you need a bigger budget to generate meaningful lead volume. If it’s low, you can get real results with less.

A simple way to estimate your starting budget

Here’s a straightforward way to land on a number if you’re just getting started. Decide how many leads or sales you want per month from Google Ads. Find your average cost per click for your industry and keywords. Estimate your conversion rate, meaning how many clicks it typically takes to generate one lead. A common starting estimate for a new campaign is somewhere between 2 and 5 percent, though this varies by industry and will become more accurate once you have real data.

Multiply your target number of leads by the cost per click and divide by your estimated conversion rate. If you want 20 leads a month, your cost per click is $5, and your conversion rate is 4 percent, that would look like (20 X $5) / .05 = $2000. You would need roughly $2,000-5,000 in monthly ad spend to hit that goal depending on your real conversion rate.

This is a starting estimate, not a guarantee. Your actual numbers will become clearer after a month or two of real campaign data.

Signs your budget is too low

Here are a few signs that your Google Ads budget isn’t giving you a fair shot:

1. Your campaigns are limited by budget for most of the day, meaning Google is telling you it could show your ads more but you’ve run out of money.
2. Your impression share is low, meaning your ads are only showing up for a small percentage of the searches you’re eligible for.
3. You’re only getting a handful of clicks per week, which usually isn’t enough data for Google’s system to optimize effectively.

If any of these apply to you, the problem might not be your strategy. It might just be that your budget is too small to compete in your market.

Signs your budget might be too high

On the other end, there are signs you might be spending more than you need to:

1. You’re generating far more leads than your business can actually follow up with and close.
2. Your cost per lead is climbing steadily without any change in quality.
3. You’re running ads for keywords that get clicks but rarely lead to real inquiries.

Spending more doesn’t always mean better results. At a certain point, more budget just means more of the same performance, not improved performance.

What this looks like in practice

A budget conversation should always start with your goals, not a generic number. A new business trying to establish itself in a competitive market will need a different budget than an established business using ads to supplement steady organic traffic. A business with a high customer value can afford to spend more per lead than one with a lower margin.

The businesses that get the most out of Google Ads are the ones that treat the budget as a number to test and refine, not a number to set once and forget. Start with a realistic estimate based on your numbers, watch the results closely for the first month or two, and adjust from there.

If you’re not sure what a reasonable budget looks like for your business, that’s exactly the kind of question our team at TOTAL Advertising can help you work through. We manage Google Ads campaigns across a range of industries and can give you a realistic picture of what it takes to hit your goals.

Book a free consultation with TOTAL Advertising here.

Written by

Amari Williams, Senior Search Marketing Specialist