How much should a small business spend on Google Ads?

The number nobody wants to give you

Ask an agency what you should spend on Google Ads and you’ll usually get "it depends" followed by a meeting invite. It does depend. But there is a floor, it is knowable, and you can work it out yourself in about ten minutes with numbers you already have.

We run Google Ads for clients, so we have an obvious interest in you spending more. Read the rest with that in mind. The reason we’d rather tell you the floor honestly is that the accounts that fail slowly are worse for us than the ones that never start. A client who spends four hundred a month for six months, gets nothing, and concludes advertising doesn’t work has lost more than money.

What a small budget actually buys

Google Ads is an auction. You are not buying a fixed quantity of anything. You’re buying clicks at whatever the market rate is for the words your customers type, and the market rate is set by whoever else wants those same customers — including national advertisers with budgets that make yours a rounding error.

The mechanical problem with a small budget is sample size. Say your clicks cost ten dollars. Five hundred a month buys fifty clicks. If one in twenty of those turns into an inquiry, you get two or three leads. Two or three leads is not a result. It is noise. You cannot tell a good month from a bad one, you cannot tell which keyword worked, and you certainly cannot tell whether the ad or the landing page was the problem.

So you sit at the bottom of the learning curve for months. Google’s bidding systems need conversion volume to optimize against, and you are not giving them any. Everybody involved is guessing.

Work out your own floor in four steps

This is arithmetic, not strategy. Do it on paper.

1. Find your average click cost. Google’s Keyword Planner will give you a range for your keywords in your city, free, before you spend anything. Take the top of the range, not the bottom.
2. Estimate your conversion rate — what share of people who land on your page actually call or fill in the form. If you have no data, assume something modest rather than something flattering.
3. Divide. Click cost divided by conversion rate gives you a rough cost per lead. Ten-dollar clicks at a five percent conversion rate is two hundred dollars a lead.
4. Multiply by thirty. Thirty leads a month is roughly the point where a month of data starts telling you something rather than shrugging at you. That product is your realistic floor.

Why thirty leads and not five

Thirty is not a magic number and we’re not going to pretend it came from a study. It is a working rule. It is roughly where a month-over-month change stops being explainable by chance, and roughly where you have enough won-and-lost outcomes to tell whether the leads are any good rather than just numerous.

The distinction matters more than people expect. Plenty of accounts generate leads and no customers, because the keywords attract people who want a price and nothing else. You cannot see that pattern in three leads. You can see it clearly in thirty.

The management fee is part of the budget

A thing agencies skate past: whatever you pay someone to run the account comes out of the same pocket the ad spend does. If your total marketing budget is a thousand a month and three hundred of it is management, you are running a seven hundred dollar account, not a thousand dollar one.

That is why very small ad budgets and paid management are a bad fit for each other. The fee eats a share of the spend big enough to matter, and the account is too small to earn it back. We tell people this before they sign, because the alternative is telling them in month five.

Your floor is higher in some industries than others

Click costs are not evenly distributed. Anything where a single customer is worth thousands of dollars — legal, insurance, home services, medical — attracts bidders who can afford to pay a lot for a click and still profit. A salon and a personal injury firm are not playing the same game, and a budget that is generous for one is invisible in the other.

This is why "what should I spend" has no universal answer, and why anyone who gives you one without asking what you sell is guessing. The number that matters is not what other small businesses spend. It is what a lead costs in your category, in your city, this quarter.

If you can’t clear the floor, don’t start

This is the part we’d rather say out loud. If the arithmetic says you need two thousand a month and you have six hundred, running a six hundred dollar campaign is not a smaller version of the right plan. It is a different plan, and it is a worse one, because it spends real money on a sample too small to learn from.

Underfunded ads have a specific failure pattern. Nothing dramatic happens. You get a trickle. You keep going because stopping feels like giving up. Twelve months later you have spent seven thousand dollars and learned nothing you could act on.

What to do instead of underfunded ads

None of these are as fast as advertising. All of them are better than advertising you can’t afford to run properly.

• Fix the destination first. Whatever you eventually spend on clicks gets multiplied by how well the page converts. Improving the page costs once and improves everything afterwards, including the ads you can’t afford yet.
• Get your Google Business Profile properly filled in and get reviews. The map results sit above the ads for a lot of local searches and cost nothing per click.
• Work the list you already have. Past customers, people who inquired and didn’t buy, referral sources. They already know you, which is the expensive part of advertising, and reaching them costs a fraction of reaching a stranger.
• Save up and run a real campaign for three months rather than a token one for twelve. A short, properly funded test tells you something. A long, starved one doesn’t.

Seasonality can move your floor, and usually upward

One thing the arithmetic above misses: the auction is not the same in January as it is in July. In South Florida a lot of categories have a season, and in season everyone bids harder. Home services spike after storms. Family law gets busier once the holidays are over. Tour and event operators get expensive in the run-up to the months people actually book.

If your busy season is three months long, a budget that clears the floor in the quiet months may fall well below it exactly when it matters. That is an argument for concentrating spend rather than spreading it flat across twelve months, and it is one of the few cases where running ads for part of the year and stopping is a deliberate strategy rather than a failure.

Work out your floor using in-season click costs, not the annual average. The average will flatter you, and it will flatter you at the worst possible time.

What we actually ask before quoting an ad budget

For what it’s worth, these are the questions that settle it on a first call. None of them are about the ads.

• What is a customer worth to you over the whole relationship, not the first invoice?
• How many inquiries a month can you actually handle before service slips?
• How fast does someone answer a form submitted at seven in the evening?
• Do you have a page for this specific service, or only a homepage?
• What have you already tried, what did it cost, and what happened?

When ads are clearly the right call

We are not against advertising — we run it. Ads are the right answer when you need customers now rather than in six months, when nobody knows you exist yet, when you have no past-customer list to work, or when demand for what you sell is genuinely searched for rather than something people have to be reminded they want.

A brand new business with no list and a real budget should almost certainly run ads before it does anything else. The point of this whole post is not that ads are bad. It’s that a budget below the floor buys data, and data at that volume isn’t worth what it costs.