To start Google Ads or Meta Ads in 2026 you need enough budget to buy meaningful data, and for most small businesses that means roughly €15 to €30 a day per platform, or about €500 to €900 a month, for a first test of two to three months. You can start with less, but below that level, results are noisy and it can take so long to learn anything that the test is not worth running. These figures are our practical rule of thumb, not an official platform minimum.
Here is how to calculate the minimum for your own situation, what happens when you spend too little, and how to run a small test without wasting it.
What is the actual minimum the platforms allow?
Technically, very little. Meta lets you set daily budgets of a few euros, and Google Ads has no meaningful minimum. But what the platforms allow and what you need to learn something are different. The real constraint is statistical: you need enough clicks and enough conversions to tell a good campaign from a bad one.
Think of it as buying information. A tiny budget buys a tiny sample. If five out of a hundred visitors might convert, then after 100 visitors you could see anywhere from one to ten conversions by chance alone. That is not enough to decide anything.
How do you calculate your own minimum?
Work backwards from the outcome you want, using a simple formula.
- Estimate your cost per click. This varies by industry, location and competition. Use Google’s Keyword Planner for search, or the platform’s delivery estimates for Meta, as a first guess.
- Estimate your conversion rate from click to lead or sale. For a small service business with a decent page, 3% to 8% from click to enquiry is a plausible planning range, though it depends heavily on your offer and page.
- Decide how many conversions you need for a fair test. We like at least 20 to 30 per campaign before drawing firm conclusions, because it moves you out of pure noise.
- Multiply. Conversions needed, divided by conversion rate, gives clicks needed. Clicks needed times cost per click gives the budget.
A worked example, with illustrative numbers: if your cost per click is €1.50 and your conversion rate is 5%, you need 20 conversions, which takes 400 clicks, costing about €600. Spread across a month, that is €20 a day. If your cost per click is €4 in a competitive market, the same test costs €1,600, and you should rethink the channel or the keywords, not squeeze the budget.
Why does a very small budget tend to fail?
There are four reasons, and they compound.
- Not enough data to optimise. Automated bidding on both Google and Meta learns from conversions. With only a handful per week, the system stays in a shaky learning state. We explain the mechanics in the Meta Ads learning phase.
- You cannot test properly. Splitting a €10 daily budget across three ad variations gives each too few impressions to compare.
- One bad day dominates. A single wasted click costs a large share of your total.
- You lose patience too early. Slow, expensive feedback makes people give up before the campaign has had a chance.
What should a first-test budget look like by business type?
| Business type | Suggested starting budget | Why |
|---|---|---|
| Local service (plumber, clinic, trades) | €500 to €900 a month on Google Search | High intent, clear keywords, calls count as conversions |
| E-commerce with low-priced products | €900 to €1,500 a month, Meta plus Google Shopping | Low order value means you need more sales to cover costs |
| B2B lead generation | €1,000 to €2,000 a month | Higher cost per click, longer sales cycles |
| Brand awareness for a new business | €300 to €600 a month on Meta | Cheaper reach, but results are harder to measure |
These ranges come from our own planning experience and your market may differ. For a deeper look at splitting the first money, see Meta versus Google Ads: where to put your first €5,000, and for scaling steadily afterwards, the Meta Ads budget ladder from €500 to €10,000.
Which platform should come first?
If people already search for what you sell, start with Google Search, because it captures existing demand and you pay only for people actively looking. If your product is visual, impulse-driven, or people do not know they need it yet, Meta is more natural because it creates demand. If you can afford only one, choose based on where your customers are in their decision, not on which platform is more fashionable. Running both with a tiny budget each is worse than running one properly.
Is the ad budget the only cost?
No, and this catches many owners out. Add the cost of:
- A landing page that converts. Sending paid traffic to a weak page wastes spend. See our notes on ad and landing page message match.
- Creative: images, short videos and copy. Even a modest budget needs a few variations.
- Tracking setup: conversion events, analytics and consent. Without it, you will not know what worked.
- Management time or fees: yours, a freelancer’s or an agency’s. A common mistake is spending everything on ads and nothing on managing them.
As a rough budgeting rule, keep a reserve of 10% to 20% of your test budget for fixing problems you discover, such as a broken form or a tracking error, rather than committing every euro on day one.
How do you run a small test without wasting it?
- Pick one goal and one campaign. Do not split into five campaigns.
- Choose a narrow audience or keyword set. Specific beats broad on a small budget.
- Use two or three ad variations at most, and let them run for a week or two before judging.
- Set a clear stop rule. For example: “If after €600 we have fewer than 10 leads, we pause and review the offer and page.”
- Review weekly, change slowly. Changing settings daily resets learning and hides what caused a result.
- Track real outcomes, not just clicks: enquiries, calls and sales.
When should you not advertise yet?
Hold off if you cannot afford at least a three-month test, because one month rarely shows the pattern. Hold off too if your website does not load quickly or lacks a clear action, if you have no way to track enquiries, or if you cannot yet say who your customer is and what they get. Spending on ads before these basics exist is like pouring water into a bucket with holes.
The bottom line
The minimum budget is the amount that lets you reach a conclusion. For most small businesses that is about €500 to €900 a month for a single channel over two to three months, adjusted to your cost per click, conversion rate and the number of conversions you need. If that sum is out of reach right now, put the money into improving your website, collecting reviews or building organic content first, and start ads when you can fund a proper test.
What if your market has very expensive clicks?
In some niches, such as legal, insurance, finance and home improvement, clicks can cost many times the average. Do not respond by spreading a small budget across many keywords. Narrow instead: focus on the few high-intent phrases where a customer is ready to buy, restrict location to your real service area, and use exact and phrase match to avoid broad, costly queries. If even that does not fit your budget, consider a cheaper channel, such as local listings, content or referrals, until your margin can support paid search.