How much should I spend on ads to start?
Your starting ad budget is set by your economics, not by a rule of thumb. Work backwards: what a customer is worth to you, what margin you keep, what you can therefore afford to pay to acquire one, and how many conversions you need before the numbers mean anything. A budget too small to produce steady conversions buys noise, not learning.
Start with what a customer is worth, not with a number
The right budget falls out of your own math, so do that math first. Three inputs decide it. The average value of a job or order. How often that customer comes back, or the lifetime value if you have repeat business. And the gross margin you keep after the cost of delivering the work.
Those three numbers tell you the most you can pay to acquire a customer and still be glad you did. That ceiling is the only anchor that matters. Anyone who tells you a starting number before asking what a customer is worth to you is guessing, and you should treat the number accordingly.
A worked example (illustrative numbers only)
Here is the method with made-up figures, purely as an illustration — these are not benchmarks and they are not your numbers. Say an average job is worth $1,000 to you and you keep 40% of that as gross margin, so $400. Say you would happily spend half of that margin to win a new customer. That gives you a target acquisition cost of roughly $200 per closed customer.
Now run it forward. If you close one in four of the leads you get, you need four leads per customer, so your target cost per lead is about $50. If you want the confidence of, say, twenty or thirty leads before you draw any conclusions, you are looking at somewhere in the range of $1,000 to $1,500 of spend before the data is worth reading. That is how you arrive at a monthly number: not from a chart, but from your own margin, your close rate, and the volume of data you need.
Why a budget that is too small is worse than no budget
Below a certain spend, you are not testing — you are buying noise. Ad platforms need conversion volume to optimize, and you need conversion volume to tell a real signal from a coincidence. Three leads in a month tells you almost nothing. Three leads that all came from one ad on one day tells you less than that.
This is the most common way owners waste money on ads. They spend just enough to be disappointed, conclude that ads do not work for their business, and stop. The honest version is that they never bought enough data to find out. If you cannot fund a budget that produces steady, countable conversions for at least a couple of months, put the money into the layers underneath — your site, your follow-up, your reviews — until you can.
Budget, management, and who owns what
Media spend and management are two different costs, and you should never see them blended into one line. Your ad budget goes directly to Google, Meta, or whichever platform you are running on, paid from your own account on your own card. A management fee is what you pay someone to build, run, and improve the campaigns. Keeping them separate is how you stay in control of the spend.
Paid media at Lasagna is scoped per engagement, because the work depends on how many channels, how many offers, and how much creative you need. What does not vary: you own your ad accounts, your pixels, your conversion data, and your audiences. If you ever leave, you leave with all of it.
Key takeaways
- There is no universal starting ad budget — it comes out of your margin and your close rate.
- Calculate the most you can afford to pay for a customer, then work back to a cost per lead.
- Fund enough spend to produce steady conversions, or you are buying noise instead of learning.
- Media spend goes to the platforms directly and is separate from any management fee.
- You should own your ad accounts and conversion data no matter who runs the campaigns.
Frequently Asked
How long before I know if my ads are working?
Judge ads on conversions, not on days. You need enough leads or sales to see a pattern rather than a coincidence, and for most local businesses that takes several weeks of consistent spend. Changing the budget, the offer, or the targeting every few days resets the clock and guarantees you never learn anything.
Should I start with a small test budget and scale up?
Scaling up is right, but the starting point still has to clear the minimum needed to generate countable conversions. A test budget that produces two leads a month is not a small test — it is an unreadable one. Start at the smallest number that reliably produces enough conversions to judge, then increase it once you see a cost per customer you are happy with.
Can an agency guarantee a return on my ad spend?
No, and anyone who does is selling you something. Ad results depend on your offer, your pricing, your market, your website, and how fast you follow up on leads — most of which sits with you, not with the person running the ads. What a good partner can promise is method, transparency, and a clear read on whether the money is working.
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Full-funnel paid social and search, conversion rate optimization, and funnel architecture — for businesses ready to scale.