How to Calculate Your Google Ads Budget (Without Burning Money)
A simple formula based on your average ticket, margin, and customer goal — with real-world ranges for local businesses.
In this article
The most common question we get isn't "Does Google Ads work?" It's "How much should I spend so I don't lose money?" The answer depends on three numbers you already have: your average ticket, your margin, and how many customers you need each month. If you're not sure what they are, this article will help you work them out before you spend a single dollar.
The formula in 3 steps
Before you open Google Ads, figure out how much you can pay for a new customer without losing money. It's not guesswork: it's simple math with your real numbers.
$500
Recommended minimum / month
5:1
Typical leads per closed deal
60–90
Days to optimize
- 01
Set your customer goal
How many new customers do you want each month? Example: 8 customers for a mid-ticket service.
- 02
Work out how many leads you need
If you close 1 out of every 5 quotes, you need 40 leads to land 8 customers. Adjust for your actual close rate.
- 03
Find your maximum cost per lead
Divide your margin per customer by the number of leads you need per customer. That's your ceiling per lead.
How much should you spend the first month?
For local businesses in Connecticut and similar markets, we recommend starting with $500 to $1,500 a month in ad spend (separate from management fees). Less than that usually doesn't generate enough data for the algorithm to learn what works.
Adjust your budget every 30 days based on data, not gut feeling.
The first 30 days are a learning period: Google needs conversions (calls, form fills) to optimize. If you pause too early or change everything every week, the campaign never gets out of exploration mode.
By type of business
- Emergency services (plumbing, locksmiths): $800–$2,000/month — demand is immediate.
- Contractors (remodeling, painting): $500–$1,500/month — longer sales cycle.
- Restaurants / catering: $600–$1,800/month — combine search and remarketing.
- Professionals (attorneys, accountants): $1,000–$3,000/month — high ticket, stiff competition.
Signs you're on track (and when to worry)
- You're getting calls or form fills with real intent — people asking about price, service area, and availability.
- Your cost per lead drops or levels off after weeks 3–4.
- You can attribute at least 2–3 sales to the channel in the first month.
- Irrelevant keywords are getting weeded out with a negative keyword list.
“Don't invest what you can't afford to lose; invest what you can measure.”
— The LBS Team
Red flags: lots of clicks but zero calls (a website or landing page problem), cost per lead rising without more volume, or leads who never pick up (wrong targeting). In those cases, the budget isn't the problem — the funnel needs fixing.
Key takeaways
- Calculate your ceiling per lead (margin ÷ close rate) before setting a budget.
- Start with $500–$1,500/month in ad spend for local businesses.
- Give it at least 30 days of data before deciding it "doesn't work."
- Track calls and form fills — not just clicks.
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