One of the most common questions from Australian business owners considering paid advertising is: "How much should I spend?" The honest answer: it depends on your market, goals and margins — but there are systematic ways to figure it out. Here's how to set an intelligent PPC budget and know when to scale it up.

🎯 Budget philosophy: Your PPC budget isn't a fixed expense — it's an investment with a measurable return. Once you know your cost per conversion and the average value of a converted customer, setting the right budget becomes a financial decision, not a guess.

Start with Your Business Math

Work backwards from your business goals. What is a new customer worth to your business (lifetime value)? What percentage of that value can you afford to spend acquiring a customer (target CAC)? What conversion rate does your website achieve from paid traffic? These three numbers create the framework for a logical budget decision.

Understanding Keyword Costs in Your Industry

PPC costs vary dramatically by industry. Highly competitive B2B services (legal, financial, insurance) may see cost-per-click rates of $20–$80 or higher. Local trades services typically run $5–$20 per click. Retail and e-commerce often sits below $5. Use Google Keyword Planner to see estimated CPCs for your target keywords before committing budget.

Setting a Starting Budget

For most Australian businesses new to PPC, a minimum viable test budget for Google Ads is $1,500–$3,000 per month. This provides enough data across 60–90 days to evaluate performance meaningfully. Budgets below this in competitive markets often produce insufficient data volume to learn from and optimise against.

When to Scale

Scale your PPC budget when your cost per conversion is consistently profitable and you have headroom to grow within your target market. If you're generating leads at $50 each and they're worth $500 to your business, increasing your budget is a straightforward financial decision. Scale in 20–30% increments rather than doubling overnight — sudden large increases can disrupt campaign learning phases.

🚀 DigiWolf approach: We work with Australian businesses to set intelligent PPC budgets, build campaigns that generate profitable returns, and scale investment systematically as we prove the numbers. Book a free session to discuss what paid advertising could look like for your business.