Paid Ads Budget Estimator
A paid-media budget scenario should use the cost of a qualified action—not the cheapest platform form fill—and include enough room for controlled learning without assuming the estimate will be achieved.
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Start from leads, not from a round number
Ad budgets are often set as a round figure, such as "let's try ₹50,000 a month", with no link to what the business needs. This estimator works the other way round: start with the number of qualified leads you want each month and what each one is realistically likely to cost, then add room for testing. The result is a budget scenario you can check against your margins and your team's capacity to follow up.
The three inputs
Desired qualified leads. The number of enquiries per month your team can handle that are a genuine fit, meaning the right service, location and budget. Be realistic about follow-up capacity: more leads than you can call back quickly is wasted spend.
Planning cost per qualified lead. What you expect to pay for each qualified lead, not each form fill. If you have past campaign data, divide spend by the leads your team rated as qualified. If you're starting fresh, use a cautious figure and revise it after the first weeks of data. Costs vary widely by industry, location and competition.
Learning and variation buffer. Extra budget for testing ads, audiences and landing pages, and for normal month-to-month variation. New campaigns and new markets need a larger buffer than established ones.
How the result is calculated
Budget = qualified leads × cost per qualified lead × (1 + buffer). For example, 30 leads at 150 each with a 20% buffer gives 30 × 150 × 1.2 = 5,400 per month. The result is shown in whatever currency you used for the cost per lead.
Reading your result
The result is a monthly budget scenario, not a quote or a promised outcome. Then ask three questions:
- Can you afford it if lead costs come in higher than planned?
- Is the value per customer enough to make the cost per qualified lead worthwhile after your close rate?
- Is tracking ready to tell qualified leads from the rest? Without it, you can't tell whether the plan is working.
If the budget looks too high, the levers are the lead target, the cost per qualified lead (better targeting, landing pages and offers) or a phased start. Our guide on how to reduce cost per lead without losing quality covers the second. For management fees on top of ad spend, see paid ads pricing, and for how we run campaigns, Google Ads management.
Frequently asked questions
Does this include agency fees?
No. It estimates media spend only. Management fees are separate.
What cost per lead should I use?
Your own historical cost per qualified lead is best. Without it, start cautiously and update after the first weeks.
Why add a buffer?
Campaigns need room to test and learn, and costs vary from month to month.
Which platforms does this apply to?
The logic works for Google, Meta, LinkedIn or Microsoft Ads. Costs differ by platform, so plan each separately.