Ad Budget Calculator for Lead Generation
Set the leads you need, the cost per lead you expect and the percentage that becomes a sale. The calculator shows the media requirement and management fee.

The calculation in plain words
Media budget is leads wanted multiplied by expected cost per lead. The management fee then follows the DigiStreet rule: the higher of the applicable percentage of media or ₹50,000, plus GST. Expected sales are leads multiplied by the lead-to-sale rate.
Cost per lead starts empty because one default would be a made-up market claim. Use your own account history, platform plan or a written assumption. The result is planning arithmetic, and changing any field makes the commercial effect visible before a campaign brief is signed.
Change the inputs. Read the result.
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The lead number needs a sales context
A target of 100 leads means little until the team agrees what counts as a lead. A completed form, booked appointment, verified application and sales-qualified conversation are different events. Write the definition beside the target before using the output in a forecast.
The expected cost per lead should come from evidence or a declared planning assumption. Recent account history is usually the clearest starting point. When there is no history, use a range and run the calculator twice. That produces a low and high budget instead of a false point estimate.
Lead-to-sale rate belongs to the sales process, not the advertising platform. If ten out of every hundred qualified leads become customers, enter 10%. If the rate refers to raw forms rather than qualified leads, label it that way in the internal plan so the result is not compared with a different stage later.
Media, fee and sales sit on separate lines

The media line funds platform delivery. The fee line covers campaign management under the published rate bands. Total outlay is both figures together before GST. The expected-sales line applies the close rate to the lead target and rounds the planning number to two decimal places.
If the calculated media is below the point where 15% reaches ₹50,000, the minimum management fee is used. The result calls this out. A small media test can therefore have a higher effective fee percentage than a larger account, even though the written rule stays the same.
A result is easiest to use when paired with a time period. These fields describe one month. If the sales cycle needs three months of lead flow, prepare a monthly view for each period rather than multiplying one month without checking seasonality, capacity or expected changes in cost.
Change one assumption at a time
First hold the lead target and close rate steady, then test a lower and higher cost per lead. This shows how sensitive the media requirement is to auction conditions. Next hold cost per lead steady and change the target to match what the sales team can actually answer.
A second useful test changes the close rate. Better qualification, faster calling and clearer offers can change the number of sales produced by the same lead target. The calculator does not claim that improvement; it shows the arithmetic so the team can see what a one-point or five-point change would mean.
Keep the assumptions with the output. A number without its input values becomes difficult to audit later. The result panel stays visible as the fields change, and the quote button records a separate analytics event when a visitor decides to speak with the team.
Budget follows the conversion path
Lead generation begins before the first ad. The offer needs a useful reason to respond, the page needs relevant proof and the form should collect only the details needed for the next conversation. Each extra field can reduce volume, while too little information can push poor-fit leads to sales.
Tracking should connect the platform click to the lead record and, where possible, to qualification. Without that connection, the account can be trained towards cheap forms instead of workable opportunities. A CRM stage, offline conversion import or even a disciplined weekly lead sheet can improve the feedback loop.
Creative should match the decision. A prospect comparing suppliers may need evidence and detail. A prospect discovering a new problem may need a clear explanation first. Budget is wasted when every stage receives the same message and the same landing page.
Turn the number into a testable brief

A practical brief records the lead definition, target, expected cost per lead, close-rate assumption, media amount and management fee. It also names the campaign period, markets, platforms, creative inputs and who reports whether a lead was worth pursuing.
The budget can be split only after the account structure is clear. Dividing a small amount across too many cities, audiences or platforms can leave every group short of data. A focused test often produces a clearer decision than a wide plan with too little spend behind each idea.
Use the performance fee calculator when the media figure is already approved. Use the break-even calculator when order value and margin are the starting point. Together, the three tools show the plan from demand, spend and unit-economics angles without mixing those questions into one opaque output.
Turn the result into a written decision
Copy the lead target, expected CPL and close-rate assumption into the working brief. Review the three inputs after the first reporting period so the next budget is based on observed cost and sales feedback.
When two scenarios are close, choose the one the sales team can support. Paying for more leads than the team can answer quickly creates waste that a lower platform CPL will not correct. Assign an owner for the first response and the weekly lead-quality review.
Build a range when the first CPL is uncertain
Two calculator runs are more useful than one borrowed benchmark when a campaign has no history. Use a lower CPL that the offer might achieve and a higher CPL that the team can still afford. Keep the lead target and close rate unchanged. The difference between the outputs is the media contingency required if the auction or conversion path performs closer to the cautious assumption.
After launch, replace the assumption with the cost of leads that match the written definition. If raw form volume includes duplicates, job seekers or unreachable records, remove them before calculating a qualified CPL. The next month’s budget should use the number that sales can recognise. That keeps growth planning tied to workable demand rather than a platform total that looks efficient but creates little sales capacity.
Evidence from DigiStreet client work



Questions about this calculator
How is the media budget calculated?
Media budget is the number of leads wanted multiplied by the expected cost per lead.
Why is cost per lead empty?
It is empty because the correct figure must come from your evidence or a clearly stated planning assumption.
How are expected sales calculated?
Expected sales equal the lead target multiplied by the lead-to-sale percentage.
Does the estimate include the management fee?
Yes. The result shows media, DigiStreet’s fee and total outlay as separate figures before GST.
Can I use a decimal close rate?
Yes. You can enter percentages such as 7.5, and the calculator applies that rate to the lead target.
Is the output a forecast?
It is planning arithmetic based on the inputs you enter. Keep those assumptions with the result when comparing scenarios.