# Maximum CPA Calculator Find the ad cost headroom per sale after included costs and your target contribution. [Open this tool](https://whatson.pk/cpa-calculator/) Category: Seller Pricing & Profit An advertising allowance should start with what remains after the sale's other costs and your profit target. Enter order economics and the contribution you want to protect. Compare the available ad headroom with your measured acquisition cost. ## Inputs and controls * Order revenue (PKR). Allowed range: 0.01 to 1000000000 * Product cost (PKR). Allowed range: 0 to 1000000000 * Packaging (PKR). Allowed range: 0 to 1000000000 * Net seller shipping expense (PKR). Allowed range: 0 to 1000000000 * Fee on order revenue (%). Allowed range: 0 to 100 * Other non ad cost (PKR). Allowed range: 0 to 1000000000 * Target profit after ads (PKR). Allowed range: 0 to 1000000000 ## How to use * Enter order revenue, product cost, packaging, net seller shipping expense, fee on order revenue, other non ad cost and target profit after ads. * Select Calculate result. Read the returned values alongside the assumptions below before copying, exporting or acting on the result. ## Why use this tool A per sale ceiling makes the pricing constraint visible before an advertising budget is committed. ## Before relying on the result Negative headroom means the chosen profit target is not met even before ads. This is a per order arithmetic ceiling, not a campaign performance forecast. ## Tool limitations Negative headroom means the chosen profit target is not met even before ads. This is a per order arithmetic ceiling, not a campaign performance forecast. ## Questions ### What does negative headroom mean? The chosen contribution target is already missed before advertising. A zero ad spend would not repair that baseline. ### What should I check before using Maximum CPA Calculator? Check Order revenue, Product cost, Packaging and Net seller shipping expense. Use the exact units shown beside the controls and replace any example values with your own inputs. Source page last modified (UTC): 2026-10-01T18:05:21+00:00 This profile describes the tool. It does not execute it or supply a professional certification.