PPC bid changes should be guided by results after the click. Focus first on conversions, cost per conversion, and return on ad spend to decide where to increase, reduce, or maintain bids.
PPC bid metrics: conversions
Conversions show whether clicks produce the outcome your business needs, such as a sale, qualified lead, phone call, or appointment. Raise bids carefully on keywords, audiences, devices, and locations that consistently generate valuable conversions.
Do not raise a PPC bid based on click volume alone. A high-traffic segment that produces few useful conversions may need a lower bid, a negative keyword, or a landing-page review.
PPC bid metrics: cost per conversion
Cost per acquisition, or CPA, measures how much you pay for each conversion. Compare each segment’s CPA with your target CPA and the value of the resulting customer or lead.
- Increase PPC bids when a segment produces enough qualified conversions below your target CPA.
- Reduce PPC bids when CPA remains above target without a clear business reason.
- Wait for enough data before changing bids, rather than reacting to a few clicks or one day of results.
PPC bid metrics: ROAS and profit
For ecommerce campaigns, return on ad spend, or ROAS, shows how much revenue is generated for each advertising dollar. Use it with gross profit, because revenue does not account for product costs, shipping, discounts, or returns.
For lead generation, lead quality matters as much as CPA. Where possible, use CRM data, sales-qualified leads, or offline revenue to identify which campaigns create customers rather than only form submissions.
PPC bid metrics: supporting performance data
Use impression share, lost impression share, click-through rate, and average cost per click as supporting signals. Strong conversion results combined with lost impression share due to rank may support a higher PPC bid, while a weak click-through rate can indicate poor ad relevance.
Review performance by search term, device, geography, audience, and time of day. Reliable bid decisions depend on clear targets and consistent measurement, supported by accurate analytics reporting.