Value Based Bidding in Google Ads Explained

Value based bidding in Google Ads means telling the algorithm what each conversion is actually worth to your business, not just how many conversions you want. Instead of "get me conversions at $80 each," you're saying "find me the conversions worth the most, and here's exactly what each type is worth."

The distinction matters more than it sounds. Target CPA treats a $15 newsletter signup and a $5,000 closed deal as equally worth chasing, as long as both cost roughly the same to acquire. Value based bidding tells Google to chase the deal.

2026 also brought real structural changes to how this works. Target CPA and Target ROAS got their standalone names back in June, and a bigger behavioral change lands August 17: budget-limited campaigns stop quietly overperforming their stated targets.

01What Value Based Bidding Actually Does

Google's own documentation defines it as a subset of Smart Bidding that optimizes campaigns based on the value a conversion brings to your business, either maximizing conversion value within budget or hitting a specific Target ROAS. That's different from conversion-based bidding, which chases volume regardless of what each conversion is actually worth.

CustomerLabs' guide illustrates the gap plainly: with tCPA, Google will happily bid the same $10 for a $100 signup and a $500 purchase, since both cost the same to acquire. Value based bidding is what teaches the algorithm to tell those two conversions apart.

02The June 2026 Naming Change

Google's own Help Center confirms the update directly: starting June 2026, "Maximize conversions with a Target CPA" reverted to simply "Target CPA," and "Maximize conversion value with a Target ROAS" became "Target ROAS." Google states plainly that the underlying bidding behavior is unchanged, this is a labeling fix, not a mechanism change.

Kick Ads' coverage adds useful context for why this matters visually rather than functionally: a campaign labeled "Target CPA" now signals at a glance that it's running to a target, without needing to open bid settings to confirm it.

03What You Need Before Switching to Value Based Bidding

Google's requirements are specific. For Demand Gen campaigns, you need at least 50 conversions with value in the past 35 days, including a minimum of 10 in the past 7 days, or 100 conversions with value across all Demand Gen campaigns in 35 days. For Search and Shopping value-based experiments, you need at least two unique, non-zero conversion values already being tracked.

Groas' 2026 Smart Bidding guide adds the practical baseline most sources converge on: aim for 30+ conversions in the last 30 days before switching, with 50+ being meaningfully more reliable. Below that, the algorithm doesn't have enough signal to learn what actually predicts value.

04How to Assign Conversion Values Correctly

BrainmineTech's 2026 playbook gives a concrete example worth modeling your own account on: a SaaS company might assign $500 to a booked demo, $200 to a free trial activation, and $15 to a content download, each conversion action carrying a distinct, deliberate value rather than a flat number.

DeanLong's guide points to where this can go further: beyond simple revenue values, a Profit bidding approach imports the dynamic Cost of Goods Sold for each sale and bids toward actual profit margin instead of raw revenue, a more advanced setup worth growing into once basic value tracking is solid.

05Setting Your Initial Target ROAS

Google's own guidance for Demand Gen campaigns transitioning to tROAS is specific: review your campaign's actual ROAS (conversion value divided by cost) over the previous month, then set your initial target roughly 20% lower than that number. If your historical ROAS is 500%, start the target at 400% to give the campaign room to adjust during the switch.

Groas' guide reinforces why patience matters here: don't make bid or creative changes during the first 14 days after switching to value-based bidding. That window is when Google's AI model is training on the new signal, and interrupting it resets the calibration.

06Value Based Bidding vs Conversion-Based Bidding

A side-by-side of the core mechanical differences.

07Example Conversion Value Setup

Here's what assigning distinct, deliberate conversion values looks like in practice, following the SaaS example above.

Conversion Action          |  Assigned Value  |  Why
----------------------------------------------------------
Demo booked                |  $500             |  High-intent, sales-ready lead
Free trial started         |  $200             |  Mid-funnel, needs nurturing
Content download (gated)   |  $15              |  Early-funnel, low intent signal
Newsletter signup          |  $5               |  Lowest intent, brand awareness only

// In Google Ads: Tools > Conversions > [Action] > Value
// Set "Use different values for each conversion" and
// enter these amounts per action.

08Implementation Checklist

A short list before flipping the switch.

09Are You Ready for Value Based Bidding?

Answer a few questions about your account to check readiness.

10FAQs on Value Based Bidding