Your bidding strategy influences how Google values each auction and how aggressively it bids toward your goals within your budget. In 2026,, that decision holds more significance than it used to because Google has changed how its target-based strategies behave when a campaign is budget-limited, relabeled how those strategies appear in the Search interface, and continued to move advertisers toward AI-powered, auction-time bidding. If your targets were set a year ago and left alone, they may now be working against you. This guide deliberately separates three things: what Google has changed, what Google recommends, and how Black Propeller operates. It walks through each one and explains how to give the automation enough room to work.

Key Takeaways

For Search campaigns, Google now presents Target CPA and Target ROAS as standalone labels (as of June 2026), decoupled from Maximize Conversions and Maximize Conversion Value. The change is visual: bidding behavior is identical, and you do not need to touch your account.
As of August 17, 2026, Google’s updated bidding behavior is live: budget-limited campaigns using target-based strategies now optimize more consistently toward the target entered. Campaigns that had materially overperformed their targets may therefore see actual performance move closer to those targets.
The Bid Target Adjustment Tool is live, letting you review overperforming campaigns and reset targets in line with your goals.
Enhanced CPC is gone. Google fully retired it for Search and Display in late March 2025; remaining campaigns moved to Manual CPC. Advertisers can now choose Manual CPC, conversion-focused Smart Bidding, or other automated strategies such as Maximize Clicks and Target Impression Share.
Smart Bidding sets a bid for each auction using real-time signals such as device, location, time of day, and audience. With reliable tracking and enough signal, it can respond to more auction-time variables than static manual bids can.

The 2026 Bidding Landscape

A Search campaign in Google Ads gives you a defined set of bid strategies: Target CPA, Target ROAS, Maximize Conversions, Maximize Conversion Value, Maximize Clicks, Target Impression Share, and Manual CPC. Several of these are Smart Bidding strategies, which Google defines as strategies that use its AI to optimize for conversions or conversion value in every auction; you can read Google’s own breakdown on its Smart Bidding overview.

Note the distinction: Maximize Clicks and Target Impression Share are automated, but Google does not classify them as Smart Bidding, because they optimize for clicks and visibility rather than conversions. The practical shift in 2026 is not that new strategies appeared, but that the ones you already use behave and read differently.

One term is worth defining up front, because the central 2026 change depends on it. In Google Ads, a “Limited by budget” status indicates that the current budget may be preventing a campaign from capturing all the traffic it is otherwise eligible for. The August update applies specifically to campaigns in that state that use a target-based strategy, so not every Target CPA or Target ROAS campaign is affected the same way.

What Changed in 2026

June 2026: Target CPA and Target ROAS became standalone labels for Search

Beginning in June 2026, Google started presenting Target CPA and Target ROAS as standalone labels for Search campaigns, decoupling them from the Maximize Conversions and Maximize Conversion Value wrappers in which they had been bundled. Google is explicit that this is a labeling change only: whether a strategy reads “Maximize conversions with a Target CPA” or simply “Target CPA,” it functions in exactly the same way, and you do not need to act. Google’s note on the Smart Bidding reorganization for Search confirms there is no change to bidding behavior. What it does change is legibility: a campaign labeled “Target CPA” is visibly running to a target in the campaign list.

August 17, 2026: budget-limited campaigns now optimize more consistently toward target

This is the change that matters most this year, and it is already in effect. Previously, when a campaign was budget-constrained and used a target-based strategy, it could overperform its stated target, coming in cheaper than you asked for. As of August 17, those campaigns optimize more consistently toward the target you entered, including when you adjust budgets. Campaigns that had materially overperformed may therefore see actual performance move closer to their targets.

Google’s own example is clear: if your Target CPA is $10 but your recent CPA had been $5, the campaign may now deliver closer to $10 unless you lower the target. The full details, including affected campaign types, are on Google’s changes to target-based bid strategies page.

The eligibility details matter and are easy to miss. The change applies to Search, Shopping, Performance Max, Demand Gen, and Travel; Display and Hotel campaigns already run on the new behavior. App campaigns, Video reach campaigns, and Video view campaigns are excluded and keep their previous bidding behavior. If you had a budget-limited target-based campaign that was beating its goal before the update, the practical step now is to check whether its performance has moved toward the target you entered, and to decide whether that target still reflects your business goals.

The Bid Target Adjustment Tool

To support the transition, Google released the Bid Target Adjustment Tool, which is now live in the account. It surfaces campaigns that had been overperforming and lets you either accept a target matched to recent performance or set a custom one. You can reach it via the “Review your campaign targets” notification banner or on the Campaigns page under a campaign’s Bidding settings. If your current targets already reflect your goals, no action is needed; if they do not, this is where you correct them.

Enhanced CPC is no longer an option.

Enhanced CPC, the old hybrid that let Google nudge your manual bids up or down based on conversion likelihood, is gone. Google fully retired it for Search and Display the week of March 31, 2025, and campaigns that had not been proactively moved were migrated to Manual CPC. Google’s Enhanced CPC reference states plainly that it is no longer available for these campaign types. With eCPC retired, advertisers can choose Manual CPC, conversion-focused Smart Bidding strategies, or other automated strategies such as Maximize Clicks and Target Impression Share. What is gone is the specific half-step eCPC occupied between full manual control and conversion-based automation.

How the Core Strategies Actually Work

Target CPA

Target CPA sets bids to win as many conversions as possible at roughly the average cost per conversion you specify. Google adjusts bids at auction time and averages toward your target over time, so individual conversions land above or below it. Reach for Target CPA when your conversions are worth roughly the same to you, or when you cannot pass reliable conversion values back to Google. Per Google’s Target CPA documentation, advertisers can begin with no conversion history, though Google recommends evaluating performance over a period containing at least 30 conversions.

Target ROAS

Target ROAS optimizes toward a return on ad spend you define, entered as a percentage: a 400% target means you want $4 back for every $1 spent. It depends on the conversion value data, so you need to pass revenue or lead values to Google. As Google’s Target ROAS documentation describes, the system predicts the value of each potential conversion and bids up when a search looks likely to produce a high-value one. Conversion requirements differ by campaign type.

For Search and Shopping, Google allows Target ROAS once you have at least 15 conversions in the previous 30 days; other campaign types, including Demand Gen, Video, Hotel, and Travel, have different, generally higher thresholds. Use Target ROAS when conversions differ meaningfully in value, and you can measure that value, which is why it fits ecommerce and revenue-focused accounts.

Maximize Conversions and Maximize Conversion Value

These strategies are intended to use the available budget to generate as many conversions or as much conversion value as possible without following a specific efficiency target. In practice, a campaign may not always spend the full budget, since demand, eligibility, and settings all affect it. They work well as a starting point for a newer campaign that needs to build data before you apply a Target CPA or Target ROAS constraint. The trade-off is that without a target, your actual CPA or ROAS fluctuates as you adjust budgets.

Manual CPC

Manual CPC gives you complete control over the maximum you will pay per click, and requires the most persistent attention. With Enhanced CPC retired, it is now the only fully manual option. It still has a place, typically for very low-volume accounts building toward enough conversions to support automation. For accounts with reliable conversion tracking and sufficient signal quality, though, Smart Bidding can respond to more auction-time variables than a marketer can manage using static manual bids.

Maximize Clicks and Target Impression Share

Two automated strategies sit outside the Smart Bidding conversion set. Maximize Clicks bids to drive as many clicks as possible within your budget; useful for traffic goals rather than conversion efficiency. Target Impression Share bids to keep your ad visible at the top, or absolute top, of the results a set percentage of the time, which makes it a brand-defense or visibility play. Both are automated, but neither optimizes toward conversions, so treat them as tools for specific objectives rather than defaults.

Choosing the Right Strategy

The core decision is less about a binary and more about two questions in sequence. First, are your conversions worth about the same, or do they carry meaningfully different values? If they are roughly equal, or you cannot track value, you are choosing between Maximize Conversions and Target CPA, depending on whether you need a defined efficiency target or just want the most conversions within budget. If they differ in value and you can measure it, you are choosing between Maximize Conversion Value and Target ROAS on the same basis. That second question, volume within a budget versus a defined efficiency target, is the real refinement.

On data, keep Google’s eligibility requirements and its evaluation recommendations distinct, because they are different kinds of statements. To use Target ROAS on Search and Shopping, Google generally requires at least 15 conversions in the previous 30 days. Separately, to evaluate Smart Bidding accurately, Google recommends reviewing a longer period containing at least 30 conversions, or 50 for Target ROAS. Target CPA can begin with no conversion history, though lower-volume results are naturally harder to read with confidence.

Set the target based on your unit economics, not on a round number. For Target CPA, work back from your margin and lead-to-sale rate to the cost per lead you can actually afford. For Target ROAS, invert the share of revenue you are willing to spend on ads. A target pulled from the business is defensible; a target pulled from a competitor’s blog is a guess.

Smart Bidding and Smart Bidding Exploration

What separates Smart Bidding from manual approaches is auction-time bidding: it sets a bid for each auction using real-time signals such as device, location, time of day, audience membership, and query context, rather than applying a single bid across the board. With reliable conversion tracking and sufficient signal quality, that per-auction decisioning lets the system respond to more variables than a marketer can manage using static manual bids. It is not a guaranteed win in every account. Results depend on tracking, signal quality, goals, and volume, but the capability gap is real.

Smart Bidding Exploration is a more specific, opt-in feature. Per Google’s Smart Bidding Exploration overview, it is available only for Search campaigns that use a Target ROAS bid strategy. It lets Google apply a defined ROAS tolerance you set to pursue potentially valuable queries the campaign is already eligible to match but is not currently capturing, with traffic diversity as the goal: impressions, clicks, and conversions may come from a wider range of query categories.

Crucially, this is not the same as simply lowering your ROAS target. Lowering the target relaxes bids across all your existing queries; Exploration keeps hitting your reliable queries while selectively reaching for new ones. Google’s setup guide walks through the tolerance setting. Give it budget headroom, because Exploration is designed to switch off on the backend when a campaign becomes budget-constrained.

Setting It Up Without Sabotaging the Learning Phase

The most common self-inflicted wound is treating Target CPA and Target ROAS as interchangeable and switching between them casually. They are different instructions: Target CPA asks for volume at a price, Target ROAS asks for value at a ratio. A campaign does not discard its historical conversion data when you switch, but frequent strategy changes can trigger renewed learning and short-term performance volatility, which makes results harder to evaluate consistently. Choose based on how you measure value, then stay put.

On adjusting targets, separate Google’s guidance from ours. Google advises allowing one to two conversion cycles when evaluating a target change, and notes that the bidder reacts immediately to a Target ROAS adjustment while taking time to settle at the new target. As a Black Propeller operating rule, we generally prefer incremental target changes over abrupt swings, and we base the evaluation window on the campaign’s conversion cycle rather than a fixed number of days. The point is to give the system enough data to show a real result before you react to it.

Budget is the other half of the setup, and here, too, it is worth being precise about what Google actually says. Google’s own guidance is that you should be comfortable with it spending up to twice your average daily budget on a given day, balanced out across the billing cycle; that is a comment on daily budget behavior, not a rule that your budget should equal twice your Target CPA. The defensible principle is simpler: set a budget that gives the campaign room to consistently generate conversions, with the right amount depending on your target, expected conversion volume, and conversion cycle.

When a campaign is budget-constrained, it may be unable to participate in all otherwise eligible auctions, which limits the volume Smart Bidding can capture. As a Black Propeller operating principle, when several budget-constrained campaigns share compatible goals and targeting, we generally prefer consolidating them rather than spreading limited data and budget across several throttled ones. The compatibility caveat matters: separate campaigns are the right call when markets, products, or goals genuinely differ.

None of this is the hard part, though. The strategy label is a small decision; the work that determines outcomes is around it: getting conversion tracking right, setting targets that do not throttle volume, adjusting them without needlessly restarting learning, and knowing when to graduate a campaign from Maximize Conversions to a target. In Black Propeller-managed accounts, fixing structure often improves performance before the bid strategy has been touched at all.

Bidding Across Campaign Types

Performance Max is where the bidding strategy does much of the steering, because you cannot allocate budget directly by channel. That does not mean you have no control: exclusions, brand settings, search themes, assets, feeds, conversion goals, and other inputs all shape where and how PMax spends. But with direct channel budgeting off the table, your bidding goals and conversion data become especially important levers.

For e-commerce campaigns using a Merchant Center feed, the choice is between Maximize Conversion Value and Target ROAS, and it comes down to intent: Maximize Conversion Value maximizes total value within the available budget, while Target ROAS holds to a defined efficiency target. Choose based on whether you want the system to chase value within budget or maintain a specific return. Both optimize toward value rather than raw conversion count, so the older worry that PMax will simply chase your cheapest products does not follow when a value-based strategy is in place.

On branded search, the honest framing is about measurement rather than a single cause. A high Target ROAS alone does not establish that PMax is cannibalizing your brand terms; cannibalization depends on campaign configuration, query eligibility, your Search campaign coverage, and brand controls. The practical safeguard is to review branded traffic separately when you assess PMax results, so that strong returns from existing brand demand do not mask weaker incremental performance. Start with moderate targets and let the data earn the aggressive ones. If display is part of your mix, our team’s approach to display advertising leans on the same value-signal logic rather than treating reach as the goal.

Frequently Asked Questions

Do I need 30 conversions before using Smart Bidding in 2026?

It depends on the strategy and campaign type, and on whether you mean qualification or evaluation. On eligibility: Target CPA can start with no conversion history, while Target ROAS on Search and Shopping requires at least 15 conversions in the previous 30 days. On evaluation: Google recommends reading Smart Bidding performance over a longer period containing at least 30 conversions, or 50 for Target ROAS, so results are not judged on thin data. If your tracking is solid and you are optimizing to a high-quality conversion action, you can launch within the eligibility bounds and let performance accumulate before drawing conclusions.

My campaign is limited by budget. What does the August 2026 change mean for it?

As of August 17, 2026, a budget-limited campaign on a target-based strategy optimizes more consistently toward the target you entered. If it had materially overperformed its goal, its performance may move closer to that target, so check where it now sits and use the Bid Target Adjustment Tool to either lock in a target that corresponds to recent performance or set one that reflects your goals.

Is Enhanced CPC still available in 2026?

No. Enhanced CPC was retired for Search and Display in late March 2025, and remaining campaigns were moved to Manual CPC. Your options are Manual CPC for full control, conversion-focused Smart Bidding for automation, or other automated strategies, such as Maximize Clicks and Target Impression Share, for traffic or visibility goals.

What is the difference between Target CPA and Target ROAS?

Target CPA optimizes for cost per conversion and suits lead generation, where conversions are roughly equal in value. Target ROAS optimizes for conversion value relative to spend, expressed as a percentage, and suits ecommerce and revenue-focused accounts where conversion values vary. Target CPA needs no conversion values; Target ROAS depends on them and, on Search and Shopping, requires at least 15 conversions in the previous 30 days to begin.

How does Smart Bidding Exploration help?

On Search campaigns using Target ROAS, it lets Google reach high-potential queries you are eligible for but not currently winning, by spending a set slice of ROAS tolerance to diversify traffic, without uniformly lowering your target. It needs budget headroom to run and is best treated as a scaling tool for mature campaigns that have plateaued, rather than as an always-on setting.

Getting the Setup Right

Bidding strategy is not something you can set once and forget, and the 2026 changes make that more true, not less. The August update is now live, and the accounts that come out ahead are the ones that deliberately review their budget-limited, target-based campaigns, checking whether performance has shifted toward the target they entered and whether that target still reflects the business, rather than reacting to a dip after the fact.

Black Propeller runs paid media for brands across home services, retail, legal, B2B, and more. As part of Stellar, we combine paid-media specialists with Pixis-powered technology to monitor performance signals and identify opportunities across bidding, testing, and optimization. You can see how that plays out in our results, including Valet Living, where correcting campaign structure and conversion tracking produced a 130% increase in conversion volume with no additional spend and a 200% lift in qualified leads (the full Valet Living case study has the details).

If you want your bidding setup reviewed against the 2026 changes, our Google Ads team can audit where your targets, tracking, and structure stand, and where they are quietly costing you volume. Pixis’ own Stellar network sits behind that execution.

Google Ads Bidding Strategies in 2026: An Operator’s Guide