Optmyzr Blog

All About Value Rules: Bid Adjustments for Smart Bidding in Google Ads

Frederick Vallaeys

Co-Founder & CEO



Not all clicks are created equal — some are more likely to convert than others. In the days of manual CPC bidding this meant that PPC specialists had to adjust bids to account for these differences in expected conversion rates. They might have set geo bid adjustments to bid more in Germany and less in Switzerland or to bid higher on mobile devices than on desktops.

But then Smart Bidding (Google’s name for its most advanced version of automated bidding) came along and many bid adjustments stopped working the way advertisers expected. We covered how different bid adjustments interact with different bid strategies in a previous post.

Let’s see how Value Rules, the shiny new toy from Google Ads, works to restore bid adjustments for automated bids and, most importantly, how to use this new tool correctly for optimal results.

Value Rules let you set bid adjustments for Smart Bidding

Value Rules were announced at Google Marketing Live 2019 and finally came out of beta in late summer of 2021. Value Rules let advertisers create rules to adjust conversion values whereas bid adjustments simply adjust CPCs. So how then are Value Rules a replacement for bid adjustments you might ask.

Remember that smart bidding automatically sets the appropriate CPC bid every time a search is done for your ad. This real-time bid is based on the expected value the click may produce and the advertiser’s target return on ad spend (tROAS).

In a simple example, if Google expects the click has a 10% chance of leading to a $100 sale, then that click is worth $10 (0.10 * $100 = $10). Combine that with a tROAS of 200% (i.e. make $2 for every $1 spent on ads), then the CPC bid will be $5 (i.e. this $5 click is expected to create $10 of value).

For this auction:

  • Click’s value is estimated at $10
  • tROAS is 200%
  • Automatically set a bid of $5
  • If user clicks, advertiser pays up to $5 and is expected to get $10 of value, hence ROAS is 200%

With Value Rules, you could tell Google that the conversion value would be double. By doubling the conversion value in the example above, you will end up setting double the CPC.

For the same auction, now with a Value Rule:

  • Value Rules says conversion value is double
  • Click’s value is estimated at $20 instead of $10
  • tROAS is 200%
  • Automatically set a bid of $10 instead of $5
  • If user clicks, advertiser pays up to $10 and is expected to get $20 of value, hence ROAS is 200%

As you can see, a Value Rule that doubles the value reported for a conversion is effectively the same as creating a bid adjustment of 2x.

Don’t use Value Rules the same way as bid adjustments

Now here’s the important thing. While you could use Value Rules as a straight-up replacement for bid adjustments, you should NOT because you’d be doubling up on what Google’s automated bidding is already doing for you.

Remember bid adjustments are way to manipulate bids when you’re doing the bidding process manually so let’s review that manual process for a minute. First, how are CPC bids typically derived? Say you expect 10% of clicks to fill out your lead gen form, and each form fill is worth $100 to your business, then your CPC bid would be $10 (0.10 * $100).

Next, how are bid adjustments decided? You’d look at your conversion numbers in Google Ads and notice that customers in Germany convert at a 20% higher rate, 12% instead of 10% of the time. So you set a +20% bid adjustment for clicks from Germany. Hence your $10 bid becomes a $12 bid when the user is in Germany (0.10 * 120% * $100 = $12).

Now here’s the rub… With smart bidding, Google already knows this difference in expected conversion rate so it will already set a $12 bid. This is true because the data you used to decide a 20% bid adjustment is the exact same data Google already gets from you when you use conversion tracking.

The bottom line is that creating a Value Rule to adjust bids based on expected conversion rates will simply stack bid adjustments and get you to bid incorrectly. So please don’t.

Remember, Google removed Broad Match Modified keywords because 95% of advertisers were using it wrong and getting results that weren’t intended. Let’s not go down that same path.

How to use Value Rules to optimize PPC campaigns

Value Rules are tremendously useful as a form of bid adjustments for smart bidding if you use the right data to create your rules.

A good rule will be based on something you haven’t told Google.

It turns out that there’s a lot advertisers know about their business that they’re not communicating to Google through the conversion tracking pixel, seasonality adjustments or different targets.

Let’s go back to our example with German customers. While we already told Google they convert 20% better than typical, what happens after the conversion? Do they typically have a higher lifetime value? Or do these conversions result in more store visits because you have more stores per capita in Germany than in other places?

We started with ‘not all clicks are created equal’, now we have ‘not all conversions are created equal’. Value Rules give us a way to communicate these differences in conversion quality.

How to use Value Rules

Value Rules are set at the account level. The rules can be based on location (physical or location of interest), device, or audience.

For audience, advertisers can choose between who the user is, what they’re interested in, what they’re actively searching or planning, and how they’ve interacted with your business.

Rules can be based on just one of the three types of segments, or combinations of up to two segments. Once advertisers pick the types for their first rule, all other rules must use the same two segment types. For example, if the first rule combines location and audience type, then all following rules must also use location and audience and it won’t be possible to create rules using device types.

There is a nice preview of rules, and the ‘If x, Then y’ methodology should already be very familiar to Optmyzr users of our very powerful PPC Rule Engine.

The action of a rule is to manipulate the reported conversion value by incrementing it by a set amount or multiplying it by a certain factor.

For example, if a user is located in the US and works in the tech industry, then add 5 to the value that was reported by the conversion pixel. Or, if a user is located in the Netherlands and regardless of audience, then multiply the reported value by 0.8.

The resulting rules will look something like this in Google.

Alternatives to Value Rules

As I’ve explained before, Value Rules are a less precise way to communicate conversion quality to Google than alternatives such as offline conversion tracking or value adjustments. But they are much simpler to use than the alternatives so they’re a great next step for advertisers who previously haven’t optimized their accounts by optimizing how they report conversions.

Value Rules in Optmyzr

Optmyzr will have an innovative new approach to creating Value Rules very soon, so drop our support team a line if you’d like to be one of the first to test it out.

Google Value Rules FAQ: How It Really Works

Updated August 26, 2021

Google’s Value Rules are a great feature for advertisers who want more control over automated bidding but who don’t want to set up the more complex offline conversions or value adjustment systems.

We got several questions related to this feature so here’s a roundup of the most popular ones. We’ll continue to amend this post as new information about Value Rules becomes available.

Do reports show different conversion values when using value rules?

Yes, the ‘conversion value’ column will show adjusted values throughout your entire account for search, shopping, and display campaigns.

This means that if you send reports to your boss or client with conversion values, these values will be ‘incorrect’ after enabling value rules. How you define ‘correct’ is up to you but there will be a change in how values are calculated and this could create issues with reporting.

We recommend having a conversation with your stakeholders before enabling value rules. Alternatively, you can use automated reporting tools like those offered by Optmyzr, to use value rules to improve bidding (using adjusted conversion values).

Are conversion values retroactively updated?

Values start being adjusted from the moment you create your value rules. Previously reported values will not be changed.

How can I see my original conversion values?

To see the unadjusted conversion values, in other words, the conversion value as if you had no value rules, enable the segment “Conversions → Value Rule Adjustment” on the account or campaign overview page.

After doing this, you’ll see a new segment for “original value (no rule applied) for any account or campaign that has a non-zero conversion value.

If a conversion satisfies multiple value rules, which one is used?

Amy Bishop explained this really well in her post about value rules. This is the order in which rules are applied:

  1. For locations, the rule for the most granular location is used i.e. the rule for San Francisco takes precedence over the rule for California.
  2. For audiences, Google will try rules in the following order:
    1. Customer Match
    2. Remarketing & Similar Audiences
    3. Affinity & In-Market Audiences
    4. Detailed Demographics
  3. If there is a tie in an audience segment, Google will choose a rule using the “multiply” logic over the “add” rule.
  4. If any other tie remains, they will choose the rule with the highest adjustment.

Is there really a 1:1 relationship between a bid adjustment and a value rule?

This is a great question from Mike Ryan who really knows the details of PPC. And he’s right that setting a value rule is not necessarily the exact equivalent of setting a bid adjustment.

Here’s why: Value rules change the value of a conversion that is reported to Google. Google’s machine learning algorithms then use these self-reported conversion values to predict the probable value of future conversions.

But remember Google considers over 500,000 signals from each auction to make this prediction.

And while the advertiser may have adjusted the value they reported because they really like conversions from California, the ML system may instead find other factors (like time of day) that correlate with these high conversion values. Rather than bid higher because the user is in California, it bids higher because the user is searching at night.

Can value rules be set for tCPA campaigns?

Value rules are set at the account level and change the values for all reported conversion values for search, shopping and display campaigns. The rules will change the values regardless of the bid management style of the campaign.

If a campaign is using tROAS, maximize conversion value or is a smart shopping campaign, then the adjusted conversion values will impact how Google determines bids. They will continue to consider only those conversion actions included in conversions (this is a setting for each conversion action).

What is the range of allowed adjustments?

A rule can change the original value of a conversion by a factor ranging from 0.5x to 10x. Alternatively, advertisers can choose to add a static value to a conversion that meets the conditions of the rule.

Blog featured image courtesy of this Google article on Value Rules