Target ROAS is expressed as a percentage. A 400% Target ROAS tells Google Ads you want €4 in revenue for every €1 of ad spend. Google’s Smart Bidding then uses its prediction models to raise bids on searches likely to convert at high value and lower bids on the rest.
Target ROAS is different from Return on Ad Spend (ROAS) itself. ROAS is the metric that measures revenue against spend after the fact. Target ROAS is the instruction you give Google Ads to bid toward that number in advance.
The two share a formula but do different jobs: one reports, one steers. Target ROAS sits in the same Smart Bidding family as Target CPA and powers value-based bidding inside Shopping and Performance Max campaigns.
Why does Target ROAS matter for ecommerce?
Target ROAS matters because ecommerce orders have different values, and bidding to conversion count ignores that. A strategy that chases cheap conversions will happily buy €15 orders all day. Target ROAS optimizes for the revenue behind each order instead, so Google Ads spends more to win the €120 cart and less on the €15 one.
For a dropshipping store, that distinction is the difference between busy and profitable. Arthur and I run 16 Shopify stores at a 2.6x ROAS, and value-based bidding is part of how that number holds at 30,000 orders a month.
When Target ROAS works, it ties ad spend directly to the revenue you actually care about rather than a vanity conversion count. The catch is that it only works once Google Ads has accurate revenue data to predict against, which is the step new stores routinely skip.
How does Target ROAS work in Google Ads?
Target ROAS works by predicting the conversion value of each auction and bidding to keep your account’s average return at your target. Google’s models read signals like device, location, time, and query, estimate the revenue a click is likely to produce, and set the bid so the predicted return matches the percentage you set.
The underlying math is simple. The target itself is a ratio:
Target ROAS (%) = (target conversion value ÷ ad spend) × 100
Getting it running cleanly follows a clear sequence:
- Set up conversion value tracking so every purchase reports its real revenue, not a flat value.
- Reach roughly 50 conversions in the last 30 days — Google’s recommended minimum for stable predictions.
- Set the target near your recent ROAS, not your dream number. If you average 350%, start around 350%.
- Let the learning period run for about 1 to 2 weeks before judging results, per Google Ads guidance.
- Adjust in 10 to 20% increments. Large jumps choke the campaign and restart learning.
Set the target too high and Google Ads simply stops bidding on auctions it cannot win profitably, so your impressions and revenue fall. That tradeoff between efficiency and volume is the core decision behind every Target ROAS setting.
Target ROAS vs other Smart Bidding strategies
Target ROAS is one of three common Smart Bidding goals, and the right one depends on whether your conversions carry variable value. The table below compares the three an ecommerce operator actually chooses between.
| Strategy | Optimizes for | Best when |
|---|---|---|
| Target ROAS (tROAS) | Conversion value at a set return | Orders vary in value and revenue tracking is accurate |
| Target CPA (tCPA) | A fixed cost per conversion | Each conversion is worth roughly the same |
| Maximize Conversion Value | The most revenue within budget | You want scale and have no fixed return target yet |
Target CPA treats every conversion as equal, which suits lead generation more than a store with a €15-to-€200 order range. Maximize Conversion Value is often the right starting point for a newer store: it gathers value data without the constraint of a target, and you graduate to Target ROAS once the account has enough history to predict against.
Related terms
- Return on Ad Spend (ROAS)
- Cost Per Acquisition (CPA)
- Performance Max (PMax)
- Profit Margin
- Average Order Value (AOV)
- Conversion Rate
Frequently asked questions
What is a good Target ROAS?
A good Target ROAS is one your store can hit while staying profitable, which depends on your profit margin. A store with thin margins may need 400% or more, while a high-margin product can profit at 250%. Start near your recent actual ROAS and raise it gradually.
What is the difference between ROAS and Target ROAS?
ROAS is the metric that measures revenue divided by ad spend after a campaign runs. Target ROAS is the Smart Bidding setting you give Google Ads to bid toward that ratio in advance. ROAS reports performance; Target ROAS steers bidding. They share the same formula but serve opposite ends of the campaign.
How many conversions do you need for Target ROAS?
Google recommends at least 50 conversions in the past 30 days before switching to Target ROAS. With less data, the prediction models cannot estimate conversion value reliably, and the strategy bids erratically. Newer stores usually start on Maximize Conversion Value and move to Target ROAS once they have consistent conversion volume and accurate revenue tracking.
Why is Target ROAS limiting my traffic?
Target ROAS limits traffic when your target is set higher than the account can realistically achieve. Google Ads stops bidding on auctions it predicts will not meet the return, so impressions and revenue drop. Lower the target in 10 to 20% steps until volume recovers, then raise it slowly once performance stabilizes.
Can you use Target ROAS with Performance Max?
Yes, Performance Max uses value-based bidding, so you can set a Target ROAS to steer it toward a revenue goal. Performance Max spreads spend across Search, Shopping, YouTube, Display, and Gmail, and the Target ROAS tells Google Ads what return to optimize that spend toward. It still needs accurate conversion value tracking to work.
Is Target ROAS or Target CPA better for dropshipping?
Target ROAS is usually the better fit for dropshipping because order values vary, and it optimizes for revenue rather than a flat cost per order. Target CPA treats every conversion as equal, which suits lead generation more than a store selling products from €15 to €200. Choose Target ROAS once your revenue tracking is accurate.