Ecommerce Growth Strategy: Google Ads Levers and Their Order

Revenue from Google Ads is ad spend × ROAS, so a store has two levers: spending more and earning more per unit spent. Of 484 months when a store’s ad revenue grew by more than 20% against other stores that month, 61% came with spend up by over 20%. In 55%, ROAS was up by over 20%; only 7% had neither (GetProfit data, June 2025 – June 2026). The order: check your conversion numbers, find what caps your growth, raise spend in steps, lift ROAS after the click, renew your range.

Each section gives a short answer and links to the article that covers its question in full.

Revenue from ads is spend multiplied by ROAS

Revenue from Google Ads is the value of the orders your ads brought in. It comes from two numbers. The first is ad spend: what Google charged you for clicks and impressions. The second is ROAS: how much revenue each unit of spend returned, so revenue = spend × ROAS.

Everything else you do in ads works through one of these two numbers. A better feed, a new campaign structure or a price change grows revenue from ads only if it raises spend you can afford or raises ROAS. The article on the two levers behind growth explains why this frame works better than a list of “25 ways to grow sales”.

Our data shows both levers at work, and growth without either of them is rare. We took all 484 months in which a store’s revenue from ads grew by more than 20% compared with other stores in the same month. We measure each store’s change against the median change of all stores in that calendar month, so season and holidays cancel out.

The shares add up to more than 100% because 111 months had both. The same holds in reverse. In 425 months when revenue fell by more than 20%, spend fell by 24.9% and ROAS by 19.8% (GetProfit data, June 2025 – June 2026).

Read these numbers as observations, not an experiment. A store that raises spend may be one where sales were already picking up. So the data shows what goes together with growth, not what causes it. Our ROAS also counts revenue, not profit, because we have no product costs.

In what order should you pull the levers?

Each step makes the next one easier to judge. Skip one, and you either raise spend on numbers you can’t trust or polish your conversion rate while the real cap sits somewhere else.

1. Make the conversion numbers trustworthy. You read both levers from them, and Google’s bidding learns from them.
2. Find what caps your growth. It can be the budget, your rank in the auction or your margin.
3. Raise spend in steps. Its effect shows in the same month’s revenue, and in our data more spend did not go together with a lower ROAS.
4. Lift ROAS after the click. Conversion rate and average order value move it, and most of that work happens on your site.
5. Renew the range. Keep adding new products and keep the ones that sell.

Both levers show up in the stores that doubled. Of 23 stores that doubled their revenue from ads over the year, 15 (65%) raised spend by more than 20%, and 18 (78%) raised ROAS by more than 20%. Every one of them raised at least one of the two by more than 20% (GetProfit data, 95 stores, June 2025 – June 2026). We look at what else set them apart in how stores that doubled revenue scaled.

Do you have to fix the whole account before you grow? Only step 1 is a gate. Wrong conversion numbers mislead every decision that follows, while you can fix a weak feed or an untidy structure along the way. The full readiness check is in when to start scaling Google Ads.

Step 1: can you trust your conversion numbers?

Google’s automated bidding runs on your conversion data. According to Google Ads Help (About Smart Bidding), you need conversion tracking enabled to use Smart Bidding at all. With target ROAS bidding, Google predicts future conversions and their values from the values you report, then sets bids from those predictions (About Target ROAS bidding).

So an order counted twice, or sent with a fixed placeholder amount instead of its real value, does two kinds of damage. It inflates ROAS in your reports, and it teaches the bidding to chase the wrong clicks. Every growth decision after that rests on a wrong number.

What to check before anything else:

1. Each order is counted once, with its real value.
2. The purchase is the conversion your shopping campaigns learn on, not a page view or an add-to-cart.
3. Order values in Google Ads are close to the order values in your store’s own data.

The portal works in the same order: it first checks whether the conversions can be trusted, and only then counts money. If they can’t, it lowers the account’s score and explains why. Conversion tracking for online stores shows how to set up tracking you can rely on, step by step.

Step 2: is your store capped by budget, rank or margin?

Before you add money, find out what stops your ads from showing more. Google reports this with impression share: the impressions your ads received, divided by the impressions they were eligible to receive (About impression share). Two more columns tell you why the rest were lost (Get impression share data):

For Performance Max, Google calculates impression share from Search and Shopping impressions combined, according to the same page.

In our data, the cap is almost always rank. Across 125 stores with at least 120 days of data, the median store won 45.8% of the search impressions it was eligible for. It lost 50.2% to rank and 13.6% to budget. Of the 119 stores where we could measure both losses, 110 (92%) were capped by rank and 9 by budget (GetProfit data, June 2025 – June 2026).

One limit applies to these figures. Impression share describes the auctions your products were already eligible for, and your catalogue and budget shape that pool. It is not the size of the market, and for Performance Max it is incomplete.

If your store is capped by rank, a bigger daily budget alone often buys little: the campaign can’t spend money in auctions it doesn’t win.

Google’s own list of fixes (Improve your impression share) includes a higher bid and better ad quality. For a more prominent Shopping position, it adds better product data. Under automated bidding, you set the target rather than the bid. Google’s Target ROAS help says that to get more volume you can gradually lower the target ROAS, so the strategy enters more auctions.

The third cap is your margin. If your ROAS is close to the level where an order stops paying for itself, more spend buys more orders at the edge of profit. Unit economics for online stores shows how to work out that level from your margin and average order value.

The portal’s store score shows in which part of the account the money gets stuck; on screen it is called the account score. It is a score out of 100 with a letter from A to F, computed on a fixed 90-day window. Under it sit four areas: the data Google receives, products, campaign structure and the history of changes.

Products carry 40 of the 100 points, structure 30, the data Google receives 17 and changes 13. Start with the area that drags the score down. To run a lever-by-lever check yourself, use a 15-minute diagnostic for stalled stores.

Step 3: raise spend in steps

The common fear is that more budget means a lower ROAS. In our data it didn’t. Across 1,360 store-months, the rank correlation between the change in spend and the change in ROAS was +0.026, which is practically zero (GetProfit data, June 2025 – June 2026). The full breakdown is in budget increases across 1,360 store-months.

Two things stand out. Cost per click does rise as you scale: +9.2% when spend more than doubled. And the share of store-months that kept ROAS sits between 52% and 61% in every band, whether spend went up or down.

Revenue grew even when ROAS slipped. Of 381 months in which spend rose by more than 20%, the 227 (60%) that kept their ROAS grew revenue by a median 93.1%. The 154 (40%) that lost ROAS still grew revenue by a median 19.0%.

How to raise spend matters more than how much:

1. Find out which cap you are raising. If campaigns lose impressions to budget, raise the budget. If they lose them to rank, a lower target ROAS gives the campaign room to bid.
2. Change one thing at a time, in small steps. The portal’s working rule is up to 20% on the budget per step, and up to 15% on target ROAS no more than once every one to two weeks.
3. Size the step before you take it. Google’s Performance Planner forecasts how changes to spend might affect your key metrics. It covers Search, Standard Shopping and Performance Max campaigns that meet its conditions, such as no change of bid strategy in the last 10 days.
4. Wait before you judge. After a change, a bid strategy may show a “Learning” status, and Google suggests waiting until the learning period is over before you measure performance (About bid strategy statuses).

From 17 August 2026, Google changed how target-based bidding works in budget-limited campaigns: they now deliver closer to the target you set instead of beating it. Google adds that you can raise the budget to capture more volume at that target. It also advises waiting one to two conversion cycles, the usual time from an ad click to a purchase, before you evaluate (Changes to target based bid strategies).

Why a 600% ROAS becomes 400% explains what this means for a store whose ROAS used to beat its target. For step sizes, timing and the checks between steps, see scaling Google Ads without breaking ROAS.

The reverse move doesn’t work the way owners hope. When spend was cut by more than 30%, revenue fell by 48.2% and ROAS didn’t rise; it moved by −3.7%. Cutting your Google Ads budget explains why the ROAS doesn’t come back.

Step 4: lift ROAS after the click

ROAS has a formula of its own. Revenue is clicks × conversion rate × average order value, and spend is clicks × cost per click. Divide one by the other and the clicks cancel out:

ROAS = conversion rate × average order value ÷ cost per click

Two of the three parts live after the click. Within a store, month to month, ROAS moved together with conversion rate (correlation +0.527) and average order value (+0.540), and much less with cost per click (−0.100). In the 361 months when ROAS rose, conversion rate rose by 23.3% and average order value by 19.5%. Cost per click fell by only 2.4%, and spend stayed the same (GetProfit data, 1,360 store-months, June 2025 – June 2026).

That puts most of the ROAS lever outside the ad account: in product pages, delivery terms, checkout and the size of the basket. Conversion rate optimisation for online stores sets out what to fix after the click, and in what order.

Average order value also moved with growth over the year (GetProfit data, 95 stores, June 2025 – June 2026):

Example store, not client data.

A tableware store spends 40,000 a month. It gets 8,000 clicks at a cost per click of 5 and converts 3.75% of them into 300 orders, with an average order value of 600. That gives 180,000 in revenue and a ROAS of 4.5 (0.0375 × 600 ÷ 5). Here is what each lever does on its own, and what they do together:

Each lever alone adds 20%. Together they add 44%, because they multiply: 1.2 × 1.2 = 1.44. The example keeps cost per click at 5 in every row to show the arithmetic; in real accounts it tends to rise a little as spend grows.

A very high ROAS can be a cap in its own right. Stores that went on to double their revenue started the year with a median ROAS of 396%. Stores that fell by more than 20% started at 591% (GetProfit data, 95 stores, June 2025 – June 2026). The stores that doubled also started smaller, at a median $313 a month in spend against $1,422, so part of the gap comes from a low base.

Google’s Target ROAS help names the mechanism: a target set too high may limit the traffic your ads get. More on this in why the best-ROAS stores grew least.

Step 5: renew the range, don’t just widen it

More products is not the same as more revenue. In 144 cases where a store grew its active range by more than 20%, revenue rose by 17.8% in that month. Over the next two months it moved by +0.5% and −1.6%, while stores that didn’t expand stayed flat. With spend held steady, the size of the active range had no link to revenue (GetProfit data, June 2025 – June 2026).

What does go together with growth is renewal. In our analysis of 100 stores, products that weren’t in the range during the first three months of the window brought 47.3% of revenue in stores that doubled. In stores that declined they brought 26.1% (June 2025 – June 2026).

The link held at every level of spend, so it isn’t just stores with more budget adding more products. And in stores that doubled, revenue from the old products grew too, to 126% of where it started: the new products came on top.

So keep testing new products and keep the ones that sell, rather than adding as many as you can. Assortment planning for online stores shows how to decide what to add, what to keep and what to drop.

How much can a store grow in a year?

Less than growth stories suggest. Over a year, of 95 stores in our data:

The median store grew 1.08× (GetProfit data, 95 stores, June 2025 – June 2026). Realistic yearly revenue targets shows how to turn this into a target for your own store.

Measure your own growth the usual way, with the formula from Shopify’s guide (Top 15 Growth Metrics for Ecommerce Businesses To Track): revenue growth = (this period − the previous one) ÷ the previous one × 100. Compare periods of the same length and in the same season. The season matters. Across 96 stores, with each store’s own growth trend removed, the three best months of the year brought a median 2.62× the revenue of the three worst (GetProfit data, July 2025 – June 2026).

Don’t judge on a single month either. In a typical month, a store’s ROAS sits 16% away from its own median, and its best month is 3.1× its worst (GetProfit data, 110 stores, June 2025 – June 2026). How long Google Ads takes explains when you can fairly judge the ads and any change you just made.

What changes as the store gets bigger?

We group stores by monthly revenue from ads, in dollars. This is how 114 stores split (GetProfit data, June 2025 – June 2026):

Moving up a stage is slow. In a separate sample of 95 stores, 70 started the year below $10K a month in revenue from ads, and 3 of them (4%) crossed that line within the year. We converted amounts in other currencies at fixed August 2026 rates. Ecommerce growth stages covers what to change in how you run ads at each stage, from $2K to $30K a month.

You can grow from a small start. The stores that doubled began from a median $1,512 a month in revenue from ads and $313 in spend. If your store is brand new, our month-by-month plan for Google Ads in a new store shows what to do before the numbers are big enough to read.

Which mistakes hold growth back?

Most of them move spend or ROAS the wrong way:

• Cutting the budget to raise ROAS. Revenue falls with the budget, and ROAS doesn’t come back.
• Cutting the budget in the slow season. Of 96 stores, 61 (64%) cut spend in their weakest months to below 70% of their peak-month spend (GetProfit data, July 2025 – June 2026). Demand does drop in those months, but the cut can make the dip deeper.
• Adding products for the sake of numbers. In our data, the size of the range had no link to revenue, while renewal went together with growth.
• Defending a very high ROAS. Google’s Target ROAS help warns that a target set too high may limit traffic.
• Judging after a week. Even a month says little: in a typical month, ROAS sits 16% away from the store’s own median.

Each of these, with the data behind it, is in 12 costly Google Ads mistakes. If you are still deciding whether ads pay for your store at all, start with whether Google Ads is worth it.

What this guide leaves out

Growth also comes from channels outside Google Ads: organic search, email, marketplaces, repeat customers. They matter, but they sit outside the spend × ROAS equation, and our data doesn’t cover them. We have no data on product costs, returns, repeat purchases or what visitors do on your site. So every ROAS in this guide is based on revenue, and your margin decides whether a given ROAS is profitable for you.

What to do this month

1. Check your conversion numbers. Count each order once, with its real value, and make purchases the goal your shopping campaigns learn on.
2. Find your cap. In Google Ads, add the impression share columns from Competitive metrics and compare Search lost IS (budget) with Search lost IS (rank) for each campaign.
3. Write down your break-even ROAS, the level where an order stops paying for itself. Any growth step that pushes ROAS below it costs you money.
4. Take one step on spend. Capped by budget: raise the budget by up to 20%. Capped by rank: lower target ROAS by up to 15%. Then leave it for one to two weeks.
5. Judge the step after one to two conversion cycles, against a comparable period of the season rather than against last week.
6. Pick one change after the click. Aim it at conversion rate or average order value: delivery terms, a bundle or a free-delivery threshold, for example.
7. Keep renewing the range. Add new products to test every month and keep the ones that sell.

The portal’s account score covers the start of this list on one screen. It checks whether your conversions can be trusted and shows which of the four areas drags the account down.

What state your ad account is in. One score instead of a dozen tabs of figures — plus a breakdown of exactly where the money leaks. The portal changes nothing without your consent.

Get your account score →

Sources

• About Smart Bidding — Smart Bidding requires conversion tracking. Checked 2 October 2026.
• About Target ROAS bidding — Target ROAS predicts conversions and values from reported conversion values; a target that’s too high may limit traffic; lowering the target gradually brings more volume. Checked 2 October 2026.
• About impression share — how impression share is calculated, including for Performance Max. Checked 2 October 2026.
• Get impression share data — definitions of Search lost IS (budget) and Search lost IS (rank), and where to find the columns. Checked 2 October 2026.
• Improve your impression share — budget, bid, ad quality and product data as ways to raise impression share. Checked 2 October 2026.
• About Performance Planner — what Performance Planner forecasts and which campaigns are eligible. Checked 2 October 2026.
• About bid strategy statuses — the “Learning” status after changes and the advice to wait before measuring. Checked 2 October 2026.
• Changes to target based bid strategies — the 17 August 2026 change for budget-limited campaigns, raising budgets at a target, waiting one to two conversion cycles. Checked 2 October 2026.
• Top 15 Growth Metrics for Ecommerce Businesses To Track — the revenue growth rate formula. Checked 2 October 2026.
• GetProfit data: month-to-month changes in up to 1,360 store-months, June 2025 – June 2026, each measured against the median store in the same month — revenue, spend, ROAS and its components.
• GetProfit data: 125 stores, June 2025 – June 2026 — impression share and impressions lost to rank and budget.
• GetProfit data: 95 stores, June 2025 – June 2026 — growth over the year, starting positions, average order value; 114 stores — growth stages; 96 stores, July 2025 – June 2026 — seasonality; 110 stores — ROAS volatility.
• GetProfit portal methodology — store score areas and weights, step sizes for budget and target ROAS.