Best ecommerce Google Ads agency for established brands: top 10 for 2026

What should an established brand expect from a Google Ads agency?

Most agencies can build campaigns and write ad copy, so those skills will not tell you much during a sales call.

The real differences show up in how an agency measures success, how it sets up automation, how it charges you, and who works in your account each day. The five sections below explain each one in plain terms.

Reporting that starts with profit

ROAS, or return on ad spend, shows how much revenue came back for every dollar you spent on ads. It is a useful number, but it leaves out product costs, shipping, and fees. A campaign can report a healthy ROAS and still lose money on each order.

A good agency puts profit at the top of every report. You should see contribution margin, which is the money left from each order after product cost, shipping, payment fees, and ad spend. The ROAS figures can sit underneath as supporting detail.

A blended view across all your channels

Each ad platform counts its own sales, and the same order often gets claimed by Google, Meta, and your email tool at the same time. When you add those reports together, your marketing looks more productive than it really is.

MER, or marketing efficiency ratio, solves this problem. You calculate it by dividing total store revenue by total marketing spend across every channel. Because it uses your store numbers, no single platform can take extra credit, and your agency should review the trend with you every week.

Performance Max set up with care

Performance Max, often shortened to PMax, is a Google campaign type that places your ads across Search, Google Shopping ads, YouTube, Display, Gmail, and Maps from a single campaign. Google automation’s decides where each dollar goes, based on your goals and your product feed.

The problem is that PMax will happily show ads to people who already searched for your brand name. It then counts those sales as new results, even though many of those buyers would have found you on their own.

An experienced agency adds brand exclusions in the first week and checks PMax results against your total revenue and new-customer numbers.

A fee model that matches your goals

The way an agency charges affects every recommendation it makes. When the fee is a share of your ad spend, the agency earns more each time your budget grows, even if the extra spend brings in little profit.

A flat monthly retainer removes that pull. The agency earns the same amount whether you raise or cut spend, so it can tell you to pull back when the numbers call for it. We cover each fee model in more detail in the pricing section below.

Senior people working in the account

It is common for an agency to bring senior strategists to the pitch and then hand the account to a junior manager after you sign. On an established brand, that handoff tends to show up as slower decisions and more wasted budget.

You want the person managing your account to have years of hands-on ecommerce experience. Someone who has run dozens of accounts can usually spot a broken feed, a tracking error, or an overspending campaign within days.

How do you work out break-even ROAS for your store?

Before you judge an agency's results, it helps to know the lowest ROAS your store can accept. This number is called break-even ROAS, and it marks the point where ad spend stops paying for itself.

Here is a simple example. Say you sell a product for $60, and after product cost, shipping, and payment fees, you keep $24 per order. Your break-even ROAS is $60 divided by $24, so the answer is 2.5.

That means every dollar you spend on ads needs to bring in at least $2.50 in revenue before the sale makes money. If an agency reports a 2.2 ROAS on that product and calls it a win, each of those orders is actually losing money. Your agency should know this number for your top-selling products before it sets any targets.

Why listen to us

Olifant Digital is a full-service Amazon and DTC ecommerce marketing agency, and Google Ads is one of the channels we run for established brands every day. Our specialists work inside these accounts, so the standards in this guide come from what we see go right and wrong in real campaigns.

This is our own ranking, and we place ourselves first. We built our Google Ads service around the standards described here, so we think the top spot is fair. You should still compare us with the other nine agencies and decide based on your own needs.

We are not the right fit for every brand. If you spend less than about $10,000 a month on Google, our fees would take up too much of your budget. Brand-new stores with little sales history are also better served by a freelancer until they have enough data to work with.

How we scored the agencies in this ranking

Every agency in this guide was scored on the five areas above. We added two more factors that start to matter once a brand reaches a certain size.

The first is incrementality testing. Incrementality means the sales your ads actually created, as opposed to sales that would have happened without them. Agencies that run geo-holdout tests can show you this number with real evidence instead of platform estimates.

The second is omnichannel coordination. Most established brands also sell on Amazon and advertise on Meta, and Google ads affect both channels. An agency that plans Google alongside your other channels is less likely to take credit for sales that another channel created.

Where public information was limited, we based our view on what each agency publishes about its services, focus, and pricing.

How do the top 10 agencies compare?

The table below gives you a quick view of each agency, including its main strength, fee model, reporting style, and Performance Max depth.

Read this table as a first filter. Pick the two or three agencies whose fee model and reporting style match how you already run your business, then use the questions later in this guide to narrow the list.

The 10 best ecommerce Google Ads agencies for established brands

1. Olifant Digital, best overall for profit-first DTC growth

Olifant Digital is a full-service Amazon and DTC ecommerce marketing agency for established brands that want to grow without giving up margin. We run Google Ads as a performance layer on top of Meta.

Our focus is on shoppers who are searching for products like yours but have not found your brand yet.

A senior specialist with at least 7 years of experience manages every account, and we do not staff juniors. Our work runs through Olifant AI, the in-house platform our engineering team built and keeps improving. Our data scientists also review every client account daily.

In most accounts, we put about 90% of the Google budget into Performance Max and exclude branded traffic from the start. The product feed is our first project, because titles, images, and attributes decide which searches your products can appear for. Your reports cover profit, MER, contribution margin, and new-customer CAC, or customer acquisition cost, and we run geo-holdout tests to confirm what Google added.

You get a dedicated Slack channel and a weekly call to review results and agree on next steps. Services start from $2,000 per month and are custom for each project, with no percentage-of-spend fees, and every engagement carries our 60-day guarantee: if we don't improve your performance, you don't pay.

We added $1,098,692 in monthly revenue for COCOSOLIS. We grew Coat Defense to $699,786 per month in DTC revenue, took The Magic Scent from $50K to $411K per month, and added $250,344 per month for LyfeFuel. For Wildride, we added $179K in monthly revenue and reached a 7-figure US run rate in 42 days. You can read the details in our case studies.

It suits established DTC brands on Shopify that already run Meta and want profitable growth from new customers on Google.

2. Tinuiti, best for enterprise omnichannel

• Best for: Large brands with complex, multi-channel media budgets
• HQ: New York, NY
• Focus: Full-funnel performance marketing across search, social, retail media, and streaming TV
• Rating: Not stated publicly
• Pricing: Custom, with project minimums around $10,000
• Results: Not published for named clients

Tinuiti is one of the largest independent performance marketing agencies in the US. Its teams cover Google, Meta, Amazon, Walmart, and streaming TV, and it uses its own data tool, Mobius, for planning and reporting. Large retailers choose it when they want one partner to run many channels from a single plan.

The scale that helps enterprise brands can feel less personal for a mid-sized account. Ask who will manage your Google campaigns day to day and how many other accounts that person handles.

It suits large brands that need enterprise-level reporting across search, social, and retail media.

3. Common Thread Collective, best for DTC forecasting and MER

• Best for: Growth-stage DTC brands that plan around revenue forecasts
• HQ: Santa Ana, CA
• Focus: DTC growth strategy, forecasting, and media buying
• Rating: Not stated publicly
• Pricing: Retainer, with project minimums around $5,000
• Results: Not published in detail for named clients

Common Thread Collective ties media buying to revenue forecasting and profit planning. The team talks openly about blended metrics like MER, and it also owns and runs DTC brands of its own. That gives its strategists firsthand experience spending their own money on ads.

Its planning style works well for founders who want the whole business modeled before budgets move.

Smaller brands may find the minimums high compared with what they spend on Google. It suits growth-stage DTC brands that want Google and Meta spend tied to a detailed forecast.

4. KlientBoost, best for ads paired with conversion work

• Best for: Brands that want ads and landing pages tested by one team
• HQ: Costa Mesa, CA
• Focus: PPC, landing pages, and conversion rate optimization
• Rating: 4.9 on Clutch
• Pricing: Retainer tiers, quoted on request
• Results: Shared in case studies, mostly without client names

KlientBoost is known for fast testing across ads and landing pages. It sells paid media and conversion rate optimization, or CRO, as a combined service. The same team works on your ads and on the pages those ads send people to.

Its client base mixes ecommerce with SaaS and lead generation. Because of that, its product feed and Google Shopping ads work may be less specialized than at a retail-only agency.

It suits brands that want frequent creative and landing page tests run by one team.

5. Wpromote, best for large multi-channel budgets

• Best for: Mid-market and enterprise brands consolidating several channels
• HQ: El Segundo, CA
• Focus: Paid search, paid social, SEO, and analytics
• Rating: Not stated publicly
• Pricing: Custom
• Results: Not published for named clients

Wpromote handles paid search, paid social, SEO, and analytics for mid-market and enterprise clients. Brands with large budgets across several channels use it for integrated media planning.

Its range is useful when you want to cut down the number of agencies you work with. Google Ads then becomes one service among many, so ask how the Google team works with the social and SEO teams and how often they meet. It suits brands that want one agency for a large budget spread across many digital channels.

6. ROI Revolution, best for retail and catalog depth

• Best for: Retailers with large catalogs
• HQ: Raleigh, NC
• Focus: Ecommerce paid search, Google Shopping ads, and marketplaces
• Rating: Not stated publicly
• Pricing: Custom, quoted on request
• Results: Not published in full for named clients

ROI Revolution works only with retail and ecommerce brands, and many of its clients carry large catalogs. Its main strength is product feed management for Google Shopping ads, backed by in-house technology and analytics support.

Retailers with thousands of SKUs, or individual product listings, get the most from that feed depth, because small errors across a big catalog add up quickly. The agency leans toward larger budgets. It suits high-SKU retailers that need careful feed and Google Shopping ads management.

7. Pilothouse, best for creative-led performance

• Best for: DTC brands where ad creative is the main bottleneck
• HQ: Victoria, BC, Canada
• Focus: Media buying paired with in-house creative production
• Rating: Not stated publicly
• Pricing: Retainer, quoted on request
• Results: Not published in detail for named clients

Pilothouse puts media buyers and a full creative studio on the same team. It works mainly with DTC brands and runs campaigns across Meta, Google, TikTok, and YouTube.

This setup helps brands that struggle to produce enough new ads, since fresh assets come from the same people who buy the media.

Google Search and Google Shopping ads are part of the offer, although its reputation comes mostly from creative work on social platforms. It suits DTC brands that want creative and media buying managed together.

8. SmartSites, best for web design plus PPC

• Best for: Brands rebuilding their store while running paid campaigns
• HQ: Paramus, NJ
• Focus: Web design, SEO, and PPC management
• Rating: Not stated publicly
• Pricing: Retainer, sometimes combined with a percentage of spend
• Results: Not published for named clients

SmartSites offers web design, SEO, and PPC management from one provider. Having the site and the ads with the same team can make landing page changes faster, since nobody waits on a second agency.

Its client list covers many industries beyond ecommerce. Ask to see accounts similar to yours in size and category before you sign. It suits brands that want website work and PPC handled by the same team.

9. Logical Position, best for mid-market managed spend

• Best for: Small and mid-market brands on a modest budget
• HQ: Lake Oswego, OR
• Focus: Managed PPC, Google Shopping ads, and feed management
• Rating: Not stated publicly
• Pricing: Percentage of spend or retainer, with low entry plans
• Results: Not published for named clients

Logical Position is a large managed PPC agency serving thousands of advertisers across Google and Microsoft Advertising. It is a Google Premier Partner and uses its own feed tool to manage Google Shopping ads for bigger catalogs.

The agency runs a standardized process. That keeps prices low, but you get less personal contact than a boutique agency would offer. It suits mid-market brands that want steady, dependable PPC management without a large monthly fee.

10. Coalition Technologies, best for SEO plus paid search

• Best for: Brands that want organic and paid search planned together
• HQ: Los Angeles, CA
• Focus: SEO, web development, and paid media
• Rating: Not stated publicly
• Pricing: Hourly or retainer
• Results: Not published for named clients

Coalition Technologies combines SEO, web development, and paid media, with plenty of experience on Shopify and other ecommerce platforms. Brands that want organic and paid search in one plan often put it on their shortlist.

SEO is the strongest part of its offer, so Google Ads may play a supporting role in your overall plan. It suits brands that want SEO and paid search coordinated by a single team.

How much does an ecommerce Google Ads agency cost?

Most ecommerce Google Ads agencies charge in one of three ways. You pay a percentage of your ad spend, a flat monthly retainer, or a mix of both. The model you choose shapes the advice your agency gives you.

Use this table to match the fee model to your stage. Brands that plan to increase spend over the next year will feel the difference between these models the most.

Here is what that looks like in dollars. Say you spend $80,000 a month on Google, and your agency charges 15% of spend. Its fee comes to $12,000 a month.

Now say you raise spend to $120,000. The fee climbs to $18,000, even if the extra $40,000 brings in very little profit. Under a flat retainer, the fee stays the same at both budgets, so your agency has no reason to push spend higher than your margins allow.

How can you tell if an agency is taking credit for sales you already own?

Branded search is the easiest place for an agency to make its results look better. People who type your brand name into Google were likely going to buy from you anyway, so paying for those clicks adds little. When those sales are mixed into campaign reports, performance looks stronger than it is.

In the accounts we audit, PMax usually holds the biggest share of Google spend, and most of its budget lands on Google Shopping ads. Because the system leans toward warm and branded audiences, its reported ROAS often overstates the sales it actually created.

You can check this in three steps. First, ask whether branded search terms are excluded from PMax and prospecting campaigns. Second, ask for revenue and new-customer acquisition cost (CAC) reported separately for branded and non-branded traffic.

Third, ask about geo-holdout testing. In a geo-holdout, Google ads are paused in a group of matched regions for a few weeks while they keep running everywhere else. The revenue difference between the two groups shows what Google really added.

What red flags should you watch for?

Some agencies look strong in a pitch and cost you money once the work starts. These warning signs usually show up in the first few weeks, so it pays to watch closely early on.

Be wary of an agency that accepts every auto-applied recommendation. Google suggests changes inside every Ads account, such as higher budgets or broader keywords.

Many of those suggestions raise costs before they raise sales, and an experienced team reviews each one before it goes live.

Check who owns the account, too. Your Google Ads account, Merchant Center, and historical data should sit under your own business login. If an agency runs your campaigns inside its own account and will not move them, you could lose years of data when you leave.

Long contracts with steep exit fees are another warning sign. Agencies that trust their own results usually offer a 30- or 60-day notice period. A 12-month lock-in makes it hard for you to leave if performance drops.

Finally, pay attention to how reports arrive. A dashboard link with no written notes leaves you guessing. You should get a clear summary of what changed, what it cost, and what the team plans to do next.

What questions should you ask before you hire an agency?

A sales call is your best chance to test an agency before you commit. Go in with specific questions and push for specific answers.

Start by asking who will work in your account each day and how many years of ecommerce experience that person has. Then ask whether the agency will put that staffing commitment in the contract. Getting it in writing protects you if the team changes after the first few months.

Next, ask to see a sample report from a brand similar to yours. Look for contribution margin, MER, and new-customer CAC in the standard report, along with written notes on what the team changed that week.

Before you sign, ask to speak with two current clients at your revenue stage. A short call with a brand like yours will tell you more about day-to-day service than any case study page.

It also helps to know what working rhythm to expect. A good agency reviews spend and profit every week, makes search term and placement changes every 7 to 14 days, and runs a full account audit once a quarter.

Frequently asked questions

How long until a new Google Ads agency shows results?

Most brands see early signs within the first month and clearer profit trends by around 90 days. The first few weeks usually go into auditing the account, fixing tracking, and cleaning up the product feed. Results can move up and down while campaigns relearn, so judge the agency on the quality of its work during that period.

What does an agency need from you during onboarding?

Plan to share admin access to Google Ads, Merchant Center, GA4, and your Shopify store in the first week. The agency will also need product costs or margins by SKU, since profit reporting is impossible without them. Promotion calendars and known stock issues help too.

Should conversion tracking be fixed before you hire an agency?

No, but you should know where the gaps are. A good agency will confirm that each purchase is counted once, that revenue values match your store, and that enhanced conversions are switched on. If tracking is broken, fixing it becomes the first project.

Is Microsoft Advertising worth adding for an ecommerce brand?

For many established brands, it is a sensible next step once Google is running profitably. You can import campaigns straight from Google Ads, so setup takes little time. Judge it on the same profit and MER numbers you use for Google, and scale it only if it holds up.

Should an established brand hire an agency or build in-house?

Hire an agency when you need senior people across Google, Meta, and Amazon faster than you can recruit them.

Building in-house makes more sense when one channel drives most of your business and you can attract senior talent to own it. Many established brands use a hybrid, with strategy kept in-house and an agency running execution and measurement.

How should you prepare Google Ads for Q4 and big sales events?

Start about six weeks ahead. Add sale prices to your product feed early so Merchant Center approves them in time, and raise budgets in steps instead of all at once. It also helps to pause ads on products that are close to selling out.

Final thoughts

The best ecommerce Google Ads agency for an established brand protects your profit while it brings in new customers. When you compare agencies, look closely at how each one reports profit, sets up Performance Max, handles branded search, tests incrementality, staffs your account, and charges for its work.

Olifant Digital ranks first in this guide for profit-first DTC growth. You get senior specialists only, our in-house AI platform Olifant AI, services from $2,000 per month that are custom for each project, and a 60-day guarantee: if we don't improve your performance, you don't pay.

If you want to see how this would work for your brand, get your free marketing plan from Olifant Digital. Our senior team will review your current Google Ads setup and show you where your budget can work harder, with no obligation to sign.