How to Choose a Google Ads Agency: Everything You Need to Know Before Signing

Handing over Google Ads management to an agency can multiply your budget's impact when done right. Working with the wrong agency, on the other hand, means watching every pound and lira disappear quietly — sometimes for months before you realise it. This guide provides business owners and marketing managers with a concrete framework for evaluating agencies before signing. Not intuition-based — structural.

Why Does Agency Evaluation Need a Systematic Approach?

The technical barrier to placing a Google Ads bid is low; the experience required to manage campaigns profitably is high. This asymmetry creates a wide quality distribution in the market. Hundreds of agencies claim to 'do Google Ads', while the number that systematically manage paid search to deliver consistent results is far smaller. Those who select without asking the right questions usually end up in the second group without realising it.

How Should You Compare Management Fee Models?

Three primary pricing models exist in the market, each with a different incentive structure.

• Fixed monthly fee: The agency charges a set amount regardless of your ad spend. Predictable cost is an advantage, but the agency has no financial incentive to scale your budget — for better or worse.
• Percentage of ad spend (typically 10–20%): The agency's revenue is tied directly to your spend. This creates a natural incentive to increase your budget — independent of whether that increase is justified by performance.
• Performance-based (CPA or ROAS targets): The agency is compensated against a pre-agreed cost-per-conversion or return on ad spend. In theory, most aligned with your interests — but only if conversion definitions and attribution models are defined precisely upfront.
• Hybrid model: Fixed base + performance bonus. Balances the incentive structures of both; often preferred for larger budgets.

When evaluating fee models, ask: 'Does this model align the agency's interests with mine?' If the agency automatically earns more every time your ad spend increases, regardless of whether campaign data justifies it, examine that model carefully.

Ad Account Ownership: Why Is This So Critical?

The most commonly overlooked yet most important question in Google Ads agency selection is account ownership. Whose Google Ads Manager (MCC) account was the campaign account created under — yours or theirs?

If the account was created under the agency's MCC and you only have sub-account access, that account does not leave with you when you part ways. Years of accumulated conversion data, audience lists, quality score history, and ad assets remain with the agency. Starting fresh with a new account means returning to the learning phase.

The correct structure: your Google Ads account is created under your email address, in your name. The agency receives manager (Admin) access. When the contract ends, the agency's access is revoked — the account and all historical data stay with you. Do not work with any agency that refuses this arrangement.

Who Should Own Conversion Tracking Setup?

Without accurate conversion tracking, no optimisation is meaningful. Even if a campaign appears to be driving sales, without knowing which keyword, which ad, and which audience actually drove the conversion, budget allocation is based on guesswork.

• The agency should configure conversion actions (form submissions, phone calls, purchases, add-to-cart) via Google Ads or Google Analytics 4.
• For e-commerce, GA4 Enhanced Ecommerce or the Google Ads conversion tag should track transaction value — not just conversion count.
• Conversion tracking setup is typically done through Google Tag Manager. The agency needs GTM container access, but container ownership should remain with you.
• Ask them to verify the setup using Google Ads Tag Assistant or GA4 DebugView. If they cannot show you a test conversion firing, the setup is incomplete.

In your pre-contract conversation, ask: 'Will you be setting up conversion tracking? Do you integrate with our Google Analytics account?' Vague answers here are a warning sign.

What Should Transparent Reporting Look Like?

A competent Google Ads agency reports campaign performance in a clear and verifiable format. Metrics you should expect to see:

• Spend breakdown: Actual ad spend (money going to Google) and management fee should appear separately.
• Cost-per-click (CPC) and click-through rate (CTR): With period-over-period comparison.
• Conversion count and cost-per-acquisition (CPA): Broken down by campaign and ad group.
• ROAS (Return on Ad Spend): Primary metric for e-commerce — revenue generated per unit of ad spend.
• Search terms report: The actual queries triggering your ads — negative keyword optimisation depends on this data.
• Quality score distribution: A leading indicator of long-term account health.

An agency sending only PDF slide decks it prepares itself is not sufficient. You should have direct access to the Google Ads account and be able to verify the data yourself. Do not work with any agency that restricts your access or suggests you do not need to look at it directly.

What Do Google Partner and Premier Partner Status Actually Mean?

The Google Partners programme lists agencies that have crossed certain spend thresholds, employ certified specialists, and meet account performance standards. Premier Partner status requires a higher threshold and, in Turkey, is awarded only to agencies in the top 3% by performance.

This status alone is not a sufficient criterion — large agencies easily clear spend thresholds while account management quality can vary significantly. That said, it is not meaningless either: it confirms that account managers hold active Google certifications and that the agency has reached a meaningful operational scale. Use it as a screening criterion, not the only one.

Context-Specific Considerations for Turkey and Istanbul

The Google Ads landscape in Turkey has its own dynamics. Currency fluctuations mean TL-based budget planning can shift month to month — clarify upfront how the agency handles budget adjustments in a volatile exchange rate environment. Search volumes in Turkey also show strong seasonal patterns by sector; ask how the agency plans campaign timing around these fluctuations.

Local search behaviour matters too: Turkish users skew heavily mobile, particularly for location + service queries. The agency's approach to mobile performance optimisation and their experience with local campaigns should be part of your evaluation criteria.

6 Red Flags: Which Agencies Should You Avoid?

• Guaranteed conversion numbers or guaranteed ROAS: Google Ads is an auction-based system. No agency can guarantee a specific number of conversions or a specific ROAS figure. This promise signals either ignorance or deliberate misrepresentation.
• Refusal to create the account in your name: 'That is how our system works' is not an acceptable explanation. This creates leverage the agency can use against you.
• No direct access to your Google Ads account: If you cannot see your own campaign data, you cannot know what is happening with your money.
• Click fraud risk: Some operations offer 'services' that click competitor ads to exhaust their budgets. Monitor invalid click data in your Google Ads reports regularly.
• Withholding the search terms report: If you are not seeing this report, you do not know what queries your budget is being spent on. The most concrete indicator of transparency failure.
• Pressure for long minimum contracts + data retention clauses: Watch out for contracts that lock your data for the duration. A reasonable trial period (3 months) is acceptable; 12–24 month initial commitments and clauses that leave account data ownership with the agency are problematic.

12 Questions to Ask in Your Agency Meeting

• In whose name will the ad account be created, and who retains account ownership when the contract ends?
• Will I have direct Admin access to the account?
• Who sets up conversion tracking, and which tools will you use?
• How often will you share the search terms report?
• How do you set and report ROAS or CPA targets?
• How is the negative keyword list managed and how often is it updated?
• How are budget increase decisions made — do they require my approval?
• Who will be directly managing my account, and what is their seniority level?
• What tools do you use for campaign optimisation (Google Ads Editor, third-party tools)?
• Can you provide references from past clients in a similar sector or scale?
• Do you hold Google Partner or Premier Partner status, and what is your current certification status?
• What is the minimum contract term and what are the early exit conditions?

What Does a Structured Evaluation Process Look Like?

For a systematic evaluation: start by shortlisting 3–5 candidate agencies and send the 12 questions above in writing — the quality and speed of their responses is itself a data point. Then clearly resolve account ownership and access policy; remove any candidate that remains vague on this. Check references directly: even if not in your exact sector, speak to a client of comparable scale. Finally, agree on a pilot period (typically 3 months) with explicit success criteria (KPIs) defined in the contract — do not leave 'we'll continue if it goes well' as an undefined clause.

Free Google Ads Account Audit

Want to find out whether your current Google Ads account has budget waste, conversion tracking gaps, or account ownership ambiguity? At ADWEBX, we operate on a model that leaves account ownership with the client, shares search terms reports transparently, and sets up conversion tracking in the first week. Reach out via WhatsApp for a free account audit: https://wa.me/905322477388 — or fill in the analysis form.