Performance Marketing Agencies: Cost and Guide

Direct Answer: Performance Marketing Agencies at a Glance

Performance marketing agencies run paid and measurable programs, paid search, paid social, affiliate, programmatic, where every dollar is tied to a trackable outcome: clicks, leads, sales, or revenue. Unlike traditional agencies billing for creative output, performance agencies are accountable to CPA targets and conversion metrics. Typical retainers run $3,000–$15,000 per month depending on channels and ad spend managed.

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What are performance marketing agencies? Performance marketing agencies are specialized firms that run paid and measurable marketing programs, paid search, paid social, affiliate, programmatic, where every dollar spent is tied to a trackable outcome: clicks, leads, sales, or revenue. Unlike traditional agencies that bill for creative output or brand awareness, performance agencies are accountable to conversion metrics and CPA targets. You pay for results, not activity.

Most content on this topic is produced by agencies trying to rank for the term. The lists are long, the criteria are vague, and the "red flags" sections read like press releases. This article covers what the work actually involves, how pricing structures work in practice, what separates a strong agency from one that will burn your budget, and when building in-house makes more sense.

What Performance Marketing Agencies Actually Do

The category is broad enough to contain very different types of firms. The common thread is that every service is measured against a revenue or pipeline outcome, not a brand metric.

Core service areas:

• Paid Search (PPC/SEM), Google Ads and Microsoft Ads campaign management: keyword strategy, bid management, Quality Score optimization, landing page coordination, conversion tracking.
• Paid Social, Meta, LinkedIn, TikTok, YouTube. Creative testing at volume, audience segmentation, retargeting architecture, ROAS optimization.
• Programmatic Advertising, Display and video buying via DSPs (DV360, The Trade Desk). Used for retargeting, prospecting, and full-funnel reach at scale.
• Affiliate Marketing, Recruiting and managing publisher/influencer networks where partners earn a commission per sale or lead.
• Conversion Rate Optimization (CRO), Landing page testing, funnel analysis, A/B and multivariate experiments to improve the on-site conversion rate from paid traffic.
• Performance Creative, Ad creative designed to be tested and iterated on, not just produced. Scroll-stop hooks, variant production, creative fatigue management.
• Attribution and Analytics, Multi-touch attribution modeling, GA4 configuration, server-side tracking, CRM integration, dashboards that connect media spend to closed revenue.

A full-service performance marketing agency handles all of the above in a coordinated system. Many agencies specialize in two or three channels, and the honest ones say so upfront.

How Performance Marketing Differs from Brand/Traditional Agencies

This distinction matters when evaluating agencies and when setting expectations internally.

	Traditional/Brand Agency	Performance Marketing Agency
Primary goal	Awareness, brand perception, reach	Conversions, leads, revenue
Success metrics	Impressions, CPM, brand recall	CPA, ROAS, pipeline, LTV:CAC
Billing model	Retainer, project, hourly	% of ad spend, performance bonus, retainer + CPA
Campaign timeline	Months-long brand campaigns	Always-on with weekly or biweekly optimization
Creative approach	Brand consistency, storytelling	Test-and-iterate, winner-scales
Accountability	Effort and output	Revenue outcomes
Data access	May not need CRM access	Requires CRM + ad platform + analytics access

Most agencies exist somewhere on a spectrum between the two extremes. The risk is paying brand-agency rates while expecting performance-agency results, which happens more often than it should.

Performance Marketing Agency Pricing Models

There are four pricing structures in wide use. Each has a different risk profile for the client.

1. Percentage of Ad Spend

The agency charges a percentage of the media budget you spend through them, typically 10%–20%. On a $50,000/month ad budget, expect a $5,000–$10,000 management fee on top.

Best for: High-spend advertisers (>$30K/month) where budget management complexity is genuine.

Watch for: Agencies that recommend increasing spend to grow their own fee regardless of performance. When the agency's revenue and your ad spend are the same variable, misaligned incentives appear.

2. Monthly Retainer

A fixed monthly fee for a defined scope of services, a set number of campaigns managed, channels covered, hours included, and deliverables produced. Retainers typically range from $1,500/month for small-business engagements to $15,000–$25,000/month for enterprise-level multi-channel programs.

Best for: Businesses that want predictable costs and need steady ongoing optimization across multiple channels.

Watch for: Retainers with vague scope definitions, "ongoing campaign management" without specifying what's included. When results decline, agencies default to "we managed the campaigns" as proof of delivery.

3. Performance-Based (CPA / CPL)

The agency earns a fee per qualified lead, per sale, or against a target CPA. Common ranges: $50–$200 per qualified B2B lead; $500+ per customer acquired in high-ticket categories.

Best for: Businesses with well-defined lead qualification criteria and clean attribution.

Watch for: Lead quality gaming. Pure CPA models incentivize agencies to optimize toward whatever converts most cheaply, which may not be your best customers. Ensure your definition of "qualified lead" is contractually specific.

4. Hybrid Model (Retainer + Performance Bonus)

A base retainer for operations and overhead, plus a bonus tied to hitting KPI targets. Example: $5,000/month base plus a $150 bonus per qualified lead above a monthly threshold. This aligns incentives reasonably well and is becoming the dominant model among mid-market agencies.

Best for: Most B2B engagements where both operational continuity and outcome accountability matter.

Performance Marketing Agency Specializations: What Each Type Actually Does

Most agency lists treat "performance marketing" as a single category. It isn't. A paid search agency and an affiliate agency operate with fundamentally different models, metrics, and client relationships. Know what type of performance marketing you need before evaluating anyone.

Paid Search (PPC/SEM) agencies
Core work: Google Ads and Microsoft Ads campaign management. Keyword strategy, bid management, Quality Score optimization, search term analysis, negative keyword hygiene, landing page coordination, and conversion tracking. Mature category, the agencies with real depth have years of data in their client accounts and a structured testing process.
Best for: Intent-driven acquisition where buyers are actively searching for a solution. Works across B2B and B2C. CAC is usually predictable within 60–90 days.
Red flag specific to this type: agencies that manage your Google Ads but don't own conversion tracking setup. If they can't see conversions clearly, they're bidding blind.

Paid Social agencies
Core work: Meta (Facebook/Instagram), LinkedIn, TikTok, YouTube, Pinterest. Creative testing at volume, audience segmentation and lookalike building, retargeting architecture, ROAS optimization, creative fatigue management. The creative-to-media ratio is higher here than in paid search, bad creative makes a paid social agency useless regardless of their media buying skill.
Best for: B2C with visual products, DTC brands, and B2B SaaS on LinkedIn (where intent signals are weaker but audience targeting by job title and company is unmatched).
Red flag specific to this type: agencies that don't have an in-house creative team or a structured creative testing process. Paid social is now 60% creative strategy.

For a detailed comparison of paid search versus paid social (when to use Google Ads, when to use Meta, and how their economics differ), see Google Ads vs Meta Ads.

Affiliate marketing agencies
Core work: recruiting and managing a network of publishers, content sites, coupon/cashback platforms, and influencers who promote your product and earn a commission per sale or lead. Agencies handle publisher recruitment, commission structure design, compliance monitoring, and payment processing.
Best for: e-commerce, financial services, subscription businesses, and any company where cost-per-acquisition economics are clear and the product has broad appeal.
Red flag specific to this type: unvetted publisher networks that generate volume from low-quality or fraudulent traffic. Affiliate fraud is a real problem. Verify that the agency has monitoring tools and active publisher compliance management.

Programmatic advertising agencies
Core work: display and video buying through DSPs (DV360, The Trade Desk, Amazon DSP). Audience targeting using first-party data, third-party data, and intent signals. Used for retargeting, prospecting, and full-funnel reach at scale.
Best for: brands spending $50K+ per month on media who need a broad reach layer beyond search and social. Also useful for retargeting in long B2B sales cycles.
Red flag specific to this type: agencies that can't explain where your ads are running or can't provide placement reports. Brand safety and viewability fraud are endemic in programmatic. Demand transparency.

Conversion rate optimization (CRO) agencies
Core work: landing page testing, funnel analysis, A/B and multivariate experiments, heatmaps, session recording analysis, checkout optimization. CRO agencies improve the on-site conversion rate of traffic you're already driving, which multiplies the ROI of every other channel.
Best for: companies spending meaningfully on paid media with conversion rates that are below industry benchmarks. If you're getting traffic but not conversions, CRO compounds the value of everything else.
Red flag specific to this type: agencies that run tests without a clear hypothesis or test plan. Random A/B testing without a framework produces false positives and wasted cycles.

Full-funnel performance agencies
Coordinate all of the above in a unified strategy, paid search, paid social, programmatic, CRO, and sometimes affiliate, with unified attribution across channels. True full-funnel agencies are rare. Most agencies that claim this are strong in two or three channels and mediocre in the rest.
Best for: companies with $500K+ annual media budgets who need a single agency to own the entire paid acquisition strategy.
Red flag specific to this type: "full-funnel" as a marketing claim rather than a staffing reality. Ask how many people are on your account, what their specific channel expertise is, and how the channels are coordinated.

How to Evaluate Performance Marketing Agencies: A Practical Framework

Most evaluation guides are vague. Here is a framework with specific questions to ask at each stage.

Stage 1: Screen for relevant experience

Ask for case studies that match your business, similar industry, similar deal size or average order value, similar stage of marketing maturity. A 5x ROAS story in e-commerce does not transfer to B2B SaaS. A CPL reduction in healthcare doesn't predict results in financial services. The burden of proof is on them to show you they've solved your specific problem before.

Questions to ask:

• "What percentage of your current clients are in [your industry]?"
• "What is the average monthly media budget you manage across your clients?"
• "Can you show me a case study from the last 18 months with actual CPA or ROAS figures?"

Stage 2: Assess attribution methodology

Performance marketing is only as credible as its attribution. Agencies that can't explain how they connect media spend to closed revenue are optimizing toward something that may not matter to your business.

Questions to ask:

• "Walk me through how you attribute a closed deal to a specific campaign."
• "Do you use last-click, multi-touch, or a custom attribution model? Why?"
• "How do you handle offline conversions, phone calls, in-person meetings, enterprise deals that close in your CRM?"

Stage 3: Evaluate their testing process

Performance marketing is fundamentally iterative. An agency without a structured testing cadence is doing media buying, not performance marketing.

Questions to ask:

• "How often do you launch new creative or audience tests on our account?"
• "Can you show me an example of your test log from a current client?"
• "What do you do when a test produces a result you didn't expect?"

Stage 4: Understand reporting transparency

What they put in the report tells you what they're being accountable to.

Questions to ask:

• "Can you show me a sample monthly report from a client?"
• "What metrics lead the report, and why those metrics?"
• "What metrics will you not show me, and why?"

Stage 5: Verify account ownership terms

Non-negotiable: you own every ad account, pixel, analytics property, and audience list. Not the agency. If they won't agree to this in writing, walk away.

Performance Marketing Agency Red Flags: What Should End the Conversation

Some red flags are obvious. These are the subtler ones that experienced buyers miss.

Vanity metric reporting that buries revenue impact.
If the monthly report leads with impressions, reach, and click-through rates, and pipeline or revenue impact appears as an afterthought or not at all, the agency is managing their accountability exposure, not your business. This is the most common form of agency underperformance: technically active campaigns, technically correct metrics, zero connection to revenue.

No clear attribution methodology.
"We use Google Analytics and UTMs" is not an attribution methodology. It's a tool stack. A real attribution methodology describes how media spend is connected to closed revenue, how multi-touch credit is assigned, how they handle view-through conversions versus click-through conversions, and what happens to attribution when deals close offline. Any agency that can't answer this question precisely is optimizing toward metrics that are measurable but may not reflect actual business impact.

Locked-in account ownership.
If an agency insists on creating and owning the ad accounts, the pixel data, or the audience lists, walk away. This is a lock-in mechanism. When the engagement ends, your historical data, your custom audiences, and your conversion history go with them, forcing you to restart from zero. Every agency worth working with will agree in the first meeting that you own all accounts and assets.

Long minimum commitments before any results.
A six-month or twelve-month lock-in requested before you've seen a single result is a risk-transfer mechanism. Legitimate agencies will offer a three-month pilot or a paid discovery phase before asking for long commitments. The exception is genuinely long-horizon programs (some content SEO or brand programs), but even then, milestone-based reviews should be built in.

No testing cadence.
Paid media is perishable. Creative fatigues, audiences saturate, algorithms change. An agency that can't show you a documented testing process, an experiment backlog, or a regular launch cadence for new variants is running static campaigns and calling it optimization.

Undisclosed media markup.
Some agencies charge a percentage of ad spend as a management fee and also mark up the media cost before billing it to you. This means you pay $1.15 for every $1.00 of actual media. Ask directly: "Do you charge any markup on the media costs themselves, in addition to your management fee?" Get the answer in writing. If they're defensive about this question, there's your answer.

Subcontracted execution.
Some agencies win business and then white-label the work to another agency or a team of freelancers. You end up paying agency rates for freelancer execution with an extra margin layer. Ask: "Will your team do the actual campaign work, or do you use subcontractors or white-label partners for any part of the engagement?" Ask it directly. A good agency answers without hesitation.

Questions to Ask Before Hiring a Performance Marketing Agency

Use these verbatim. Take notes on the answers. Grade the specificity and honesty of each response.

1. "Show me a case study from the last 18 months in a business similar to mine, same industry, similar deal size. Walk me through the strategy, results, and what you'd do differently."
2. "Who specifically will manage my account day-to-day? What is their background, and can I meet them before signing?"
3. "What does your attribution methodology look like, how do you connect our media spend to actual closed revenue?"
4. "How often do you test new creative and audiences? Can you show me an example testing log from a current client?"
5. "What does your monthly report look like? What metrics lead the report, and why those?"
6. "Will you own our ad accounts and audience lists, or will we? I need this in the contract."
7. "What's your testing timeline? When should we expect to see early signal, and when should we see stable performance?"
8. "Do you mark up media costs in addition to the management fee?"
9. "Do you subcontract any part of the work?"
10. "What do you need from us to be successful, and what has caused engagements to underperform in the past?"

The last question separates agencies that know their failure modes from agencies that haven't had to think about them. Honest agencies will tell you it's usually a client-side issue, poor offer-market fit, no creative budget, slow approvals, before they talk about channel challenges.

In-House Performance Marketing vs. Agency: When to Switch

This is not a one-time decision, most scaled companies revisit it every 12–18 months as budget, channel maturity, and team capacity change.

Stay with an agency when:

• Annual paid media spend is below $400,000. Below this threshold, you're not generating enough channel-specific work to justify a full-time specialist hire across multiple channels. An agency delivers more coverage per dollar.
• You're testing a new channel and don't yet have a repeatable playbook. Agencies carry the learning cost and the experimentation risk.
• Your attribution infrastructure isn't mature enough to support an independent in-house operator. Without clear attribution, an in-house hire flies blind.
• You need to launch or scale fast. Hiring, onboarding, and ramping a senior paid media professional takes three to six months. A good agency can be operational in four weeks.

Bring it in-house when:

• You're spending $500,000+ per year on a single channel. At this spend level, an in-house specialist typically delivers better performance and lower total cost than an agency management fee.
• You have a stable, documented playbook that requires execution, not exploration. When the learning phase is done and the work is operational, in-house is cheaper.
• Your business model creates proprietary audience and creative insights that compound over time and are genuinely difficult to transfer to an external team.
• Agency management overhead is consuming significant internal time. Managing an agency requires a skilled internal owner, briefing, reviewing, QA-ing deliverables, managing reporting. That's a real job.

The hybrid model most scaled companies actually run:
Paid search in-house (highest business-context dependency, most sensitive to internal knowledge), paid social and programmatic through an agency (highest creative volume requirements, easiest to brief externally), and a CRO specialist either in-house or on retainer. The specific split depends on where your largest spend is and where the proprietary knowledge advantage is highest.

Top Performance Marketing Agencies: What They Specialize In

Rather than a ranked list with vague superlatives, here is a representative set of agencies across different specializations with honest positioning notes:

Directive, B2B SaaS and tech companies. Focuses on pipeline generation, not just lead volume. Integrates paid search, paid social, and content. Strong on SQL-level attribution.

Disruptive Advertising, PPC-heavy, Google and Meta focused. One of the highest-reviewed agencies in independent rankings. Good for companies needing structured paid search management with strong creative testing.

NoGood, Growth marketing for startups and scale-ups. Covers paid social, SEO, CRO, and creative in one team. Known for velocity and experimentation cadence. Works across B2B and DTC.

Acceleration Partners, Affiliate and partner marketing specialist. Manages large-scale publisher and influencer networks, primarily for brands with existing high-volume programs.

Moburst, Mobile-first performance. User acquisition for apps, ASO, and in-app conversion optimization. Strong Google UAC and Apple Search Ads capabilities.

Searchbloom, SEO and PPC combined. Focuses on local and national paid search alongside organic, with CRO as a third pillar. Well-reviewed by SMB clients.

Tinuiti, Large-scale multi-channel agency (Meta, Google, Amazon, streaming). Best suited for mid-enterprise brands with $500K+ annual media spend. Deep programmatic and retail media capabilities.

Growth Pilots, B2B SaaS paid acquisition. Small team, strategy-heavy, strong for companies transitioning from founder-led growth to scalable paid channels.

Specialization is the single most useful filter when shortlisting agencies. An agency with a strong track record in B2B SaaS acquisition will waste several months learning your category if they predominantly run DTC and ecommerce campaigns.

What to Look for When Hiring a Performance Marketing Agency

1. Relevant category case studies, not just generic results.
ROAS figures and CPL reductions mean nothing without context. A 3x ROAS on a $5K budget is different from a 3x ROAS on $500K. Ask for case studies in your industry, with comparable deal sizes, from the last 18 months.

2. Named team members, not a "team of experts."
Know who will manage your account day-to-day. Many agencies sell based on senior talent and then hand accounts to coordinators. Ask which specific person will own your campaigns and review their background directly.

3. Access to your own accounts.
You should own all ad accounts, analytics properties, and tracking setups. The agency operates them; you own them. Non-negotiable.

4. Clear attribution and reporting methodology.
Ask: "How do you connect media spend to closed revenue?" If the answer involves spreadsheets, UTMs, and guesswork, that's a red flag. Expect a described methodology: CRM integration, pipeline attribution, multi-touch modeling.

5. Realistic performance timelines.
Paid search can show early signal within 30–60 days. Meaningful performance optimization, where the agency has cycled through testing, identified winning creatives and audiences, and built an efficient structure, typically takes 90–180 days. Be skeptical of agencies promising significant results in the first month.

6. Transparency on markup and fees.
Some agencies mark up media costs without disclosure. Ask directly: "Do you charge a margin on ad spend in addition to your management fee?" Get the answer in writing.

Red Flags to Walk Away From

Guaranteed results on day one. No legitimate agency can guarantee a CPA, ROAS, or lead volume before seeing your data, your offer, and your competitive landscape. Guarantees at the proposal stage are either lies or contracts with conveniently moving definitions.

Vanity metric reporting. If the monthly report leads with impressions, reach, and click-through rates, and buries or omits pipeline and revenue impact, the agency is reporting on activity to avoid accountability for outcomes.

Locked-in account ownership. If an agency insists on owning the ad accounts, analytics, or pixel data, walk away. This is a lock-in mechanism. When you leave, your entire historical data and audience lists go with them.

No testing cadence. Performance marketing is fundamentally iterative. An agency that can't show you a structured creative testing process, a documented experiment backlog, or a regular cadence of variant launches is not doing performance work, they're doing media buying.

Undisclosed subcontracting. Some agencies win business then offshore execution or white-label to another agency. Ask directly if your campaigns will be managed by their team or a subcontractor.

Cookie-cutter onboarding. If the first month looks identical for every client, same audit template, same initial campaign structure, the agency hasn't done category-specific thinking. Performance marketing is context-dependent.

Long minimum commitments on day one. A six-month or annual lock-in requested before you've seen a single result is a risk-transfer mechanism, not a partnership signal. Three months is a reasonable minimum for a first engagement.

When to Hire an Agency vs. Build In-House

This is not a permanent binary decision, most scaled companies run hybrid models. But the initial framing matters.

Hire an agency when:

• You're spending less than $200K/year on paid media. Below this threshold, an in-house hire will be spending the majority of their time on tasks that don't require full-time capacity, and an agency delivers more channel coverage per dollar.
• You're entering a new channel or market where you don't have established playbooks.
• You need to test whether paid acquisition can work for your business before committing to headcount.
• Your attribution infrastructure isn't mature enough to support an in-house team operating independently.
• Speed matters. A good agency can operationalize faster than recruiting, onboarding, and ramping a new hire.

Build in-house when:

• You're spending $500K+ per year on a single channel. At this point, an in-house specialist typically delivers better performance at lower total cost than agency management fees.
• Your business requires deep proprietary knowledge that compounds over time, specific audience insights, creative formats, or offer structures that are genuinely difficult to document and transfer to an agency.
• You've identified a repeatable playbook and need execution, not strategy.
• Agency management overhead is consuming significant internal bandwidth. Managing an agency is itself a job.

The hybrid reality at scale. Most growth-stage companies use an agency for strategy and new channel testing, while in-house handles the channels where volume and efficiency have been established. Some keep in-house for paid search (highest business-context dependency) and use agencies for paid social and programmatic (higher creative and audience testing volume requirements).

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Related Reading

• How to Choose a B2B Marketing Agency (2026)
• Digital Marketing Consultant: Role and Pricing
• Performance Marketing: Channels and Metrics
• PPC Consultant: Role, Pricing, When to Hire
• Google Ads Consultant: Cost and When to Hire

According to HubSpot, 61% of marketers say generating traffic and leads is their top challenge.

Gartner research shows that the average marketing budget represents 9.5% of total company revenue.

A McKinsey study found that data-driven organizations are 23x more likely to acquire customers.

FAQ

What's the difference between a performance marketing agency and a digital marketing agency?

The overlap is significant, many digital agencies offer performance services. The distinction is accountability: a performance marketing agency structures its engagement around measurable revenue outcomes and adjusts its tactics against conversion and CPA metrics. A general digital agency may include performance services but frames success around broader digital presence. In practice, ask what KPIs they hold themselves accountable to and what happens contractually if those KPIs aren't met.

How much does a performance marketing agency cost per month?

The range is wide. Small-business engagements run $1,500–$5,000/month on retainer. Mid-market programs with multi-channel management run $5,000–$20,000/month. Enterprise-level programs managing $500K+ in annual ad spend can run $20,000–$50,000/month or more, often on a percentage-of-spend model. The media budget is additional and separate from agency fees.

How long before a performance marketing agency delivers results?

Early signal (whether campaigns can drive traffic and leads at target costs) typically appears within 30–60 days. Optimization to a stable, efficient structure takes 90–180 days. Agencies that promise transformational results in 30 days are setting you up for disappointment or redefining results to meet the expectation.

What should I ask for in a performance marketing agency RFP?

Request: three case studies in your industry from the last 18 months with actual CPA and ROAS figures; the name and background of your day-to-day account manager; a description of their attribution methodology; account ownership terms in writing; a 90-day plan specific to your business; and their testing cadence for creative and audiences.

Do performance marketing agencies work on commission or retainer?

Most work on a retainer, a percentage of ad spend, or a hybrid. Pure commission (CPA-only) arrangements are less common because they require agencies to front capital and carry risk. Hybrid models, base retainer plus performance bonus, are the most aligned structure for both parties.

What's the biggest mistake companies make when hiring a performance marketing agency?

Choosing on price alone, then not defining what "performance" means before signing. If the contract doesn't specify what counts as a qualified lead, what the target CPA is, and what happens if those benchmarks aren't hit, the agency can claim success while your pipeline stays empty. Define the outcomes before you agree on the price.

When does it make sense to hire in-house instead of an agency?

When you're spending more than $400K–$500K annually on a single channel and have a repeatable playbook, an in-house senior specialist will typically outperform an agency on both cost and performance. The agency model adds value at earlier stages (channel testing, playbook development, speed to launch) and at broad multi-channel scale where a single in-house hire can't cover the surface area.

What questions should I ask a performance marketing agency before signing?

The most revealing questions: How do you attribute closed revenue to specific campaigns? Who specifically manages my account day-to-day? Do you own or do I own the ad accounts? Do you mark up media costs beyond your management fee? Can you show me an actual testing log from a current client? The answers to these reveal attribution maturity, account management quality, and whether the agency's incentives are aligned with yours.

What are performance marketing agency specializations I should know about?

The main categories are paid search (Google/Microsoft Ads), paid social (Meta, LinkedIn, TikTok), affiliate marketing, programmatic display and video, conversion rate optimization, and full-funnel agencies that coordinate all of the above. Each operates with different metrics, timelines, and expertise requirements. Most agencies are strong in two or three of these; few are genuinely excellent across all. Match the specialization to the channel you need most before evaluating.

What is the difference between a performance-based agency and a retainer-based agency?

A performance-based agency earns its fee (or a bonus) based on hitting specific KPIs, cost per lead, cost per acquisition, revenue generated. A retainer-based agency charges a fixed monthly fee for defined services regardless of outcomes. Most agencies use a hybrid: a base retainer covering operations, plus a bonus tied to KPI achievement. Pure performance-based arrangements are less common because they require agencies to front costs and absorb market risk they can't fully control.

Last verified: March 2026

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Originally published on konabayev.com.