In-House PPC vs. Agency: What Most Businesses Get Wrong

The True Cost Comparison

Most businesses compare in-house versus agency by looking at a single number: agency monthly fee versus one salary line. That comparison is almost always wrong because it ignores everything else that goes into running paid media well.

The Real Cost of In-House PPC

Salary. A competent, dedicated PPC manager with 3 to 5 years of experience typically costs $60,000 to $90,000 per year in the US, depending on market and experience level. A senior PPC lead or someone managing paid media across multiple platforms can run $90,000 to $130,000 or more. Junior hires cost less but require training time and closer oversight, which has its own hidden cost.

Benefits and overhead. Add 20% to 30% on top of base salary for benefits, payroll taxes, and overhead. A $75,000 salary is realistically a $95,000 to $100,000 cost to the business.

Tools and software. Bid management platforms, rank tracking, call tracking, landing page tools, and reporting dashboards add $200 to $2,000+ per month depending on sophistication. Many in-house hires either go without these tools (limiting effectiveness) or businesses underestimate this line item entirely.

Opportunity cost of ramp-up time. A new PPC hire, even an experienced one, needs weeks to fully understand your account history, your business, your customers, and your competitive landscape before they’re operating at full effectiveness. During that ramp-up, campaigns often underperform relative to what they could be.

Turnover risk. If your one PPC person leaves, you lose institutional knowledge instantly and have to restart the hiring and ramp-up process, often while campaigns run on autopilot or get neglected for weeks or months.

Total realistic cost: for one dedicated in-house PPC hire, expect $80,000 to $130,000+ per year all-in, once you account for salary, overhead, and tools. That’s before you factor in whether that one person has the breadth of expertise to handle strategy, execution, creative, landing pages, and analytics all at once, which is a lot to ask of a single hire.

The Real Cost of an Agency

Management fee. Agency fees typically range from a flat monthly rate ($1,500 to $10,000+ depending on account complexity and spend) or a percentage of ad spend (commonly 10% to 20%, with percentages decreasing as spend increases). For a full breakdown of what drives these numbers, see How Much Does Google Ads Management Cost?

Ad spend itself. This is a cost either way, in-house or agency, so it’s not a differentiator in this comparison, but it’s worth remembering that ad spend is usually the largest line item regardless of who manages it.

What you get for the fee. A good agency brings a team, not one person: someone handling strategy, someone handling execution, often specialists in analytics, creative, and landing pages. You’re getting the collective experience of managing many accounts across many industries, which means faster pattern recognition on what works and what doesn’t, and tools that are already built into the agency’s cost structure rather than billed to you separately.

Total realistic cost: for a business spending $10,000 to $50,000 per month in ad spend, agency fees typically land between $1,500 and $6,000 per month, which is often less than the fully loaded cost of even a single junior in-house hire, and comes with a team rather than one person’s bandwidth and blind spots.

When In-House Actually Makes Sense

In-house isn’t wrong for every business. It tends to make sense when:

Your ad spend is large enough to justify a full internal team. Once you’re spending $100,000+ per month, the math often shifts toward building an internal team (potentially multiple specialists) because the scale justifies dedicated headcount and the internal team can develop deep, exclusive knowledge of your business that no agency splitting attention across clients can match.

Your product or service requires deep, ongoing internal knowledge that’s hard to transfer. Highly technical B2B products, regulated industries with complex compliance requirements, or businesses where the PPC manager needs to be embedded in product and sales conversations daily can benefit from having that person on staff full time.

You have the infrastructure to support a PPC hire properly. This means a manager who understands PPC well enough to oversee the work, tools already in place, and a plan for backup coverage if that person is out or leaves.

You’re already running a large enough team that you can hire a PPC lead who manages junior specialists, rather than a single generalist wearing every hat. A team of three in-house specialists often outperforms one generalist, but that only becomes affordable at higher spend levels.

When Agency Makes More Sense

Your spend level doesn’t justify a full-time hire yet. If you’re spending under $30,000 to $50,000 per month, one in-house hire is expensive relative to what an agency delivers for similar or lower cost, and you don’t get the benefit of a team.

You need expertise across multiple channels or specialties. Agencies often have in-house specialists for Search, Shopping, Display, landing page conversion optimization, and analytics that would be impossible to replicate with one internal hire.

You want to avoid the hiring, training, and turnover cycle. Agencies absorb that risk. If an agency team member leaves, the agency handles the transition without your campaigns going dark or dropping in performance for weeks.

You’re a small or mid-size business without a marketing leader who can properly manage a PPC hire. A PPC specialist with no one internally who understands PPC well enough to evaluate their work can drift for months without anyone noticing declining performance. An agency has internal accountability structures that a single unsupervised hire lacks.

Hybrid Models

Increasingly, businesses use a hybrid approach rather than treating this as strictly either/or.

Agency for strategy and execution, internal marketing lead for oversight and coordination. The business has someone internally (often a marketing director or CMO) who manages the relationship, ensures alignment with broader business goals, and holds the agency accountable, while the agency does the day-to-day account management.

White label arrangements for agencies serving their own clients. Marketing agencies that don’t specialize in PPC often partner with a specialized PPC agency behind the scenes, delivering PPC results to their own clients under their own brand. If you’re an agency owner considering this, see our guide on What Is White Label PPC Management?

Internal execution with agency for audits and strategic check-ins. Some businesses keep a junior internal hire for day-to-day management but bring in an outside agency periodically (quarterly or twice a year) for a strategic audit and course correction, catching issues before they compound.

Common Mistakes Businesses Make Evaluating This Decision

Comparing agency fee to salary without including benefits, tools, and overhead. This consistently makes agencies look more expensive than they actually are relative to the true cost of an in-house hire.

Assuming an agency automatically means less attention than an in-house hire. Attention depends on the specific agency and account, not the model itself. Some in-house hires are stretched across ten other responsibilities and give PPC minimal focus. Some agencies dedicate a full team to accounts far smaller than yours. Ask directly how much time will be spent on your account either way.

Hiring based only on resume keywords rather than proven results. Whether you’re hiring in-house or vetting an agency, ask for specific, verifiable results in your industry or a comparable one, not just a list of certifications or platforms managed.

Not defining what “good” looks like before starting. Businesses that don’t have a clear benchmark for performance (target cost per lead, ROAS, or similar) end up unable to judge whether an in-house hire or an agency is actually delivering, regardless of which model they chose. For guidance on what to expect, see What Is a Good ROAS for Google Ads?

Red Flags on Both Sides

In-house red flags: a hire who can’t explain their bidding strategy in plain language, no regular reporting cadence, campaigns that haven’t been restructured or tested in months, and defensiveness when asked to explain performance drops.

Agency red flags: vague reporting that emphasizes vanity metrics like impressions over conversions or revenue, reluctance to share account access or granular data, high account manager turnover, and generic strategies that don’t reflect your specific business or industry. For a full breakdown of how to evaluate whether your current agency is actually delivering, see How Do I Know If My PPC Agency Is Doing a Good Job?

A Framework for Deciding

Use ad spend as your primary starting filter, then adjust based on internal resources:

• Under $20,000/month ad spend: agency is almost always the better value. A full-time hire is disproportionately expensive relative to spend.
• $20,000 to $75,000/month: agency remains cost-effective for most businesses unless you have unusually complex, highly technical products that require constant internal embedding.
• $75,000 to $150,000/month: this is the gray zone. Consider a hybrid model, or an in-house hire paired with periodic agency audits.
• $150,000+/month: building an internal team starts to make financial sense, provided you have the management structure to support it properly.

Regardless of spend level, if you don’t currently have someone (internal or external) who can explain in plain terms what’s working, what isn’t, and why, that’s the real problem to solve first.

Get an Honest Read on Where You Stand

Whether you’re currently running PPC in-house, working with an agency, or trying to decide between the two, an outside audit gives you a clear, unbiased read on actual account performance. Book a PPC audit and we’ll tell you exactly what’s working, what isn’t, and what a well-run account should look like for your spend level.