The in-house versus outsourced question is almost always argued on cost per hour, and cost per hour is the dimension where the answer matters least. Both arrangements can be made to produce roughly the same number. What differs is coverage, what happens when the person leaves, what you can see into, and whether your volume makes any of the expertise usable in the first place.

Three bodies of published data settle more of this than the usual spreadsheet does: the industry’s own compensation research, the platforms’ published volume thresholds, and the programmatic supply chain studies. None of them is about salaries.

The fee question has already moved

The historic argument for going in-house was that agency compensation scaled with spend rather than with work. That is now the minority arrangement.

What the survey found. The ANA’s compensation survey, 18th edition, fielded in the second quarter of 2022 across 101 marketers and 336 agency relationships, reported 82 percent of relationships as fee-based, up from 68 percent in 2016.

And incentives have receded too. Performance incentives were present in 41 percent of relationships, down from 48 percent in the prior edition and from 61 percent earlier.

What that changes about the comparison. If the external cost is a stated fee, the honest comparison is fee against fully loaded internal cost, not fee against salary. The spend-scaling objection has largely been answered by the market.

What it does not change. A fee tells you what you pay the agency. It does not tell you what the agency receives from anyone else, which is a separate question and the reason the disclosure question stays on the list either way.

And one caution about reading the survey. It samples large US advertisers. The direction of travel is informative for a small B2B buyer; the percentages are not a benchmark for one.

Shift in agency compensation structures between 2016 and 2022Shift in how advertiser to agency relationships are compensated, as reported by the trade association compensation survey, eighteenth edition, fielded in the second quarter of 2022 across one hundred and one marketers and three hundred and thirty six agency relationships. Fee based compensation accounted for eighty two percent of relationships in the 2022 edition, up from sixty eight percent in the 2016 edition, an increase of fourteen percentage points. Performance incentives were present in forty one percent of relationships in 2022, down from forty eight percent in the prior edition and from sixty one percent in earlier editions. The consequence for a client weighing internal against external media buying is that the historic argument for bringing buying in house, namely that agency compensation scaled with media spend rather than with work performed, now describes a minority arrangement, so the honest comparison is between a stated external fee and a fully loaded internal cost rather than between a fee and a salary. What this does not change is that a fee states what the client pays the agency and says nothing about what the agency receives from any other party, which remains a separate disclosure question. A caution on reading the survey is that it samples large United States advertisers, so the direction of travel is informative for a small business to business buyer while the percentages themselves are not a benchmark for one.Agency compensation, 2016 compared with 2022Fee-based relationships201668%202282%Relationships carrying performance incentivesearlier61%prior ed.48%202241%Base: 101 marketers, 336 agency relationships, fielded Q2 2022. Large US advertisers, so read the direction,not the percentages, as applicable to a small B2B buyer.
The spend-scaling objection to outsourcing has largely been answered by a shift to fees, per the industry's own survey. Source : ANA Trends in Agency Compensation, 18th edition, fielded Q2 2022 (2022)

Your volume decides more than your staffing model

Before comparing arrangements, check whether either arrangement can produce the thing you are buying.

The social platform’s threshold. Roughly 50 optimization events per ad set within seven days of the last significant edit. Below that, the ad set stays in the learning phase and is flagged as learning limited.

The search platform’s published eligibility figures. Target return on ad spend requires at least 15 conversions in 30 days on search and shopping. Target cost per acquisition can begin with no conversion history, but Google recommends evaluating over 30 days including at least 30 conversions.

Divide before you decide. Monthly conversions divided by the number of ad sets or campaigns, compared against those figures. If the result is far below them, algorithmic optimization is not available to you at any staffing cost.

Which reframes the whole comparison. For a low-volume B2B account the value is in offer, targeting and creative judgement, not in daily account management. That judgement is bought in days per month, not in a full-time hire.

And it points the other way at scale. Once volume comfortably clears the thresholds and the work is continuous rather than campaign-shaped, the case for an internal function strengthens quickly, because the knowledge compounds where the data lives.

The cost lines the comparison usually omits

A salary is not a media function. Four other lines exist in both models and only one of them shrinks when you hire.

Tooling. Reporting, creative production, competitive research, call tracking, testing. These are subscriptions and they are the same subscriptions whoever operates them.

Creative production. The single biggest driver of paid performance is what the ad says and shows. An internal buyer without production capacity buys media for creative that somebody else has to make.

Coverage. An external supplier covers the calendar as a team. One internal hire covers it alone, minus statutory leave, public holidays, sickness and training. That gap is real and it lands in weeks where campaigns are running.

Measurement. Someone has to maintain the tracking, reconcile platform numbers with the CRM, and keep the reporting definitions stable. It is a distinct skill from buying and it is frequently assumed into the same job description.

What survives the hire. Only one of these four lines is genuinely replaced by a salary. The comparison that ignores the other three concludes in favour of in-house by construction.

Cost lines that persist whether media buying is internal or externalThe five cost lines involved in operating a paid media function, and which of them are genuinely replaced by hiring an internal media buyer. The first line is account operation, meaning the day to day buying, bidding and structural work, and this is the only line genuinely replaced by an internal salary. The second line is tooling, covering reporting, creative production software, competitive research, call tracking and testing, which are subscriptions that cost the same regardless of who operates them and therefore persist unchanged in both arrangements. The third line is creative production, which matters because what an advertisement says and shows is the largest driver of paid performance, and an internal buyer without production capacity buys media for creative that somebody else must still produce, so the line persists. The fourth line is calendar coverage, where an external supplier covers the year as a team while a single internal hire covers it alone minus statutory leave, public holidays, sickness absence and training, producing a gap that falls in weeks when campaigns are running and that must be filled by somebody. The fifth line is measurement, covering maintenance of tracking, reconciliation of platform reported figures against the customer relationship management system, and stability of reporting definitions, which is a distinct skill from media buying and is frequently assumed into the same job description without being resourced. The conclusion is that a comparison built on salary against agency fee, which omits the four persisting lines, concludes in favour of the internal option by construction rather than by evidence.What a salary actually replacesCost lineExists in both models?Replaced by a hire?Account operationYesYesTooling and subscriptionsYes, identicalNoCreative productionYes, and it drives performanceNoCalendar coverageTeam versus one personNo, it worsensMeasurement upkeepYes, a separate skillNoA comparison of salary against fee omits four of five lines, and therefore reaches its conclusion by construction.
Only one of five lines is actually replaced by an internal salary. The others exist in both arrangements. Source : Method (2026)

Transparency does not come with the employment contract

The strongest argument for in-house is usually visibility. It is a real gain, and it is narrower than it sounds.

What the supply chain study found. The ISBA and PwC programmatic study published in 2020 matched 31 million of 267 million impressions, about 12 percent, across the participating advertisers and their supply chains, and found roughly 15 percent of spend that could not be attributed to any identified party.

What that means for the decision. The unattributable portion sits between the buying platform and the publisher. Employing the buyer internally does not open that box, because the box belongs to the supply chain rather than to the buyer.

Where in-house genuinely wins on visibility. Inside the account. Every setting, every change, every historical comparison is yours, permanently, without an access request. That is worth having and it is the honest version of the claim.

And what the audit literature adds. ISBA’s audit guidance recommends annual audits in large markets, biennial in smaller ones, plus an exit audit at the end of a relationship, while noting that “access to vendor deal terms will be severely restricted due to confidentiality”. Even a formal audit does not reach everything.

The practical conclusion. If visibility is the reason, buy the visibility directly: account ownership, a dated change log, reporting that carries its definitions, and an exit audit clause. Those can be contracted for without changing who employs the buyer.

What the 2020 programmatic supply chain study could and could not traceFindings of the programmatic supply chain transparency study published in 2020 by an advertiser trade body together with an accountancy firm, and what they imply for the decision between internal and external media buying. Of two hundred and sixty seven million impressions examined across the participating advertisers and their supply chains, thirty one million could be matched end to end from advertiser to publisher, which is approximately twelve percent, leaving approximately eighty eight percent that could not be traced through the chain. Separately, approximately fifteen percent of the media spend examined could not be attributed to any identified party in the chain, an amount sitting between the buying platform and the publisher. The implication for the staffing decision is that employing the media buyer internally does not open that portion of the chain to inspection, because the opacity is a property of the supply chain rather than of the buyer’s employment arrangement. Where internal buying genuinely improves visibility is inside the advertising account itself, where every setting, every change and every historical comparison belongs permanently to the client without requiring an access request from a third party, which is the accurate and narrower version of the transparency claim. The trade body’s own audit guidance recommends annual audits in large markets, biennial audits in smaller ones and an exit audit at the conclusion of a relationship, while stating that access to vendor deal terms will be severely restricted due to confidentiality, so even a formal audit does not reach every part of the chain. The practical conclusion is that where visibility is the motivation it should be purchased directly through account ownership, a dated change log, reporting carrying its own definitions and an exit audit clause, all of which can be contracted for without changing who employs the buyer.What could be traced end to endImpressions matched from advertiser to publisher12%31 million of 267 million impressionsSpend that could not be attributed to any identified party15%sitting between buying platform and publisherWhat hiring internally does not changeThat opacity belongs to the supply chain, not to the buyer. The employment contract does not reach it.What it does change, and what you can buy insteadVisibility inside the account. Also obtainable by contract: ownership, change log, definitions, exit audit.
Only about 12 percent of impressions could be matched end to end, and roughly 15 percent of spend was unattributable. Source : ISBA and PwC, Programmatic Supply Chain Transparency Study, 2020 (2020)

The split most B2B companies end up with

Framing the question as all or nothing hides the arrangement that works for most accounts below enterprise scale.

Keep ownership and measurement inside. The accounts, the tags, the datasets, the CRM reconciliation and the definitions used in reporting. These are the assets, and the platform rules make their location consequential.

Buy operation and creative outside. Bidding, structure, testing cadence and production. These benefit from seeing many accounts, and a single internal buyer sees one. That is the side of the split we are hired for, and our page on B2B paid acquisition sets out how bidding, creative and testing are run while the accounts and the datasets stay in your own portfolio.

Name an internal owner, not an internal buyer. One person, part-time, who owns the numbers, holds the definitions, reads the change log and asks the questions. That role is the difference between an agency being managed and an agency being trusted.

Why this is not a compromise. It puts each capability where it compounds. Knowledge of your buyers and your sales cycle stays where it is used every day. Knowledge of platform mechanics stays where it is refreshed across accounts.

And what it costs to get wrong in the other direction. The common failure is the reverse split: operation brought inside for cost reasons while measurement, ownership and definitions stay with a supplier. That produces an internal buyer who cannot verify their own results.

One test that tells you which side you are on. Ask who would notice first if conversion tracking broke tomorrow. If the answer is the agency, measurement is not inside yet, whatever the org chart says.

Which media capabilities to keep internal and which to buy externallyDivision of paid media capabilities between those a business below enterprise scale should keep internally and those it should buy externally, together with the reasoning for each side. The capabilities to keep internally are ownership of the advertising accounts, tags, datasets and audiences, reconciliation of platform reported figures against the customer relationship management system, and control of the definitions used in reporting including attribution window, model and conversion counting setting. These are kept internally because they are the assets rather than the labour, and because the platforms’ ownership rules make their location consequential and in one case irreversible. The capabilities to buy externally are bidding and structural operation, testing cadence and creative production, which are bought externally because they improve with exposure to many accounts while a single internal buyer sees only one. The staffing implication is to name an internal owner rather than an internal buyer, meaning one part time person who owns the numbers, holds the definitions, reads the change log and asks the questions, since that role is the difference between an agency being managed and an agency being trusted. The common failure is the reverse split, in which operation is brought inside for cost reasons while measurement, account ownership and reporting definitions remain with the supplier, producing an internal buyer who cannot verify their own results. A single diagnostic test identifies which side of the split a business is currently on, namely asking who would notice first if conversion tracking broke tomorrow, since an answer naming the agency means measurement is not internal regardless of what the organisation chart states.Keep the assets, buy the operationKeep insideAd accounts, tags, datasets, audiencesCRM reconciliationReporting definitions: window, model,counting settingOne part-time owner of the numbersThese are the assets. Platform rules make their location final.Buy outsideBidding and account operationStructure and testing cadenceCreative productionPlatform mechanics and benchmarksThese improve with many accounts. One buyer sees one.The reverse split, which is the common failureOperation brought inside for cost, while ownership and definitions stay outside. The buyer cannot verify their own results.Test: who notices first if conversion tracking breaks tomorrow? If it is the agency, measurement is not inside.
The split is not a compromise. It puts each capability where it compounds, and keeps the assets where the platform rules make them recoverable. Source : Method, over Meta and Google published ownership rules (2026)

The four questions that actually decide it

Answer these before running any cost comparison, because they determine whether the comparison is meaningful at all.

Is the work continuous or campaign-shaped? Continuous work with daily decisions rewards proximity and favours internal. Work that arrives in bursts leaves an internal hire idle between them.

Does your volume clear the platform thresholds? If not, you are buying judgement, not operation, and judgement is bought in days per month.

Does the knowledge compound in your business or in your category? Knowledge of your buyers, your offer and your sales cycle compounds internally. Knowledge of platform mechanics compounds faster across many accounts than inside one.

What happens the week the person leaves? Ask it in both directions. An agency loses a practitioner and reassigns. A one-person internal function loses the function.

And a fifth, which is really a decision rule. If you cannot answer the first four with your own data, the answer is not in-house yet. Build the measurement first, because an internal hire inherits whatever measurement you already have and rarely gets time to fix it.

Four decision questions and the direction each answer points for internal or external media buyingFour questions that determine whether media buying should be operated internally or externally, and the direction each possible answer points. The first question is whether the work is continuous or campaign shaped, where continuous work involving daily decisions rewards proximity and points towards an internal function, while work arriving in bursts leaves a full time internal hire idle between them and points towards an external supplier. The second question is whether the account’s conversion volume clears the platforms’ published optimization thresholds, where clearing them comfortably points towards internal operation because there is daily optimisation work to do, and falling below them points towards buying judgement in days per month rather than buying operation as a full time role. The third question is whether the knowledge being built compounds inside the client’s business or across the category, where knowledge of the client’s buyers, offer and sales cycle compounds internally and points towards a hire, while knowledge of platform mechanics compounds faster across many accounts than inside one and points towards an external supplier. The fourth question is what happens in the week the responsible person departs, asked in both directions, since an agency losing a practitioner reassigns the account while a one person internal function that loses its person loses the function entirely. A fifth consideration operates as a decision rule rather than a question, namely that if the first four cannot be answered from the client’s own data then the answer is not internal yet, because an internal hire inherits whatever measurement already exists and rarely receives the time to rebuild it, so the measurement should be built first.Four questions, and where each answer pointsQuestionPoints internalPoints externalContinuous or campaign-shaped work?Continuous, dailyBursts, seasonalDoes volume clear the thresholds?ComfortablyBelow themWhere does the knowledge compound?Buyers, offer, cyclePlatform mechanicsWhat happens when the person leaves?Bench behind themFunction disappearsThe rule underneath all fourIf you cannot answer them from your own data, the answer is not in-house yet. Build the measurement first.
Neither model wins in general. Each question points somewhere, and the pattern of the answers decides. Source : Method (2026)

Price the transition, not just the steady state

Whichever direction you move in, the first quarter costs more than either model does in isolation, and the platforms document why.

Relearning is not free. Automated bidding needs one to two conversion cycles to relearn after a change of conversion goal or action, and Google states that calibrating to a new objective can take up to three weeks. On Meta, changes to targeting, creative, optimization event or the addition of an ad are always-significant edits that restart the learning period.

Statistics do not travel with structure. Google states that when keywords are pasted into a new ad group, “the keywords’ performance statistics, such as impressions and clicks, are not transferred to the new location”. A rebuild loses the history against which you would have judged it.

Audiences have clocks. Google remarketing segments carry a maximum membership of 540 days and auto-close after 540 days of disuse; Customer Match requires at least 100 members; Meta website and app audiences carry 180 days. A transition that leaves audiences unused long enough starts them from zero.

Automation behaves differently under access change. Automated rules continue to run after access loss, while scripts stop, with Google stating that “the script will stop running but remain available”. Promotional credits are not transferred.

Which gives the transition a shape. Freeze structural change, hand over ownership and tags, verify tracking end to end, then let the relearning period run before comparing anything to the previous arrangement.

And a budgeting note. If you switch models and compare quarter one to the prior quarter, you are comparing a steady state to a relearning period. That comparison will favour whichever model you left, regardless of which is better.

What to do with this

Run the volume check before the cost comparison. Monthly conversions divided by ad sets, against roughly 50 per week per ad set on Meta and the published 15 to 30 conversions per 30 days on Google. That number decides whether you are buying operation or judgement, and the two are bought differently.

Then price the full external fee against the fully loaded internal cost including tooling, creative production, coverage and measurement upkeep. If the comparison still comes out close, the deciding factor is not cost. It is where the knowledge should live and what happens the week somebody leaves.

If visibility is the real motivation, contract for it instead. Own the accounts, require a dated change log, insist that reporting carries its definitions, and include an exit audit clause. The next steps are choosing a B2B acquisition agency and what agency reporting must contain.