Growth Marketing
September 29, 2026

Can a Marketing Agency Help If You Don't Have an <blue>In-House Marketing Team?</blue>

Troy Diffenderfer
Troy Diffenderfer
Title card: Can a Marketing Agency Help If You Don't Have an In-House Marketing Team?
Table of contents

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Yes. A marketing agency can act as the marketing team for a small business that has none, handling strategy, campaign builds, media buying, creative testing, tracking, and reporting. What it cannot do is make the decisions only the business can make: which offers to run, what margins allow, and how fast leads get a call back. Plan on a few hours a week during the first month, then roughly an hour or two a week once the program is running.

This guide lays out who does which work, where your time actually goes, and what to hand over in week one so the agency is not waiting on you.

Who does the work when you do not have a marketing team?

The agency does the specialist work, you supply the business context and the final calls, and a few decisions are made together. A clear split looks like this:

  • The agency does: channel strategy, campaign setup, day-to-day bid and budget management, audience and creative testing, conversion tracking, and reporting. In a Google and Meta ads management engagement, that covers nearly every hour of hands-on work.
  • You do: approve offers and pricing, share margins and product costs, explain who your best customers are, respond to leads or orders, and sign off on total budget.
  • You decide together: creative direction, landing page changes, which tests run next, and when to shift budget between channels.
Onward team member building and managing campaigns on a laptop
The agency's specialists handle the builds, bids, tests, and tracking day to day.

How much time will you need to spend?

Most of your time goes into the first month, when the agency needs access, context, and approvals. After that, the commitment drops to short check-ins and quick sign-offs. The ranges below are planning estimates, not guarantees, and they rise if approvals involve several people.

  • Weeks 1 to 4, onboarding: about 3 to 5 hours a week for a kickoff call, granting account access, answering questions about customers and margins, and approving the first campaigns.
  • Month 2 onward, steady state: about 1 to 2 hours a week for a 30-minute check-in, creative approvals, and budget questions.
  • Once a month: a 60-minute review of new customers, CAC, and what changes next.

One task is easy to forget because it never appears in the agency's scope: following up on the leads and orders marketing creates. If calls go unanswered for two days, no campaign setting will fix the result. Transitions also take a few weeks to settle, which the agency transition playbook walks through step by step.

What should you hand over in week one?

Handing these over in the first few days removes most onboarding delays:

  1. Admin access to ad accounts, Google Analytics, and Google Tag Manager.
  2. Access to your store, booking system, or CRM, so results can be checked against real sales.
  3. Product costs, typical margins, and any minimum order or job size.
  4. Brand assets: logo, fonts, photos, and past ads that worked or failed.
  5. The five questions customers ask most before buying.
  6. One named person who can approve spend and creative within a day.

What goes wrong when nobody owns marketing internally?

The most common failure is not bad ads. It is slow decisions. Tests stall while creative waits a week for approval, a price change goes live without the agency knowing, or nobody compares the agency's report with actual sales. Each gap wastes spend quietly.

The fix is a single internal owner, even if marketing is only a small part of that person's job. In many small businesses it is the founder or an operations manager. Their job is not to do marketing but to answer questions quickly and keep the agency's work tied to what is happening in the business. When coordination lives with the agency instead, you get one team for media buying and project management and far fewer hand-offs.

Two marketers working on laptops at a shared table in an open office
With the hands-on work handled by the agency, the owner's job shifts to quick answers and final calls.

What should the agency handle without being asked?

A good agency should run the program proactively, not wait for instructions. Expect a regular written summary, a plan for the next tests, early warnings when results slip, and budget recommendations in both directions, including when to spend less. Reporting should come from dashboards connected to your sales data rather than screenshots from ad platforms, which is the core of engineered analytics.

How does Onward work with businesses that have no marketing team?

Onward assigns dedicated senior media buyers and data engineers to each account and acts as a full growth team, with media strategists, analysts, and operators working as an extension of the client's marketing department. Onward's stated response time is same day, and pricing is a flat monthly fee on month-to-month terms with $0 fees on ad spend.

For 500 LEVEL, a DTC sports apparel brand, Onward ran profit-first buying and continuous creative testing, and new customers grew from 6,900 to 19,000 year over year, as shown in how 500 LEVEL grew revenue 156%.

Do you need to hire a marketer before hiring an agency?

No. Most small businesses can start with an agency and one internal owner who spends a few hours a week. A dedicated in-house marketer becomes worth considering when marketing needs daily coordination with sales, product, or content that only an insider can produce.

The bottom line

You do not need a marketing department to run effective marketing. You need an agency that does the work, one person who can make fast decisions, and a shared view of real sales. If that is the setup you want, talk to Onward's team about how the first month would work for your business.