Grow your ecommerce store · Business basics · 3 min read
How to Hire a Marketing Agency
Short answer
Define the specific outcome you want and your budget first, then shortlist agencies that specialize in your channel and industry. Ask how they'd approach your business, who'll do the work, how they report and what they need from you. Check references, keep ownership of your ad and analytics accounts, and start with a trial period before a long commitment.
Hiring an agency can accelerate growth or burn through your budget. The outcome depends mostly on choices you make before signing: clarity about goals, the right type of agency and a contract that keeps you in control.
Step 1: Define what you need
Write down:
- The goal: More first-time customers? Higher repeat purchase rate? Launching a new product?
- The channel: Paid social, Google Ads, email, SEO, influencer, content.
- Your current numbers: Revenue, conversion rate, customer acquisition cost, email revenue.
- What you'll do in-house vs hand off.
"We need marketing" leads to vague proposals. "We want to scale profitable Meta ads from $5k to $20k per month while keeping acquisition cost under $40" leads to useful ones.
Step 2: Set a realistic budget
Agency fees are separate from ad spend. If your total budget is small, most of it should go to media, not management. In that case, a freelancer or doing it yourself with training may make more sense.
Step 3: Choose the right type
| Type | Good for |
|---|---|
| Specialist (one channel) | Depth in your most important channel |
| Ecommerce-focused agency | Understanding of margins, LTV and store platforms |
| Full-service | Larger budgets needing coordination across channels |
| Freelancer | Smaller budgets and specific tasks |
Step 4: Build a shortlist
- Referrals from founders you trust
- Platform partner directories (Shopify, Klaviyo, Meta, Google)
- Agencies behind campaigns you admire
- Communities of store owners
Look at their case studies critically: are the clients similar to you, and are results specific and believable?
Step 5: Ask the right questions
- How would you approach our business in the first 90 days?
- Who will work on our account day to day, and what's their experience?
- How many clients does that person manage?
- How do you report, and which metrics matter most?
- What do you need from us (creative, approvals, data, budget)?
- How do you handle underperformance?
- Can we speak to two current clients?
- What happens to accounts and assets if we part ways?
Step 6: Watch for red flags
- Guaranteed results
- Asking to own your ad accounts, analytics or email platform
- Reports focused on vanity metrics (impressions, likes) rather than revenue and profit
- Long contracts with no exit before results
- No questions about your margins or customers
Step 7: Structure the contract
- Scope and deliverables in detail
- Fees: retainer, percentage of spend or performance elements
- Term: an initial period (often three months) with a reasonable notice period
- Ownership: You own ad accounts, pixels, analytics, creative and data. Grant agency access through business tools rather than sharing logins. See how to add someone to Facebook Ads Manager.
- Reporting schedule and format
- Confidentiality
Step 8: Onboard properly
Give the agency what they need quickly: access, brand guidelines, product information, past performance data and a single point of contact. Agencies do their best work with good inputs and timely approvals.
Step 9: Measure and review
Hold monthly reviews against the goals you set. Give honest feedback and expect it in return. If results lag, ask for a diagnosis and plan before deciding to switch.
Freelancer before agency?
If your budget is limited or you're unsure what you need, a skilled freelancer for one channel can be a smart first step. You'll learn what works for your business, build baseline data and develop a clearer brief. When you later hire an agency, you'll know exactly what to ask for and how to judge their proposals.
Specialist reads
- How to hire the best ecommerce email marketing agency
- How to hire a CRO consultant
- Maximizing your ROI when hiring an ecommerce agency
Frequently asked questions
How much does a marketing agency cost?
It varies widely by channel, scope and agency size. Many charge monthly retainers; ad agencies may charge a percentage of ad spend or a flat management fee, plus your actual ad budget.
Should I hire a full-service or specialist agency?
Small and mid-size stores often do better with a specialist for their most important channel (paid social, email or SEO) than a full-service agency spread thin.
How long before an agency shows results?
Paid ads can show signals within weeks; SEO and content usually take months. Agree on leading indicators and milestones upfront.
Sources and further reading
Platform features, prices and policies change. Check the official help pages linked above before you act on a detail that matters to your store.