Small full-service marketing agency

Build a small team that runs campaigns, content and ads for several business clients.

A creative team planning an advertising campaign around a whiteboard in a modern office.
Startup cost$2k to $10k
Monthly revenue$4k to $20k
Time needed30+ h/week
First incomeMonths
  • $2k-10k
  • Full-time
  • Own premises

Estimates for a small start in the US, not guarantees.

Official data

15,512 US businesses with employees in this field, +3.7% in a year

NAICS 541810 “Advertising agencies”. Source: U.S. Census Bureau, County Business Patterns 2023.

What it is

A small agency with you leading and a few freelancers or employees handling content, design and ad management. You may rent a small office or coworking space.

Your first three steps

  1. Form an LLC with your state, get an EIN and open a separate business bank account
  2. Line up two or three reliable freelancers (writer, designer, ad specialist) you can bring in on client work
  3. Create a clear service menu and sign your first two or three retainer clients before taking on fixed costs
Who pays

Growing small and mid-sized businesses that want a team handling their marketing for them.

How it makes money

Monthly retainers of a few thousand dollars per client, plus project fees. Margins depend on how well you price against staff or freelancer costs.

Skills that help
  • Managing clients and deadlines
  • Campaign planning and reporting
  • Hiring and managing freelancers or staff
Watch out for
  • Check state rules on hiring employees versus contractors, since misclassifying workers can be costly
  • Workers' compensation insurance is likely needed once you hire, so check your state's requirements
  • Get general liability and professional liability insurance
  • Check local business license and sales tax rules for your services, as these differ by state
  • Cash flow can be tight if clients pay late while you pay your team
  • Losing one large client can hit revenue hard

Deep research report · US

Everything you need to start: small full-service marketing agency

Researched with live web search for United States: real startup prices, the licences and rules, what others charge, a break-even example, how to find your first customers and a 30-day launch plan. With sources.

  • Startup costs with real prices
  • Licences, registration and rules
  • Pricing: what others charge
  • Break-even example
  • Finding your first customers
  • 30-day launch plan
  • Risks and how to reduce them
Ready in about 2 minutes · one-off payment, tax included

See a full sample report

Questions people ask

How much does it cost to start a small marketing agency?

Estimates typically run around $2,000 to $10,000 to start, depending on whether you rent an office or coworking space, how many freelancers or staff you bring in, and your insurance. Treat this as an estimate.

How much can a small marketing agency earn?

Monthly revenue is typically estimated at around $4,000 to $20,000, depending on your client count, pricing and team size. Cash flow can be tight if clients pay late, and losing one large client can hit revenue hard.

What rules should I check before hiring for a marketing agency?

Things to check: state rules on hiring employees versus contractors, workers' compensation requirements once you hire, general and professional liability insurance, and local business license and sales tax rules for your services, which differ by state.

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