The billing model matters more than most businesses expect, because it quietly shapes behaviour on both sides. A retainer encourages an agency to think long term. Hourly billing encourages clients to stop asking questions. Percentage of ad spend encourages spending more. Choosing the model that fits the work is a real decision, not an administrative one.

The four models at a glance

Model	Typical South African cost	Suits
Monthly retainer	R5,000 to R35,000	SEO, advertising, social media, anything ongoing
Fixed project	R12,000 to R100,000 plus	Websites, brand identity, audits, campaigns with an end date
Hourly	R550 to R1,500, specialist to R2,500	Advisory, training, ad hoc problem solving
Percentage of ad spend	10 to 20 percent of media	Paid media management at larger budgets

All figures exclude VAT. Advertising and media spend is billed separately by the platform and is never marked up by Juicy Designs.

Retainers: for work that compounds

A retainer buys an agreed scope each month for a fixed fee. It suits SEO, paid advertising, social media and content, because all of those improve through continuous iteration rather than one-off effort. Stopping and restarting destroys the compounding that makes them work.

The main risk is scope drift, in both directions. Some retainers quietly shrink until you are paying for a monthly report. Others expand until the agency is working at a loss and quality drops. The protection is the same either way: an explicit written scope, reviewed quarterly.

Below roughly R5,000 a month, retainers stop making sense in most competitive markets, because the hours available cannot move anything. If that is your budget, a focused project or a single channel done properly will beat a thin retainer spread across three.

Projects: for work with an end

Fixed project pricing suits anything with a defined deliverable and a completion date. A website build, a brand identity, a technical audit, a campaign for a specific launch.

The advantage is certainty on both sides. The risk is that the scope defines the outcome, so anything not written down becomes a variation with a fee attached. Spend the time on the brief; it is where project pricing succeeds or fails.

Projects are also a sensible way to start a relationship. A fixed-cost piece of work tells you how an agency communicates, whether they meet deadlines and whether the output is good, before either side commits to an ongoing arrangement.

Hourly: narrow but useful

Hourly billing suits advisory work, training and specific problem solving. It works badly for ongoing marketing, for one under-discussed reason: it changes client behaviour. When every phone call carries a fee, clients stop calling. Questions go unasked, small problems go unmentioned, and the agency loses the context it needs to do good work.

South African hourly rates run roughly R550 to R1,500, with specialist strategy or technical consulting reaching R2,500. Rates well below that range generally mean junior delivery, which may be fine depending on the task.

Percentage of ad spend: watch the incentive

Charging 10 to 20 percent of media spend is standard for paid media management, and has a genuine logic: a larger account is more complex and takes more time.

The problem is the incentive it creates. The agency's income rises when your spend rises, which means the recommendation to increase budget is never fully disinterested. That does not make the model dishonest, but it does mean you should apply extra scrutiny to budget-increase recommendations under it.

A flat management fee removes the tension entirely. Juicy Designs charges a flat fee and bills advertising spend at cost with no mark-up, so our recommendation on your budget is not affected by what we earn.

Choosing

Ask one question: does this work have an end? If yes, price it as a project. If no, use a retainer. Keep hourly for advice. And if you are offered percentage of spend, decide whether you are comfortable with the incentive before agreeing, rather than afterwards.

Juicy Designs works on month-to-month retainers with no lock-in, and fixed pricing for project work. See our full pricing, or read what a marketing retainer actually includes before you sign one.

Frequently asked questions

Should I pay my agency a retainer, per project or hourly?

Use a retainer for ongoing work such as SEO, advertising and social media, where consistency compounds. Use project pricing for defined pieces with a clear end, such as a website or brand identity. Use hourly only for advisory work. Paying hourly for ongoing marketing tends to make clients avoid asking questions, which damages the work.

What is a typical South African agency hourly rate?

Between R550 and R1,500 per hour for most agency work, with specialist strategy or technical consulting reaching R2,500. Rates at the low end usually indicate junior delivery.

Is percentage of ad spend a fair model?

It is common and workable, typically 10 to 20 percent, and it scales naturally with account complexity. The drawback is the incentive: the agency earns more when you spend more. A flat management fee removes that tension, which is why Juicy Designs uses one.

What is the minimum sensible retainer?

Below about R5,000 per month, a retainer buys too few hours to move anything meaningfully in a competitive market. If your budget is under that, a one-off project or a focused single channel usually produces more than a thin retainer spread across several.

Can we start with a project and move to a retainer?

Yes, and it is often the sensible sequence. A defined project such as a website build or an audit lets both sides test the working relationship at a fixed cost before committing to an ongoing arrangement.