Capacity planning for an agency: matching people to client work month by month

On the first Monday of the month, an SEO agency's delivery head opens three client calendars. One client wants a content batch by the fifteenth. Another has asked for a technical audit. The third is about to sign a retainer. She knows two writers are on leave in the same fortnight, but nobody has put that next to the promises. By Wednesday the team is guessing.

Capacity planning removes the guessing. It does not need special software. It needs one honest sheet and a monthly habit. This post shows how to build both.

Capacity is the amount of useful work your people can do in a month. Demand is what clients have asked for or are likely to ask for. Planning compares the two by role and by month. When demand is higher, you either hire, reschedule, narrow the scope or decline. When it is lower, you fill the gap with pitches, internal work or training.

The aim is not to keep everyone busy every hour. People who run flat out make errors and leave. The aim is to see trouble early enough to choose a calm response.

1. 1

   List roles and skills, not just names

   For each person note the role, the services they can deliver and any limits. A writer who can do technical SEO briefs is different from one who cannot.

2. 2

   Work out real available time

   Start with working days, then take away leave, public holidays, internal meetings, training and the time managers spend reviewing. What remains is the figure you plan against. Choose the allowance for each item based on how your agency actually works.

3. 3

   List client commitments by month

   For every client, write the deliverables, the roles needed, the effort estimate and the deadline. Mark each one as signed, likely or hoped for.

4. 4

   Place work against people

   Allocate each deliverable to named people for specific weeks. Show the total for each person and each role next to their available time.

5. 5

   Mark the gaps and decide

   Highlight months where a role is overbooked or idle. For each, write the decision, the owner and the date by which it must be made.

Start with the role view. How many writer weeks, designer weeks and strategist weeks does next month need? This tells you whether the team is short before you argue over who does what. Then move to names. A person-level view shows who is carrying too much even when the role total looks fine.

SEO work is a good example. Audits, link outreach and content production draw on different skills and arrive in uneven waves. See how SEO agencies split these roles before you decide who should cover what.

Most plans fail because they count only the visible work. Four items hide in the margin.

• Revisions: the first draft is rarely the last. Allow an agreed number of rounds in the plan and in the client scope.
• Pitches and proposals: they take the best people at unpredictable times.
• Account management: calls, status notes and approvals use hours that never appear in a task list.
• Leave and sickness: festival weeks and exam seasons make leave cluster. Plan for it in advance.

Last month: planned against actual hours by role, and the main reasons for any difference.
Next three months: demand by role, split into signed, likely and hoped for.
Availability: leave, training, new joiners still learning, and anyone leaving.
Overbooked people: who, which weeks, and what moves.
Idle capacity: who, which weeks, and what internal or pitch work fills it.
Decisions: hire, delay, narrow scope, outside help or decline, each with an owner.
Next review date and who updates the sheet before it.

A short peak is not a reason to add a permanent salary. A steady gap over several months is. Look at how long a role has been overbooked, whether signed work is behind it and whether a different mix of skills would solve it. Your HR strategy and workforce planning approach can turn this sheet into a hiring plan with timing, because a hire takes weeks to find and more weeks to become useful.

Often the first answer is a change in scope or timing, agreed early with the client. Say what can be delivered by when. A client usually prefers an honest new date to a rushed piece of work.

Capacity planning shows what could be done. Utilisation tracking shows what was done. Use both. The utilisation and billable hours post explains how to track the second. If account managers earn through retainers, check whether their incentive pushes them to promise more than the plan allows. The post on incentives for account managers covers that risk.

Give one person ownership of the sheet. Update it weekly, review it monthly and keep the format the same. Show it to team leads so they trust it and correct it. After three cycles you will have your own data on how long tasks really take, and your estimates will improve without any new tool.