Agency budgeting: cost groups and review triggers

What to take away

Agency budgeting starts with a spreadsheet that lists the costs a client or agency expects a campaign or retainer to generate, with an owner, a payment date and a variance column for each line.

Start with the cost groups, not the totals

Most templates fail because people start with a grand total and work backwards. Start instead with the groups that generate spend. People covers salaried staff, freelancers and contractors. Media covers paid placements and platform fees. Production covers photography, video and print. Tooling covers software subscriptions and licences.

Each group needs its own subtotal so a client can see where the money sits. A retainer client paying for example £4,500 a month may find that £2,700 of it is people time, £900 is media and the rest is tooling and admin.

Keep the groups in the same order on every version. When a client compares two quotes side by side, matching rows do more for trust than a longer list of line items.

Price the people line properly

Salary is not the full cost of a person. Employer National Insurance contributions and pension contributions sit on top, and rates depend on thresholds. HMRC publishes the rates and thresholds for employers; check HMRC's current figures before you commit to a day rate, as employer on-costs affect any salary-based calculation.

For a worked example, take a team member on £38,000 a year. Include applicable employer National Insurance and pension contributions in the cost, then account for non-billable time. The Pensions Regulator explains employers' auto-enrolment duties. If you recover only 70 per cent of their hours, the rate rises sharply.

Split the people group into named roles rather than one lump. A single team cost row hides the fact that a senior strategist and a junior executive cost very different amounts per day.

Decide which costs are pass-through

Media spend, ad platform fees and third-party licences are usually pass-through: the client pays what the agency pays. Everything else is usually wrapped into a fee. Make this a column in the template, because disputes start when a client assumes a cost is included.

Use the same cost groups whether you charge a retainer, project fee or performance-based fee. Record the charging basis separately so the client can distinguish how the work is priced from what it costs.

Add a handling field next to every pass-through line, even if you leave it at zero. Some agencies charge a small percentage on media; whatever you decide, record it so the invoice matches the template.

Handle VAT and currency lines explicitly

A UK agency charging VAT must show it as a separate line, not bury it in the fee. For most business-to-business services, the place of supply is where the customer belongs, so an overseas business client may mean no UK VAT is due; exceptions apply. Check the treatment with HMRC and record the currency, exchange rate and date. Never leave a figure unlabelled. If you cannot source it, write "illustrative" beside it.

For UK campaign claims, allow time to substantiate objective claims before ads run. The Advertising Standards Authority administers the non-broadcast CAP Code, written by the Committee of Advertising Practice.

Add a compliance and review line

Pre-clearance and legal review are real costs. UK non-broadcast ads can be checked through the CAP Copy Advice service before they run, which can help avoid the cost of correcting a complaint afterwards. Budget a monthly figure for it.

Set review triggers: a 10 per cent variance on any group, a change in scope, or a new market. Without triggers a template becomes a historical document. Name the person who owns each trigger and the action it starts, such as a reforecast or a change request.

Before and after: what changes

Common questions

What should a marketing agencies budget template include at minimum?

At minimum: cost group, line description, owner, amount, currency, whether it is pass-through, any handling fee, tax treatment, exchange rate and date where relevant, actual/quoted/illustrative status, review date and invoice reference. Anything less and you cannot reconcile it against an invoice.

Should the template use day rates or monthly fees?

Use both. Day rates show capacity cost; monthly fees show what the client pays. Keeping both lets you test profitability before you sign a retainer.

How often should the template be reviewed?

Monthly for active campaigns, and immediately when scope, media spend or headcount changes. Quarterly alone is too slow for retainer work.

Are hidden fees a template problem or a contract problem?

Both. Our guide to hidden costs for marketing agencies in England explains which extras typically appear late, and adding those lines to your template up front is the simplest way to stop them surprising a client.