Counting the Hours First: The Delivery-Capacity Check That Should Precede Every 2027 Sales Target

Every November, a familiar sequence plays out in UK owner-managed businesses. The spreadsheet is opened, last year's revenue is marked up by a plausible percentage, and a sales target is circulated before the Christmas break. What rarely happens first is a colder question: can the business actually deliver that much work?

A sales target is a promise made to the market. A delivery ceiling is the promise the business can keep. Where the first exceeds the second, the gap does not disappear — it shows up as late projects, stressed staff, discounting to apologise, and a January that starts with firefighting rather than planning.

The argument here is straightforward. Before committing to a 2027 revenue figure, calculate how many billable hours your delivery team can genuinely supply. Then decide what to do about the difference.

The arithmetic almost nobody completes

Begin with gross availability, not with ambition. A full-time employee on a 37.5-hour week has 260 weekdays available in a typical year. Statutory holiday entitlement in the UK is 28 days for a full-time worker, inclusive of the eight bank holidays in England and Wales. That leaves 232 working days, or 1,740 hours per full-time equivalent.

That figure is the ceiling before reality intrudes. The useful number is what remains after four deductions:

• Annual leave and bank holidays. Already stripped out above, but check the pattern rather than the total. If three of your five delivery staff take leave in the same fortnight in August, that fortnight has a delivery ceiling far below the annual average.
• Sickness and absence. UK employers typically see absence in the region of two to three per cent of working time, with short-notice spikes in winter. Budget for it even if the current year has been kind.
• Onboarding and ramp. A new hire is not productive on day one. For technical or client-facing roles, allow three to six months before full contribution. Ramp time belongs in the plan, not in a footnote.
• Unavoidable admin. Internal meetings, timesheets, proposals, training, supervision, IT problems, and the informal help that colleagues give one another. For most service businesses, this consumes 25 to 35 per cent of paid time.

What remains is the billable ratio. Many well-run UK SMEs operate at 65 to 75 per cent. Anyone claiming 90 per cent is either measuring generously or categorising client work as something else.

A worked example

Suppose a professional services firm has six delivery staff and bills at an average of £95 per hour.

Gross hours: 6 × 1,740 = 10,440. At a 70 per cent billable ratio, that is 7,308 sellable hours, equivalent to roughly £694,000 of delivery capacity at the current rate.

Now suppose the 2027 sales target is £850,000. At £95 per hour, that requires 8,947 billable hours — a shortfall of more than 1,600 hours, or well over one additional full-time person once their own ramp and admin are accounted for.

That is the entire conversation in one line of arithmetic. The sales target is not wrong; it is simply unstaffed.

Stress-testing the ceiling across the year

An annual ceiling flatters the business because demand is not flat. Three tests are worth running before the target is signed off.

The seasonal test. Plot billable hours by month rather than by year. December, late August and the Easter fortnight typically lose days to leave and to clients who go quiet. Quarter-end months — March, June, September, December — often carry a spike in client demand that collides with internal reporting. A target that assumes even distribution will fail in the troughs and be salvaged in the peaks.

The concentration test. Ask what happens if one large client brings forward a project by a month, or if two clients slip. Capacity that is fully committed has no slack for either scenario. A ceiling with 10 per cent headroom is not inefficiency; it is insurance.

The people test. Capacity leaves the building whenever a key person does. Map the ceiling to individuals, not just to roles, and note where a single resignation would remove a disproportionate share of sellable hours.

Three levers, one decision

Once the gap between the sales target and the delivery ceiling is visible, the choice narrows to three options — and it is a choice, not a weather event.

Sell the capacity you have. Hold the revenue target at the ceiling and improve the mix instead. Fewer, better-paid projects often produce the same contribution with less strain.

Add resource. Hiring is the obvious answer and the slowest. Calculate the true cost of an additional billable hour — salary, employer National Insurance, pension, software, desk space, recruitment and ramp — before comparing it with the revenue it unlocks. In many UK SMEs, the break-even point arrives later than the hiring plan assumes.

Raise the rate. The cheapest capacity is a higher price on the same hours. A five per cent uplift at constant volume releases revenue without adding a single hour of delivery. This is often the correct first move, and the one most frequently skipped because it requires a client conversation rather than a job advert.

Most businesses need a blend. The discipline lies in stating which lever the target depends on, in writing, before January.

Where this belongs in the planning cycle

The capacity calculation should sit upstream of the sales target, not alongside it. Sequence it as follows: confirm the billable ratio from last year's timesheets, forecast 2027 availability month by month, convert to sellable hours at the current rate, apply the price decision, and only then set the revenue number.

Review it quarterly. Leave patterns, resignations, new client wins and rate changes all move the ceiling. A capacity forecast built in November and never revisited is a document, not a control.

A sales target tells the market what you want. A delivery ceiling tells you what you can honour. Businesses that grow reliably tend to know the second number before they announce the first.