WFM guideFinance & budget

Contact centre budget planning

Q: How much does it cost to run a contact centre per agent?

The all-in annual cost per seated agent in a UK contact centre (2024–2025 figures) is typically £35,000–£65,000, depending on sector, location, channel mix, and technology stack. The main drivers: salary (£22,000–£32,000 for standard contact centre agents in most UK markets outside London; £26,000–£38,000 in London); employer National Insurance and pension (typically £4,000–£7,000 per agent at current NI rates and auto-enrolment minimum); technology per seat (£2,500–£6,000 per agent per year, covering ACD, WFM, CRM, QA tools, and agent desktop); facilities (£1,500–£3,500 per seat per year, including office costs, IT infrastructure, utilities, and desk provision); training (£1,500–£4,000 per agent per year, including onboarding and recurrent training). A 100-agent operation therefore costs approximately £3.5M–£6.5M per year in total operating cost before management, specialist, and overhead roles.

Labour is 65–75% of contact centre operating cost. Every headcount decision — hiring, attrition, scheduling efficiency — is a budget decision. Understanding where the money goes (and what moves it) is the foundation of credible business cases and meaningful cost-per-contact improvement.

Cost category overview

Labour

65–75%

Agents, TLs, managers, WFM, recruitment

Technology

10–15%

ACD, WFM, CRM, QA, recording

Facilities

8–12%

Office space, IT infrastructure, utilities

Training

4–8%

Onboarding, recurrent, compliance CPD

Worked model: 100-agent UK contact centre

Regional UK (non-London). Standard voice + chat operation. 15% annual attrition. 2024–25 cost basis.

Category	Line item	Annual cost	% of total
Labour	Agent salaries (100 FTE at £26k avg)	£2,600,000	44%
	Employer NI + auto-enrolment pension	£450,000	7.5%
	Team leaders (1:12 ratio = 8 TLs at £32k avg)	£256,000	4.3%
	Operations managers (3 at £45k avg)	£135,000	2.3%
	WFM analyst / resource planner (2 at £35k avg)	£70,000	1.2%
	Recruitment (15% annual attrition = 15 hires at £2k avg cost)	£30,000	0.5%
Technology	ACD / telephony (per-agent SaaS licence at £1,800/agent/yr)	£180,000	3.0%
	WFM platform (at £600/agent/yr)	£60,000	1.0%
	CRM platform (at £1,200/agent/yr)	£120,000	2.0%
	Quality management / recording (at £500/agent/yr)	£50,000	0.8%
Facilities	Office space and utilities (at £2,000/seat/yr, regional UK)	£200,000	3.3%
Facilities	IT infrastructure per agent (hardware, network, security)	£150,000	2.5%
Training	Initial training (15 new hires at 4-week training cost = £3.2k/hire)	£48,000	0.8%
Training	Recurrent training and compliance CPD	£60,000	1.0%
Total annual operating cost (100 agents)		~£4,359,000	100%

Excludes: site management, finance/HR overhead allocation, depreciation on on-premise technology, and any overhead charges. Adds: employer NI at 13.8% and auto-enrolment minimum employer contribution (3%).

Five levers that move cost-per-contact

At 100 agents handling ~1.95M contacts/year (using the model above), cost-per-contact = approximately £2.24. These five levers move that figure:

AHT reduction (−10%)

Impact mechanism

Lower AHT → fewer agents needed at same volume and SL → headcount reduces by ~8 agents → labour cost falls by ~£250k → cost-per-contact falls to ~£2.11 (−6%).

How to achieve it

Knowledge base investment, call structure training, ACW reduction. See AHT guide.

Risk

If AHT is reduced by cutting calls short rather than improving efficiency, FCR falls and repeat contacts rise — offsetting the saving.

FCR improvement (+10pp)

Impact mechanism

Higher FCR → fewer repeat contacts → effective volume handled by same agents drops → cost-per-contact falls. At 75% → 85% FCR on 1.95M contacts/year: 195,000 fewer repeat contacts. At 8-min AHT, 26,000 agent hours freed = ~14 FTE. Cost-per-contact falls to ~£2.08 (−7%).

How to achieve it

Knowledge management, agent training, root cause analysis of repeat contacts. See FCR guide.

Risk

FCR is hard to measure accurately. Ensure your FCR measurement covers cross-channel repeats, not just same-channel same-day repeats.

Attrition reduction (15% → 10%)

Impact mechanism

At 15% attrition, 15 agents leave and must be replaced each year. At 10%, only 10. Saving: 5 fewer hires at £2k recruitment cost + 4-week training cost (£3.2k) + 12-week ramp productivity loss (~£5k) = £51k saved. Plus indirect: higher average tenure → lower blended AHT, higher FCR. Total impact: £100–150k/year for a 100-agent operation.

How to achieve it

Occupancy management, scheduling flexibility (compressed hours), wellbeing programme. See attrition guide.

Risk

Attrition reduction initiatives have a 3–6 month lag before showing in the data.

Occupancy improvement (75% → 83%)

Impact mechanism

Higher occupancy means fewer idle agent-hours for the same volume. At 75% occupancy, 100 agents carry 25% idle time. At 83%, idle time falls to 17%. Freeing 8 FTE-equivalent idle hours → either fewer agents needed or more contacts handled. Cost-per-contact falls by 8–10%.

How to achieve it

Better scheduling (matching agent availability to volume profile), blended agent skills (chat + voice to fill gaps), better adherence management.

Risk

Above 85–88%, burnout risk rises and the 3–6 month attrition lag follows. Do not target occupancy above 85% without a wellbeing response plan.

IVR / self-service containment (+10pp)

Impact mechanism

10pp increase in true IVR containment reduces agent-handled volume by 10%. At 1.95M contacts/year, 195,000 fewer contacts reach agents. At 8-min AHT → 26,000 agent hours → ~14 FTE reduction → £400k labour saving (partially offset by AHT uplift on remaining contacts and technology cost of the IVR improvement). Net saving: £250–350k. Cost-per-contact on agent-handled contacts rises (fewer but harder contacts), but cost per original contact falls.

How to achieve it

IVR menu redesign, natural language routing, digital self-service investment. See IVR guide.

Risk

System-reported containment overstates true containment. Validate with repeat-contact analysis before claiming the saving.

Budget planning questions

How much does it cost to run a contact centre per agent?

All-in annual cost per seated agent in the UK (2024–25): £35,000–£65,000 depending on sector, location, and technology stack. Components: salary £22k–£32k, employer NI/pension £4k–£7k, technology per seat £2.5k–£6k, facilities £1.5k–£3.5k, training £1.5k–£4k. A 100-agent operation costs approximately £3.5M–£6.5M per year in total operating cost before management and overhead allocations.

What percentage of contact centre costs are labour?

Labour is typically 65–75% of total contact centre operating cost. Agent salaries alone are 44–55% of total cost. Because labour dominates, any headcount change (from attrition, AHT improvement, IVR containment, or scheduling efficiency) has a disproportionate impact on the total budget: a 5% FTE reduction typically reduces total operating cost by 3–4%.