How much does an audit cost in the UK?

Median UK audit fee £14,885, from 29,561 fees filed with Companies House: £11,100 at £1–5m revenue, £15,600 at £10–25m, £28,400 at £100m+. Fees by revenue band, auditor tier and sector.

Median UK audit fee by revenue band

Median with interquartile range

Revenue band	Companies	p25	Median	p75	p95	Median fee % of revenue
Under £1m	5,937	£5,600	£12,075	£22,000	£50,552	—
£1–5m	2,286	£6,882	£11,100	£18,000	£44,880	0.43%
£5–10m	2,374	£9,283	£14,500	£21,418	£44,000	0.19%
£10–25m	7,490	£10,352	£15,600	£23,100	£44,751	0.10%
£25–50m	2,932	£12,500	£19,412	£30,000	£57,240	0.06%
£50–100m	1,182	£13,000	£22,000	£36,000	£79,946	0.03%
£100m+	517	£15,270	£28,400	£50,404	£108,230	0.02%

By auditor tier

Median UK audit fee by auditor tier and revenue band

Big 4Challenger firmsIndependent firms

By sector

Sectors with 150 or more fees on file. Fee as a share of revenue is the median across companies with £1m or more of revenue.

Sector	Companies	With a fee	Median fee	Fee % of revenue
Activities of other holding companies n.e.c.	15,219	3,136	£13,548	0.08%
Other business support service activities n.e.c.	10,696	1,552	£13,836	0.13%
Activities of head offices	8,425	1,314	£14,450	0.1%
Other letting and operating of own or leased real estate	6,010	478	£7,985	0.14%
Development of building projects	4,601	542	£10,475	0.08%
Financial intermediation not elsewhere classified	3,591	397	£12,840	0.25%
Buying and selling of own real estate	3,159	252	£8,682	0.11%
Other service activities n.e.c.	2,994	451	£14,000	0.12%
Production of electricity	2,900	187	£6,375	0.23%
Hotels and similar accommodation	2,394	467	£12,500	0.21%
Business and domestic software development	2,320	342	£17,950	0.17%
Other information technology service activities	2,260	349	£17,500	0.15%
Other professional, scientific and technical activities n.e.c.	2,012	231	£15,200	0.17%
Management consultancy activities other than financial management	1,772	300	£15,000	0.11%
Activities of financial services holding companies	1,657	163	£12,350	0.17%
Other human health activities	1,632	267	£11,400	0.12%
Information technology consultancy activities	1,602	259	£18,500	0.12%
Other manufacturing n.e.c.	1,530	418	£17,000	0.12%
Other specialised construction activities n.e.c.	1,259	358	£15,150	0.08%
Non-specialised wholesale trade	1,216	341	£17,000	0.1%
Freight transport by road	1,089	397	£14,000	0.08%
Construction of commercial buildings	1,049	315	£16,500	0.08%
Residential nursing care facilities	939	254	£9,630	0.15%
Residential care activities for the elderly and disabled	877	178	£9,450	0.17%
Other activities of employment placement agencies	755	167	£17,795	0.09%
Sale of new cars and light motor vehicles	712	233	£16,500	0.04%
Manufacture of other fabricated metal products n.e.c.	617	190	£16,875	0.11%
Motion picture production activities	604	165	£15,000	0.19%
Activities of construction holding companies	578	184	£15,132	0.07%
Manufacture of other plastic products	571	153	£14,700	0.1%
Electrical installation	531	187	£15,350	0.08%
Construction of other civil engineering projects n.e.c.	510	175	£17,750	0.08%
Non-trading company non trading	290	209	£7,500	0.07%

Questions people ask

How much does a statutory audit cost for a small UK company?

For companies with £1–5m of revenue the median fee is £11,100, with half of fees between £6,882 and £18,000.

How much does an audit cost for a £10m to £25m company?

The median is £15,600; the interquartile range is £10,352 to £23,100. As a share of revenue that is about 0.10%.

Do the Big 4 charge more?

Yes, size for size. Big 4 £45,000, challenger firms £18,750, independent firms £14,500 at £10–25m of revenue.