The Institute of Acoustics Limited

Analysis

The Institute of Acoustics Limited is a registered charity in England and Wales, based in Milton Keynes. It was registered in March 1974, 52 years ago. Its declared purposes cover education/training, which this site groups under education and training. Legally it is a charitable company (Companies House number 01157249). It says it makes grants to individuals and provides services.

In the financial year ending December 2025, The Institute of Acoustics Limited reported income of £1.3m and spending of £1.6m, spending 118% of what it took in. Across the 5 years on record, from December 2021 to December 2025, income grew from £994k to £1.3m (+33%), an average of +7.4% a year. Over the whole period it spent 108% of the income it received.

Among 21,402 England and Wales charities whose main cause is education and training and that reported income, The Institute of Acoustics Limited sits at the 94th percentile: it is larger than about 94% of them. Against every charity in England and Wales with reported income it ranks in the 95th percentile. Charities of a similar size with the same main cause include West Lancashire County Scout Council (£1.3m), British Friends of the Bible Lands Museum, Jerusalem (£1.3m) and S W Durham Training Limited (£1.3m).

In its latest detailed accounts, income came from charitable activities 96% and investments 2.7%. Gifts in wills alone brought in £4,555. Charitable activities took 64% of spending and raising funds 21%. Reserves of £1.1m would cover about 7 months of spending at that rate. It employed 8 people.

Data notes from the register: Spending has exceeded income in each of the last three reported years, so the charity has been drawing on reserves or other funds.