Full membership (individuals)

Membership runs from 1^st June until 31^st May of the following year. The annual membership fee to qualify for full membership is as follows:

• Gross income under £20,000: nil (free membership)
• Gross income over £20,000: £10

Given the low membership fee, members are invited to make an additional, voluntary, donation. We suggest the donation should be such that together with their annual membership fee it makes a total payment of at least 0.05% of their gross income, rounded down to the next £5 (see Table below). UK taxpayers are urged to Gift Aid this donation. HMRC then gives an additional 25% of the donation. Higher rate tax payers can claim tax relief on donations, reducing the cost to themselves.

Subscriptions and suggested donations for individual members

Individual’s annual gross income	Mandatory membership fee	Voluntary donation suggested	Total payment suggested
<£10,000	Nil	Nil	Nil
£10,000 – <£20,000	Nil	£5	£5
£20,000 – <£30,000	£10	Nil	£10
£30,000 – <£40,000	£10	£5	£15
£40,000 – <£50,000	£10	£10	£20
£50,000 – <£60,000	£10	£15	£25
£60,000 – <£70,000	£10	£20	£30
Then for each extra £10,000	No change	Add £5	Add £5
For example
£130,000 – <£140,000	£10	£55	£65

Members of organisations which are THSG members may deduct £5 from the mandatory membership fee and total payment suggested.

Individuals in countries where the median income is under £20,000 may deduct £5 from the mandatory membership fee (but not the total payment suggested)

Individuals in countries where the median income is under £20,000 may deduct £7.50 from the mandatory membership fee (but not the total payment suggested)

In some Global South countries with a weak currency, an arrangement may be made to collect and manage subscriptions locally in local currency and to adjust the £20,000 starting point for mandatory subscriptions and the £5 figure for rounding in line with purchasing power parity. Otherwise, currencies will be converted from GBP at standard exchange rates.

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