All charities registered as 'tax exempt' for charitable purposes may reclaim GST directly from the taxes office.
If your charity hasn't already been issued a GST Reference number you should apply to the tax department in writing enclosing a copy of your tax exemption letter. You will need this number to complete your claim and this should be inserted on the claim form.
Follow this link and read the instructions carefully to make a claim: https://www.gov.je/taxesmoney/gst/businesses/industry/pages/charitiesnonprofit.aspx#anchor-3
Reclaiming tax from lump sum donations
If you donate a sum of £50 or more, the charity can receive an extra 25%. Please follow this link to find out how this works:
Reclaiming tax on payroll giving
Employers can easily set up 'payroll giving' for their employees and if the annual amount equates to £50 or more, the charity can then claim an extra 25% as a 'lump sum donation'. Please follow this link to find out more: https://www.gov.je/taxesmoney/incometax/charities/pages/makingdonation.aspx