He has earmarked the money from his Ward Member Grant fund to help St Barnabas Hospice run its Hospital at Home service.
This helps adults with a life-limiting or terminal illness continue to be cared for in their own homes, where they feel safe and comfortable and can spend more precious time with their loved ones.
St Barnabas Hospice Chief Executive Chris Wheway said: "This welcome donation will go to support clinical care in the Bourne area so it is very much for the people who live around here.
"It will pay for nursing teams to deliver hospital at home care for end of life patients, supporting people to die with dignity and in their own homes."
Services provided by St Barnabas Hospice together cost over £9m a year, and although the NHS gives some funding, the hospice also has to find its own money.
Part of that is through 25 charity shops in Lincolnshire, including the one on North Street, Bourne.
Cllr Ashwell said: "St Barnabas has been a personal interest of mine for some time - I volunteered in the shop for a number of years, and I have been able to use part of my grant to continue to support its work.
"They are thriving shops, generating money for the hospice's work and really benefit from local people spending money here which they know will be spent on services for local patients."
Hospice at Home care is tailored to a patient's specific needs, with the amount of care they get depending on how those needs change over time. St Barnabas also gives support for family and carers, which is generally provided in its hospices, but also at home.
Picture caption: Cllr Duncan Ashwell with St Barnabas Lincolnshire Hospice Chief Executive Chris Wheway
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