A stipend is a tax-free form of salary, which is paid towards living expenses. A typical award would be fees plus an annual stipend (£15,609 per year for 2021/22).
All doctoral students funded by UK Research and Innovation are now eligible for the full award – both the stipend to support living costs and tuition fees at the home student (UK) rate. From 2021 onwards, EU students are classed as international students for fee purposes.
The UKRI website provides extensive guidance on eligibility and finding funding for your PhD.
More information on doctoral funding