Changes in the labour market, high rates of working age poverty, major welfare reforms and more recently the Covid-19 pandemic have drawn renewed attention to income security. Existing research has identified the important role of relational support in helping people cope with low income, but less is known about the role of support for those coping with the potentially destabilising effects of income change which can affect people over relatively short periods of time. This article focuses on how relational coping strategies are utilised by those experiencing such income change. The data are drawn from a qualitative longitudinal study of the experience of income change and insecurity in 15 low-income households in the UK which included repeated in-depth interviews and weekly financial diaries completed in periods of up to five months. The article explores the relational strategies adopted by participants to ‘get by’ as well as examining how strategies are adopted by those on different levels of low income and with differing networks. The article argues that these strategies illuminate the importance of income change in the experience of low-income households, develop the concept of income insecurity, and provide lessons for policy in providing flexible and responsive support when income changes.