When making financial orders on divorce, the case of Duxbury v Duxbury ( Fam 62n, CA) introduced a calculation which provided a means to achieve a lump sum as an alternative to ongoing periodical payments (maintenance) between ex-spouses. This calculation enables couples to achieve a clean break (i.e. no ongoing financial ties after divorce), so that a lump sum is invested to provide a continuing annual income. In my recent Child and Family Law Quarterly article, on which this blog is based (‘Reconsidering the Duxbury Default’  CFLQ 275), I explore the Duxbury calculation in greater depth, presenting findings from an analysis of reported cases over the past 10 years and exploring why the courts appear reluctant to move away from it. However, in this blog, I want to focus on a practical concern arising from the continued use of Duxbury – the failure to provide for any allowance for costs incurred in setting up and running the invested funds and why this is important for those individuals who are required to invest a Duxbury lump sum to provide for future income.