This paper argues that the Government should spend more on capital investment. The case was already strong before the Covid-19 crisis and has been strengthened since, as its financing has become more affordable. The paper highlights the importance of taking advantage of the present macro-economic environment afforded by low borrowing costs to provide stable – and sizeable – funding for new infrastructure through an increase in capital spending by the public sector. Additional capital spending, in excess of the fiscal rules, would be sustainable and affordable.