In his Spring Statement, the chancellor said that he saw light at the end of the fiscal tunnel. We are afraid that this will turn out to have been an illusion. While public borrowing has been reduced to sustainable levels, our analysis of the prospects for the public finances points to severe challenges ahead. Sustainable borrowing has been achieved by cutting back on public services and restraining public sector pay. But ‘austerity fatigue’ is now setting in, and emerging recruitment difficulties and concerns about the quality of public services mean that there are already strong pressures for public spending to rise. On top of that, the demand for public services is increasing sharply to meet the needs of an ageing population. That provides a difficult background for the 2019 Spending Review. With debt already at an uncomfortable level, increasing public spending by substantially more than currently planned would need to be financed with higher taxation or more direct charging for services. The alternative option of continued spending restraint would not be palatable unless government can find significant ways to improve efficiency and get better value for money.