The document discusses key questions around the UK's public finances in light of the 2021 budget. It notes that while the economic outlook has improved, the pandemic will likely leave lasting scars and elevated public borrowing. The Chancellor has extended many COVID support measures but only announced limited tax rises. There is debate around whether now is the right time to tackle high debt levels, as growth is the priority, but consideration of fiscal sustainability is also important. Any future deficit reduction would likely rely more on tax rises than spending cuts due to public sentiment against austerity.