Key term

What it means

A budget deficit is the shortfall in a period, often a year, between money coming in from taxes and other sources and money spent by the public sector. In UK headlines the broad measure is usually called public sector net borrowing. The deficit is a flow over time; public debt is the amount owed at a point in time. Borrowing to cover a deficit generally adds to debt, but the change in measured debt can also be affected by other transactions.

Example

In a made-up year, the public sector receives £100 billion and spends £120 billion. The deficit is £20 billion for that year. This is not the total stock of debt built up over many years.

Why it matters

A government can reduce its deficit while it still borrows money. Calling a smaller deficit “paying off the debt” would be misleading.

Also known as

fiscal deficit

Related terms

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