Why do we have Budgets?

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Say “Budget Day” and you might think of various Chancellors over the years holding up that famous red briefcase in Downing Street -- but Budgets are more than just a photo opportunity. They tell us whether we're going to be better - or worse off. But why do we have Budgets? Will the Chancellor put up taxes? What about public sector pay? For 5 Questions On, the BBC's economics correspondent, Dharshini David, explains all you need to know. (Image: Getty/Dan Kirkwood)