Government (national and local) spends approx £1065B a month year. Currently borrowing £65B a quarter so that suggests tax income is approx £805B. So HS2 is about an eighth of a year, or 6 weeks of taxes in one year.How much does the U.K. “earn” in a day? The country “earns” from taxes, so how much is collected each day?
Then, for instance, when we get daft figures like the cost of HS2 thrown at us we can put that figure into context.
ie, would it take 5 days of tax collection to pay for it or 500 days?
Of course the mistake a lot of people make is comparing a national expenditure to a household/personal finances. It's not the same because a country never dies, generally gets bigger (or can increase value) and is in a population of other never-dying countries.