Why do we indicate fiscal deficit as % of GDP and not budget or govt revenues?

A fiscal deficit is referred to as a shortfall in an administration's income contrasted with its spending. A fiscal deficit is determined as percentage of GDP, or just as absolute dollars spent in abundance of income. In both the cases, the income figure incorporates just taxes and different revenues and rejects money acquired to make up the deficiency.

A state makes a fiscal deficit by spending higher amount of money rather than taking from sources such as taxes and different revenue barring obligation. The gap among the income and spending is shut by government borrowing.

Fiscal deficit cannot be indicated as a percentage of budget or government revenue because fiscal deficit is calculated as the difference between the total expenditure by the government and the total revenue of the government. Fiscal deficit is a broad concept and budget is a narrow concept.