Two classes of government income: revenue receipts neither create a liability nor reduce an asset, while capital receipts either create a liability (borrowing) or reduce an asset (disinvestment).
The tax-versus-non-tax split, the debt-versus-non-debt capital receipt distinction, and the placement of disinvestment are recurring budget facts.
Revenue receipts (no liability, no asset reduction) versus capital receipts (borrowing or asset sale); borrowings are capital receipts that create debt, while recovery of loans and disinvestment are non-debt capital receipts.
Revenue receipts: tax plus non-tax, no liability; capital receipts: borrowings, loan recovery, disinvestment.