In the national accounts, saving is estimated by subtracting household consumption expenditure from household disposable income plus the change in net equity of households in pension funds (since this component is also a determinant of household disposable income but with an opposite sign).
Household disposable income consists essentially of income from employment and from the operation of unincorporated enterprises, plus receipts of interest, dividends and social benefits minus payments of income taxes, interest and social security contributions. Note that enterprise income includes imputed rents paid by owner-occupiers of dwellings.
Household consumption expenditure consists mainly of cash outlays for consumer goods and services but it also includes the imputed expenditures that owner occupiers pay, as occupiers, to themselves as owners of their dwellings.
Households include households plus non-profit institutions serving households.
The household saving rate is calculated as the ratio of household saving to household disposable income (plus the change in net equity of households in pension funds).