Record $8b 'slippage' in NSW expenditure

Labor's John Graham says $8 billion in capital spending being pushed to next year is astonishing. (Bianca De Marchi/AAP PHOTOS) (AAP)

NSW Treasury expects a record $8 billion worth of capital expenditure promised in June's state budget will fail to be spent this financial year.

State budget estimates hearings were told on Monday that $8 billion of $22.6 billion in capital works earmarked for 2022/23 would "slip" into future years.