The surplus for the current financial year is likely to exceed $70 billion - more than double the original estimate. The windfall is mainly due to a large increase in land revenue and stamp duty. Based on the balance of the Government funds released yesterday - boosted by $4.1 billion in underspending on capital works and extra land revenue - the capital works reserve fund will end up about $23.85 billion higher than expected. The underspending includes $1.1 billion not used on delayed capital works and costs saved in delayed resumption of land. Land revenue for 1997-98, before being shared with the SAR Land Fund, is $71.9 billion. The capital investment fund is also boosted by $1.56 billion, mainly because the Government has not used money set aside for 'additional commitments'. Underspending in the loan fund is attributed to the Housing Society's delay in finding sites for sandwich-class housing schemes. For the General Revenue Account, which mainly covers spending for government departments, the revised expenditure is $161.77 billion, about $2.3 billion more than the official estimate. Taking into account a likely $15 billion extra in stamp duty from the property and stock markets, the combined effect is probable extra revenue of $40.6 billion. With the original surplus estimated at $31.7 billion, the extra revenue will push the real figure to more than $70 billion. Liberal Party provisional legislator Ronald Arculli said: 'The coffers are flooded.'