China will require an advanced payment of tax on homeowners' gains before any completion of home sale starting Aug 1, Forbes reported, citing the Shanghai Securities Journal. The State Administration of Taxation announced amendments to the current regulations that homeowners report gains from the sale of a dwelling are premitted to pay tax after the tarnsaction. The tax bureau said in a statemnet on its website that the gains tax is bewteen one and three percent on the sale of existing dwelling. Premier Wen Jiabao pledged at a State Council meeting yesterday to step up controls over te property market and curb excessive price increase inc ertain cities, Forbes wrote.