Additional wealth-tax for understated net wealth triggers higher demand and adjustment of refunds under amended law. Amendment to section 16 limits intimations for tax or interest so none may be sent after two years from the end of the assessment year when net wealth was first assessable. A new sub section (1A) requires the Assessing Officer to impose an additional wealth tax on any excess of adjusted net wealth over declared net wealth, permit reduction of refunds by that additional tax, and adjust that additional tax if later orders increase or reduce the base amount, with notices of demand for increases and refunds for excess payments.