But the Reserve Bank of India’s annual report on Wednesday suggested that most holders of the old currency managed to dispose of it, estimating that banned notes worth Rs15.28tn ($239bn) were returned to the bank. That amounts to 99 per cent of the Rs15.44tn of the old high-value notes that were in circulation when Mr Modi made his announcement, according to the finance ministry. The bank’s estimate follows media reports that complex money-laundering networks sprang up in the wake of the demonetisation to help wealthy Indians deposit huge volumes of previously undeclared currency without exposing themselves to tax authorities. Such people allegedly sold the old notes, at a discount, to brokers who then dispatched low-income Indians to deposit or exchange them at banks. Cash crisis for Delhi traders Play video Many wealthy Indians turned to friends and relatives to help them funnel previously undeclared cash into the banking system, while others “advance paid” salaries for large numbers of workers.