The rupee's gains for the year have been wiped out due to an acute dollar shortage, caused by uncertainties surrounding the US debt ceiling and concerns over further rate increases. The cash-tom rate was at 0.1 points, indicating the dollar shortage and a global dollar shortage is expected due to the US debt ceiling talks. Traders said interventions by the Reserve Bank of India have helped the domestic currency recover, and have also helped ease some of the dollar shortage in the system.