At interbank foreign exchange, rupee opened at 69.45 a dollar and gained to touch a high of 69.37.
Mumbai: The rupee surrendered all its early gains and closed 36 paise lower at 70.02 against the US dollar on Thursday after investors looked past the euphoria over BJP's election victory and shifted focus to macro-economic developments that will set the tone for the forex market going ahead.
As the general election is over with the Narendra Modi's Bharatiya Janata Party's resounding victory, a host of domestic and global factors like crude oil prices, trade tussle between the US and China and the upcoming RBI monetary policy will mainly influence the forex market movements, according to analysts.
The Modi-led National Democratic Alliance (NDA) is all set to form the government at the Centre for a second consecutive term after having swept the Lok Sabha polls.
At the interbank foreign exchange (forex), the domestic currency opened at 69.45 a dollar and gained further strength to touch a high of 69.37 during the day.
The domestic currency, however, could not hold on to the gains and settled at 70.02 per dollar, down 36 paise over its previous close.
The rupee had settled at 69.66 against the US dollar Wednesday.
On May 16, 2014 -- the day when the 16th Lok Sabha election results were announced -- the rupee traded around 58.74 against USD.
In line with weaker rupee on Thursday, the benchmark BSE Sensex erased early gains to end 299 points lower as investors booked profits after stocks soared to record highs.
During the day, the Sensex hit the 40,000 mark while the Nifty crossed the 12,000-level for the first-time ever.
"Rupee started at two week's high of 69.50 against American dollar, but erased gains to trade at 70.04 with the loss of 37 paise or 0.52 per cent. Now, the focus will shift to crude oil, trade war and RBI monetary policy," said V K Sharma, Head PCG & Capital Markets Strategy, HDFC Securities.
Meanwhile, government bonds rose, leading to 0.33 per cent drop in yield to 7.24 per cent.
Foreign institutional investors (FIIs) were net buyers in the capital markets, buying shares worth 1,352.20 crore on Thursday, according to exchange data.
The dollar index, which gauges the greenback's strength against a basket of six currencies, rose 0.16 per cent to 98.19.
Brent crude futures, the global oil benchmark, eased 1.65 per cent to trade at USD 69.82 per barrel.
The Financial Benchmark India Private Ltd (FBIL) set the reference rate for the rupee/dollar at 69.7655 and for rupee/euro at 77.8123. The reference rate for rupee/British pound was fixed at 88.5915 and for rupee/100 Japanese yen at 63.17.