The GDP growth is expected to be about 6.3 per cent in the current fiscal year, a tad lower than the government's estimate of 6.4 per cent, owing to several factors such as weak demand, SBI research report said on Wednesday.According to the first advance estimates (FAE) of National Income for 2024-25 released by the National Statistics Office (NSO), released on Tuesday, India's economic growth rate is estimated to slip to a four-year low of 6.4 per cent in 2024-25, because of poor showing by the manufacturing and subdued investments.