India's corporate and income tax collection for the current year is likely to fall for the first time in at least two decades, over half a dozen senior tax officials told Reuters, amid a sharp fall in economic growth and cut in corporate tax rates.

Prime Minister Narendra Modi's government was targetting direct tax collection of 13.5 trillion rupees ($189 billion) for the year ending March 31 - a 17% increase over the prior fiscal year.

However, a sharp decline in demand has stung businesses, forcing companies to cut investment and jobs, denting tax collections and prompting the government to forecast 5% growth for this fiscal year - the slowest in 11 years.

The tax department had managed to collect only 7.3 trillion rupees as of Jan. 23, more than 5.5% below the amount collected by the same point last year, said a senior tax official.

After collecting taxes from companies in advance for the first three quarters, officials typically garner about 30-35% of annual direct taxes in the final three months, data from the past three years shows.

But eight senior tax officials interviewed by Reuters said despite their best efforts direct tax collections this financial year were likely to fall below the 11.5 trillion collected in 2018-19.