"The (CIL share) sale shall...Commence on January 30 and shall close on the same date at 3.30 pm," CIL said a stock exchange filing. The offer will have 20 per cent reservation for retail investors.
The floor price for the stake sale would be announced tomorrow after the close of market hours.
Shares of CIL closed at Rs 384.05, up 0.27 per cent over previous close on the BSE.
At the current market price, the sale of up to 10 per cent stake or over 63.17 crore CIL shares would fetch over Rs 24,000 crore to the exchequer.
Coal India would be second company to hit the markets under the government's disinvestment programme. In December, government sold 5 per cent stake in SAIL to garner over Rs 1,700 crore.
For the current fiscal, the government has budgeted to raise Rs 43,425 crore through disinvestment in PSUs.