Sec 18(1)(a) — a person who becomes liable to register and obtains registration is entitled to take ITC on:

1. Sec 18(1)(a) — a person who has applied for registration within 30 days of becoming liable can take ITC on inputs held in stock, inputs in semi-finished and finished goods, on the day immediately preceding the date from which he becomes liable to pay tax. 2. Capital goods are NOT eligible at the time of obtaining registration under Sec 18(1)(a) — they would have been excluded. 3. Voluntary registrants get a similar credit under Sec 18(1)(b), pegged to date of grant of registration. _Source: ICAI BoS CA Final Paper 8, Ch 6 "Input Tax Credit", §Sec 18(1)(a)_