9(3) tax is payable by receipent if notified by govt.( even if supplier is registered)
9(4) tax is payable by receipent if supplier is unrgistered and receiver in registered
17(2) in case supllier provides exempted supply as well as taxable supply, ITC attributable to taxable supply is only eligible for credit.
17(3) exempt supply includes supply made on which recepient ia liable for tax under RCM.
us 9(3) supplier may be registered person. but supply may be taxable in the hand of recepient. in that case itc will not be availavle to supplier on input used in such supply.
it is my view