Dear ABHISHEK K,
Excavation services will cover under SAC 995433 and rate of tax as per residual entry will be 18%.
995433 Excavating and earthmoving services
This service code includes
i. large-scale earthwork, excavation, sloping and earthmoving services involving making of embankments or cuttings, prior to highway construction (roads, motorways, railways, etc.);
ii. digging of trenches, for utilities, urban drainage, various roadworks, etc.;
iii. digging of conventional ditches for various constructions;
iv. land recreation work services;
v. contaminated top soil stripping work services;
vi. other excavating and earthmoving work services