reverse charge payment of GTA SERVICES

CHETAN JANGID (95 Points)

20 March 2018  
Sir.... I have taken GTA services in whole f. Y. 17-18. but not pay any tax under reverse charge..... But in March 2018 I want to pay whole tax under reverse charge... Of GTA service.
Can I do that.... N should I liable for interest on tax under reverse charge. And how much.?