Form 1 Pendind for 2017

Satheesh Kumar R (Student) (155 Points)

23 June 2018  
My client missed to file his Form 1 return for entire year of 2017 but he filled his 3B without fail.Now I am filling his 2017 Form 1 in June 2018,but the portal does not ask any penalty but it shows the last date is 10 Jan 2018.Do we need to pay interest if yes when?...Is it compulsory to file form 1 now since he filled his Form 3B already...if I missed to file what will happen?