Here are the 10 documents you must keep in handy while filing your ITR for FY 2019-20:

Form-16. ...

Salary slips. ...

Interest certificates from banks and post office. ...

Form-16A/Form-16B/Form-16C. ...

Form 26AS. ...

Tax-saving investment proofs. ...

Deductions under section 80D to 80U. ...

Home loan statement from bank/NBFC.