I have not filed my income tax return (ITR). My employer has deducted full tax on my salary. My house rent allowance (HRA) has been mentioned as taxable in my Form 16, since I did not claim deductions earlier. However, now I wish to claim HRA by showing rent to my father and claim a refund. Can I do this? How should I proceed with it? Will this invite trouble since I am basically saying that Form 16 is incorrect?