Salary Overpayment: How Can I Recover the Lost Tax from HR's Mistake?

I had a component in my salary that was being paid for a few months. Due to a change in the project, this component was supposed to be removed, but I continued to receive payment for one more year. The HR department realized this mistake after two years, and now the excess amount that was paid is being deducted from my salary post-tax. As a result, I am incurring a loss on the tax that I had already paid. I have no issue with the deduction itself, but I am concerned about the tax amount that I have lost. I informed HR that it was their mistake, which has led to me losing the tax that I paid. Please advise.

Thank you for your help.

From your post, I understand that you enjoyed unqualified remuneration. Now, you are troubled by the deduction of the excess amount paid and enjoyed by you. You also mention that you had paid tax on the unqualified amount. Now, you are only losing the tax component. Isn't it?

Your location is mentioned as the US. I am not aware of the US taxation procedure. If you are Indian, it would be better to consult with a CA who can guide you for a refund while filing the returns.

Regards,
Pon