Hi,
You can change the content to:
Name of the employee
Company name
Sub: Increment Letter
Dear Mr./Ms. [Last Name],
We congratulate you for your hard work, enthusiasm, dedication, and continuous effort in meeting the organization's objectives. Upon reviewing your performance for the year [year], we are pleased to announce an increment of Rs. [amount] (Rupees [amount in words]) on your existing salary of Rs. [amount] with effect from [date].
We expect you to maintain this level of performance in the upcoming years and to grow along with the organization. Please sign and return the duplicate copy as a token of your acceptance for your records.
Wishing you all the best.
Regards,
Suriya