Rule – 103, Ordinary annual contributions

⁴³103. The ordinary annual contribution by the employer to a fund shall be made on a reasonable basis as may be approved by the 44[Chief Commissioner or Commissioner] having regard to the length of service of each employee concerned so, however, that such contribution shall not exceed 81/3 per cent of the salary of each employee during each year.

Reference: www.incometaxindia.gov.in