Employee welfare deductions cover provident fund, pension, gratuity and timely credited employee contributions, with strict exclusion for other funds. Employer deductions are allowed for specified employee welfare contributions, including recognised provident fund, approved superannuation fund, pension scheme, approved gratuity fund, and certain employee contributions credited by the return-filing due date. No deduction is allowed for gratuity provision outside the permitted gratuity rules, and no further deduction is available when payment is made from an already allowed gratuity provision. Contributions to other funds or institutions are not deductible unless specifically covered or required by law.