As per Lawkidunya, Section 155 of the Income Tax Ordinance, 2001 in Pakistan provides exemptions from income tax for certain types of income. Here are some key exemptions:

Exemptions Under Section 155

1. Education expenses: Expenditure incurred on education of children, up to Rs. 60,000 per child per annum.
2. Medical expenses: Medical expenses incurred on treatment of self or dependents, up to Rs. 50,000 per annum.
3. Donations to charitable institutions: Donations made to charitable institutions, up to 30% of taxable income.
4. Investments in National Savings Schemes: Investments made in National Savings Schemes, such as National Savings Certificates and Defense Savings Certificates.
5. Income from agricultural land: Income from agricultural land, up to Rs. 150,000 per annum.
6. Income from shares: Dividend income from shares of Pakistani companies, up to Rs. 100,000 per annum.
7. Interest income from savings accounts: Interest income from savings accounts, up to Rs. 50,000 per annum.

Conditions For Claiming Exemptions

1. Taxpayer must be a resident: The taxpayer must be a resident of Pakistan to claim exemptions.
2. Expenditures must be incurred: The taxpayer must have actually incurred the expenditures to claim exemptions.
3. Expenditures must be supported by documentation: The taxpayer must have documentation to support the expenditures, such as receipts and invoices.
4. Exemptions must be claimed in tax return: The taxpayer must claim exemptions in their income tax return (Form A) for the relevant tax year.

Penalties For Non-compliance

1. Late filing fee: A penalty of Rs. 20,000 to Rs. 50,000 for late filing of tax return.
2. Default surcharge: A penalty of up to 25% of the tax due for non-payment or underpayment of tax.
3. Prosecution: Taxpayers may be prosecuted for tax evasion or non-compliance with tax laws.

It is essential to consult with a tax professional or the Federal Board of Revenue (FBR) to ensure compliance with tax laws and regulations in Pakistan and to optimize tax efficiency.