Powers of the Commissioner on Internal Revenue

1. To interpret tax laws and decide tax cases;

2. To obtain information, and to summon, examine and take testimony of persons;

3. To make assessments and prescribe additional requirements for tax administration and enforcement;

4. To conduct inventory - taking, surveillance and to prescribe presumptive gross sales and receipts;

5. To terminate taxable period;

6. To prescribe real property values;

7. To inquire into bank deposit accounts;

8. To accredit and register tax agents;

9. To prescribe additional procedural or documentary requirements; and

10. To delegate power to subordinates. (Sec. 4 to 8, NIRC)