c) The following data is relevant to Naab Ltd tax affairs for 2018 year of assessment:

Self-assessment returns submitted:

Tax paid on self-assessment: GH¢1,000,000
Chargeable income: GH¢4,000,000
Actual Returns submitted:

Chargeable Income: GH¢6,000,000
Correct amount – Tax payable: GH¢1,500,000

Required:
What is the amount of tax underpayment to be subject to interest computation?
(2 marks)