Reliefs the Act allows under section 30 include rent relief of 20% of annual rent paid, up to a maximum of ₦500,000, provided the individual accurately declares the rent paid; and contributions to the National Housing Fund, the National Health Insurance Scheme and under the Pension Reform Act; interest on a loan for an owner-occupied house; and life insurance or deferred annuity premiums.

Taxable income band Rate
First ₦800,000 0%
Next ₦2,200,000 15%
Next ₦9,000,000 18%
Next ₦13,000,000 21%
Next ₦25,000,000 23%
Above ₦50,000,000 25%

Source: Nigeria Tax Act 2025, section 58 and the Fourth Schedule.

These are examples of the method, not advice for your situation.