Explain fully the effect of the use of debt capital on the weighted average cost of capital of a company.

CPA-Financial-Management-Section-3 Revision kit

At initial stages of debt capital the WACC will be declining upto a point where the WACC will be minimal. This is because.
(i) Debt capital provides tax shield to the firm and after tax cost of debt is low.
(ii) The cost of debt is naturally low because it is contractually fixed and certain.

Beyond the optimal gearing level, WACC will start increasing as cost of debt increases due to high financial risk.

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