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The Grey Zone

The cost of capital of a mid-sized private company, and why it cannot be measured

The thesis

Cost of capital models were built for companies listed in deep markets. Applying them to a Brazilian private company requires assumptions that no textbook resolves, and every assumption moves the value

What the study establishes

1

The size premium and the illiquidity premium have no published Brazilian benchmark

2

The defensible range for the cost of capital in the middle market is wide enough to double the value

3

Whoever chooses the assumption chooses the outcome, which is why the assumption must be negotiated, not arbitrated

Download the study 24-page PDF, 2026 edition · in Portuguese

Contents