$$ x_{months} = x_{days} \times \frac{1 \text{ month}}{30 \text{ days}} $$

$$ \begin{align} \frac{\text{Return \%}}{x_{days}} &= \frac{\text{Credit Received}}{\text{BP Eff}} \times 100\% \\

\frac{\text{Return \%}}{x_{month}} &= \frac{\frac{\text{Return \%}}{x_{days}}}{x_{months}} \end{align} $$

Example

• $266cr
• 3274 BP Eff
• 80 DTE / 80 ‘days’

$$ x_{months} = 80_{DTE} \times \frac{1 \text{ month}}{30 \text{ days}} = 2.66 \text{ months} $$

$$ \frac{\text{Return \%}}{80_{DTE}} = \frac{\$266}{3274} \times 100\% = 8.12\% $$

$$ \begin{align} \frac{\text{Return \%}}{\text{month}} &= \frac{\frac{\text{Return \%}}{x_{days}}}{x_{months}} \\

\frac{\text{Return \%}}{\text{month}} &= \frac{8.12\%}{2.66} = \frac{3.05\%}{\text{month}} \end{align} $$