tmval.olb_r

tmval.annuity.olb_r(loan: float, q: float, period: float, gr: Union[tmval.growth.Accumulation, float, tmval.rate.Rate], t) → float[source]

Calculates the outstanding loan balance using the retrospective method.

Parameters

  • loan (float) – The loan amount.

  • q (float) – The payment amount.

  • period (float) – The payment period.

  • gr (Accumulation, float, or Rate) – A growth rate object.

  • t (float) – The valuation time.

Returns

The outstanding loan balance.

Return type

float