tmval.olb_p

tmval.annuity.olb_p(q: float, period: float, term: float, gr: Union[tmval.growth.Accumulation, float, tmval.rate.Rate], t: float, r: float = None, missed: list = None) → float[source]

Calculates the outstanding loan balance using the retrospective method.

Parameters

  • q (float) – The payment amount.

  • period (float) – The payment period.

  • term (float) – The loan term, in years.

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

  • t (float) – The valuation time, in years.

  • r (float, optional) – The final payment amount, if different from the others, defaults to None.

  • missed (list) – A list of missed payments, for example, 4th and 5th payments would be [4, 5].

Returns

The outstanding loan balance.

Return type

float