"""Present values of cashflows
This Space is a child Space of :mod:`~ifrs17sim.model.OuterProj.InnerProj`,
and calculates present values of cashflows.
This Space is parameterized with ``t_rate``, which indicates that
the discount rates at time ``t_rate`` are used for discounting.
.. blockdiag::
blockdiag {
default_node_color="#D5E8D4";
default_linecolor="#628E47";
ifrs17sim [shape=roundedbox, linecolor="#7B99C5", color="#D4E8FC", width=96]
ifrs17sim <- "OuterProj\\n[PolicyID, ScenID=1]" <- "InnerProj[t0]" [hstyle=composition];
"OuterProj\\n[PolicyID, ScenID=1]" [stacked];
"InnerProj[t0]" [stacked];
"PV[t_rate]" [stacked];
"InnerProj[t0]" <- "PV[t_rate]" [hstyle=composition]
}
"""
from modelx.serialize.jsonvalues import *
def _formula(t_rate):
refs = {'last_t': _space.parent.last_t,
'InsurIF_Beg1': _space.parent.InsurIF_Beg1,
'InsurIF_End': _space.parent.InsurIF_End,
'PremIncome': _space.parent.PremIncome,
'BenefitSurr': _space.parent.BenefitSurr,
'BenefitDeath': _space.parent.BenefitDeath,
'BenefitTotal': _space.parent.BenefitTotal,
'ExpsCommTotal': _space.parent.ExpsCommTotal,
'ExpsAcq': _space.parent.ExpsAcq,
'ExpsMaint': _space.parent.ExpsMaint,
'ExpsTotal': _space.parent.ExpsTotal,
'DiscRate': _space.parent.parent[t_rate].DiscRate}
return {'refs': refs}
_bases = []
_allow_none = None
_spaces = []
# ---------------------------------------------------------------------------
# Cells
[docs]def InterestNetCF(t):
"""Interest accreted on pv of net cashflows"""
if t > last_t:
return 0
else:
return (PV_NetCashflow(t)
- PremIncome(t)
+ ExpsTotal(t)) * DiscRate(t)
[docs]def PV_BenefitDeath(t):
"""Present value of death benefits"""
if t > last_t:
return 0
else:
return (-BenefitDeath(t) + PV_BenefitDeath(t+1)) / (1 + DiscRate(t))
[docs]def PV_BenefitMat(t):
"""Present value of matuirty benefits"""
if t > last_t:
return 0
else:
return (-BenefitMat(t) + PV_BenefitMat(t+1)) / (1 + DiscRate(t))
[docs]def PV_BenefitSurr(t):
"""Present value of surrender benefits"""
if t > last_t:
return 0
else:
return (-BenefitSurr(t) + PV_BenefitSurr(t+1)) / (1 + DiscRate(t))
[docs]def PV_BenefitTotal(t):
"""Present value of total benefits"""
if t > last_t:
return 0
else:
return (-BenefitTotal(t) + PV_BenefitTotal(t+1)) / (1 + DiscRate(t))
def PV_Check(t):
return PV_NetCashflow(t) - PV_NetCashflowForCheck(t)
[docs]def PV_ExpsAcq(t):
"""Present value of acquisition expenses"""
if t > last_t:
return 0
else:
return - ExpsAcq(t) + PV_ExpsAcq(t+1) / (1 + DiscRate(t))
[docs]def PV_ExpsCommTotal(t):
"""Present value of commission expenses"""
if t > last_t:
return 0
else:
return - ExpsCommTotal(t) + PV_ExpsCommTotal(t+1) / (1 + DiscRate(t))
[docs]def PV_ExpsMaint(t):
"""Present value of maintenance expenses"""
if t > last_t:
return 0
else:
return - ExpsMaint(t) + PV_ExpsMaint(t+1) / (1 + DiscRate(t))
[docs]def PV_ExpsTotal(t):
"""Present value of total expenses"""
if t > last_t:
return 0
else:
return - ExpsTotal(t) + PV_ExpsTotal(t+1) / (1 + DiscRate(t))
[docs]def PV_NetCashflow(t):
"""Present value of net cashflow"""
return (PV_PremIncome(t)
+ PV_ExpsTotal(t)
+ PV_BenefitTotal(t))
[docs]def PV_NetCashflowForCheck(t):
"""Present value of net cashflow"""
if t > last_t:
return 0
else:
return (PremIncome(t)
- ExpsTotal(t)
- BenefitTotal(t) / (1 + DiscRate(t))
+ PV_NetCashflow(t+1) / (1 + DiscRate(t)))
[docs]def PV_PremIncome(t):
"""Present value of premium income"""
if t > last_t:
return 0
else:
return PremIncome(t) + PV_PremIncome(t+1) / (1 + DiscRate(t))
[docs]def PV_SumInsurIF(t):
"""Present value of insurance in-force"""
if t > last_t:
return 0
else:
return InsurIF_Beg1(t) + PV_SumInsurIF(t+1) / (1 + DiscRate(t))
# ---------------------------------------------------------------------------
# References
scen = ("Interface", ("....", "Economic"), "auto")