protected override void OnInitialMonth()
{
_homeValue = Simulation.HomePurchaseAmount;
Report.AddNote(WriteLine($"* {_homeValue:C0} home value"));
_loanBalance = Simulation.OwnerLoanAmount;
Report.AddNote(WriteLine($"* {_loanBalance:C0} loan amount"));
_insurancePerMonth = Simulation.InsurancePerMonth;
_hoaPerMonth = Simulation.HoaPerMonth;
InitialCash += Simulation.OwnerDownPayment;
Report.AddNote(WriteLine($"* {Simulation.OwnerDownPayment:C0} down payment"));
var buyerFixedCosts = Simulation.BuyerFixedCosts;
WriteLine($"* {Simulation.BuyerFixedCosts:C0} buyer fixed costs");
var buyerVariableCosts = Simulation.OwnerLoanAmount * Simulation.BuyerVariableCostsPercentage;
WriteLine($"* {buyerVariableCosts:C0} buyer variable costs of {Simulation.BuyerVariableCostsPercentage:P2}");
var buyerCosts = buyerFixedCosts + buyerVariableCosts;
InitialCash += buyerCosts;
Report.AddNote(WriteLine($"* {buyerCosts:C0} total buyer costs"));
Report.AddNote(WriteLine($"* {InitialCash:C0} starting cash"));
Report.DiscountRatePerYear = Simulation.DiscountRatePerYear;
WriteLine($"* {Report.DiscountRatePerYear:P2} annual discount rate; {Financial.ConvertDiscountRateYearToMonth(Report.DiscountRatePerYear):P6} monthly discount rate");
Report.Add(new OwnerData
{
CashFlow = -InitialCash,
LoanBalance = _loanBalance,
HomeValue = _homeValue,
});
}
protected override void OnInitialMonth()
{
_insurancePerMonth = Simulation.RentersInsurancePerMonth;
_rentPerMonth = Simulation.RentPerMonth;
Report.AddNote(WriteLine($"* {_rentPerMonth:C0} initial rent"));
InitialCash =
Simulation.OwnerDownPayment +
Simulation.BuyerFixedCosts +
Simulation.OwnerLoanAmount *
Simulation.BuyerVariableCostsPercentage;
Report.AddNote(WriteLine($"* {InitialCash:C0} starting cash"));
VerboseLine($" * {Simulation.OwnerDownPayment:C0} down payment");
VerboseLine($" * {Simulation.BuyerFixedCosts:C0} fixed closing costs");
VerboseLine($" * {Simulation.OwnerLoanAmount * Simulation.BuyerVariableCostsPercentage:C0} variable closing costs");
_securityDeposit = (Simulation.RentSecurityDepositMonths * Simulation.RentPerMonth).ToDollars();
Report.AddNote(WriteLine($"* {_securityDeposit:C0} security deposit"));
_invested = Math.Max(0, InitialCash - _securityDeposit);
_basis = _invested;
Report.AddNote(WriteLine($"* {_invested:C0} invested @ {Simulation.DiscountRatePerYear:P2}"));
Report.DiscountRatePerYear = Simulation.DiscountRatePerYear;
WriteLine($"* {Report.DiscountRatePerYear:P2} annual discount rate; {Financial.ConvertDiscountRateYearToMonth(Report.DiscountRatePerYear):P6} monthly discount rate");
Report.Add(new RenterData
{
CashFlow = -InitialCash,
});
}
protected override void OnInitialMonth()
{
_homeValue = Simulation.HomePurchaseAmount;
Report.AddNote(WriteLine($"* {_homeValue:C0} home value"));
_loanBalance = Simulation.LandlordLoanAmount;
Report.AddNote(WriteLine($"* {_loanBalance:C0} loan amount"));
_insurancePerMonth = Simulation.InsurancePerMonth;
_hoaPerMonth = Simulation.HoaPerMonth;
InitialCash += Simulation.LandlordDownPayment;
Report.AddNote(WriteLine($"* {Simulation.LandlordDownPayment:C0} down payment"));
var buyerFixedCosts = Simulation.BuyerFixedCosts;
WriteLine($"* {Simulation.BuyerFixedCosts:C0} buyer fixed costs");
var buyerVariableCosts = Simulation.LandlordLoanAmount * Simulation.BuyerVariableCostsPercentage;
WriteLine($"* {buyerVariableCosts:C0} buyer variable costs of {Simulation.BuyerVariableCostsPercentage:P2}");
var buyerCosts = buyerFixedCosts + buyerVariableCosts;
InitialCash += buyerCosts;
Report.AddNote(WriteLine($"* {buyerCosts:C0} total buyer costs"));
_basis = Simulation.HomePurchaseAmount + buyerCosts;
Report.AddNote(WriteLine($"* {_basis:C0} home value basis"));
_securityDeposit = (Simulation.RentSecurityDepositMonths * Simulation.RentPerMonth).ToDollars();
InitialCash -= _securityDeposit;
Report.AddNote(WriteLine($"* {_securityDeposit:C0} security deposit received"));
Report.AddNote(WriteLine($"* {InitialCash:C0} starting cash"));
_rentPerMonth = Simulation.RentPerMonth;
Report.AddNote(WriteLine($"* {_rentPerMonth:C0} initial rent"));
Report.DiscountRatePerYear = Simulation.DiscountRatePerYear;
WriteLine($"* {Report.DiscountRatePerYear:P2} annual discount rate; {Financial.ConvertDiscountRateYearToMonth(Report.DiscountRatePerYear):P6} monthly discount rate");
Report.Add(new LandlordData
{
CashFlow = -InitialCash,
LoanBalance = _loanBalance,
HomeValue = _homeValue,
});
}
public void Calculate(ReportGrouping grouping, double discountRatePerYear)
{
// The underlying data is always monthly
var discountRate = grouping == ReportGrouping.Yearly ? discountRatePerYear : Financial.ConvertDiscountRateYearToMonth(discountRatePerYear);
if (CalculateNpv)
{
Npv = (decimal)Financials.Npv.Calculate(_cashFlows, discountRate);
}
if (CalculateIrr)
{
var irr = Financials.Irr.Calculate(_cashFlows, discountRate);
Irr = double.IsNaN(irr) ? 0m : (decimal)irr;
}
// If we ask for yearly, convert the resulting IRR
if (grouping == ReportGrouping.Monthly)
{
Irr = Financial.ConvertDiscountRateMonthToYear(Irr);
}
}
