interestCostList.forEach( item => {
if ( item.classList.contains( 'interest-cost-primary' ) ) {
rate = rateCompare1Dom.value.replace( '%', '' );
} else {
rate = rateCompare2Dom.value.replace( '%', '' );
}
const length = parseInt( $( item ).parents( '.rc-comparison-section' ).find( '.loan-years' ).text(), 10 ) * 12;
const amortizedVal = amortize( { amount: params.getVal( 'loan-amount' ), rate: rate, totalTerm: fullTerm, amortizeTerm: length } );
const totalInterest = amortizedVal.interest;
const roundedInterest = Math.round( unFormatUSD( totalInterest ) );
const $el = $( item ).find( '.new-cost' );
$el.text( formatUSD( roundedInterest, { decimalPlaces: 0 } ) );
// Add short term rates, interest, and term to the shortTermVal array.
if ( length < 180 ) {
shortTermVal.push( {
rate: parseFloat( rate ),
interest: parseFloat( totalInterest ),
term: length / 12
} );
renderInterestSummary( shortTermVal, 'short' );
} else {
longTermVal.push( {
rate: parseFloat( rate ),
interest: parseFloat( totalInterest ),
term: length / 12
} );
renderInterestSummary( longTermVal, 'long' );
}
} );
source: function() {
return amortize({
amount: positive( loan['amount-borrowed'] ),
rate: loan['interest-rate'],
totalTerm: loan['loan-term'] * 12,
amortizeTerm: 60 // @todo loan term * 12?
}).payment;
}
mortgage['monthly-principal-interest'] = function (loan) {
return Math.round(amortize({
amount: positive(loan['loan-amount']),
rate: loan['interest-rate'],
totalTerm: loan['loan-term'] * 12,
// since we are starting a new loan,
// amortizeTerm is 0, since we haven't make
// any payment yet
amortizeTerm: 0
}).payment);
};
$('.interest-cost').each(function( index ) {
var rate = $(this).siblings().find('.rate-compare').val().replace('%', ''),
length = (parseInt($(this).find('.loan-years').text(), 10)) * 12,
amortizedVal = amortize({amount: params['loan-amount'], rate: rate, totalTerm: fullTerm, amortizeTerm: length}),
totalInterest = amortizedVal['interest'],
roundedInterest = Math.round( unFormatUSD(totalInterest) ),
$el = $(this).find('.new-cost');
$el.text( formatUSD(roundedInterest, {decimalPlaces: 0}) );
// add short term rates, interest, and term to the shortTermVal array
if (length < 180) {
shortTermVal.push({rate: parseFloat(rate), interest: parseFloat(totalInterest), term: length/12});
}
});
$('.interest-cost').each(function( index ) {
if ( $(this).hasClass('interest-cost-primary') ) {
rate = $('#rate-compare-1').val().replace('%', '');
} else {
rate = $('#rate-compare-2').val().replace('%', '');
}
var length = ( parseInt($(this).parents('.rc-comparison-section').find('.loan-years').text(), 10) ) * 12,
amortizedVal = amortize( {amount: params['loan-amount'], rate: rate, totalTerm: fullTerm, amortizeTerm: length} ),
totalInterest = amortizedVal['interest'],
roundedInterest = Math.round( unFormatUSD(totalInterest) ),
$el = $(this).find('.new-cost');
$el.text( formatUSD(roundedInterest, {decimalPlaces: 0}) );
// add short term rates, interest, and term to the shortTermVal array
if (length < 180) {
shortTermVal.push( {rate: parseFloat(rate), interest: parseFloat(totalInterest), term: length/12} );
renderInterestSummary(shortTermVal, 'short');
} else {
longTermVal.push( {rate: parseFloat(rate), interest: parseFloat(totalInterest), term: length/12} );
renderInterestSummary(longTermVal, 'long');
}
});
$scope.update = function(loan) {
$scope.master = amortize(angular.copy(loan));
};
evaluateCashFlow: function(data, price) {
if (!price) { price = data.zestimate; }
var rent = data.rentzestimate;
var mortgageInfo = amortize({
amount: price,
rate: 4.625,
totalTerm: 360,
amortizeTerm: 12
});
var mortgage = Math.round(mortgageInfo.paymentRound);
var taxes = Math.round(data.taxAssessment * 0.02 / 12);
var insurance = Math.round(0.0004 * data.taxAssessment);
var management = Math.round(1.7/12 * rent);
var repairs = Math.round(0.1 * rent);
var capEx = Math.round(200);
var vacancy = Math.round(rent / 13);
var totalCosts = mortgage + taxes + insurance + management + repairs + capEx + vacancy;
var profit = rent - totalCosts;
// returns include equity, appreciation, profit
var returns = mortgageInfo.principalRound / 12 +
profit +
(data.taxAssessment * .02 / 12);
var investment = price * 0.2;
return {
revenue: rent,
expenses: totalCosts,
profit: profit,
returns: returns,
investment: investment,
expenseList: {
mortgage: mortgage,
taxes: taxes,
insurance: insurance,
management: management,
repairs: repairs,
capEx: capEx,
vacancy: vacancy
},
ROI: {
cacROI: profit * 12 / investment,
ROI: returns / investment
},
assumptions: [
"Vacancy rate is 7.7%",
"Tax rate is 2.0%",
"20% down payment",
"4.625% interest rate",
"capEx is $200/month",
"repairs are 10% of monthly rent",
"property management is 50% first month's rent + 10%/month",
"insurance is roughly 0.0004 * tax assessment"
]
};
/*
Revenue:
- Rent: rentZestimate
Expenses:
- Mortgage: calculation, need price
- Taxes: Taxable value (zillow), tax rate?
- Insurance: Guess .0004 * taxable value
- HOA: Guess? zillow?
- Property Management: 50% 1st month + 10%
- Repair: % of rent
- CapEx: 200-ish
*/
return true;
}