kaurikk/loan-payment-calculator

Loan payment calculation library

, _(*1)

loan-payment-calculator

Library to calculate full loan payments (with dates, periods, principal and interest amounts)., _(*2)

Basic usage

// $paymentAmountCalculator is instance of PaymentAmountCalculatorInterface
// $interestAmountCalculator is instance of InterestAmountCalculatorInterface
$calculator = new PaymentsCalculator($paymentAmountCalculator, $interestAmountCalculator);

$periods = $paymentPeriods; // must be instance of PaymentPeriodsInterface
$principal = 2000;
$interestRate = 20;
$calculationMode = 1; // see PaymentPeriodsInterface for available modes
$futureValue = 0; // Expected value after loan end, usually 0 

$payments = $calculator->calculatePayments($periods, $principal, $interestRate, $calculationMode, $futureValue);