Effective interest rate

Hi,

My customer needs to calculate effective interest rate.
Using the sliderfunction you have on the demo where you fill in “Loan Amount”, “Payback time” and get the montly cost.

But we also have Effective interest that need to be calculated into all of this.
Not just the standard rate.

The formula is:
//a = amount, y = years, i = interest return function calcInterest(a, y, r) { var numberFilter = $filter(“number”); var i = (r / 12) / 100; //Terminrente return numberFilter(a * (Math.pow((1 + i), y * 12) * i / ((Math.pow((1 + i), y * 12)) – 1)), 0); };

Is this possible for you guys to implement? Can buy the pro version ofcourse!

Best regards,
Joakim