The mortgage prepayment calculator takes down payment, monthly hoa fees, annual homeowner insurance, home value, pmi, property tax, interest calculation method, ct1, ct2, starting from, paid on, periodic prepayment, one the day of, yearly increase in payments, g t, interest rate, other monthly costs, payment frequency, q2, q3, lump sum prepayment, loan term and one way and returns down payment in percentage, ori mortgage payoff date and total periodic payment. It is built for quick answers, for checking somebody else’s arithmetic, and for the moments when a formula book is not within reach.
What Is the Mortgage Prepayment Calculator?
The mortgage prepayment calculator takes down payment, monthly hoa fees, annual homeowner insurance, home value, pmi, property tax, interest calculation method, ct1, ct2, starting from, paid on, periodic prepayment, one the day of, yearly increase in payments, g t, interest rate, other monthly costs, payment frequency, q2, q3, lump sum prepayment, loan term and one way and turns them into down payment in percentage, ori mortgage payoff date and total periodic payment.
It is the kind of calculation you would otherwise do on the back of an envelope: mechanical, repeatable and easy to get subtly wrong without noticing.
How the Mortgage Prepayment Figure Is Built
Each result is calculated from the ones before it, so the working is fully visible. That matters when the answer is going to be quoted to somebody else and you need to be able to explain where it came from.
The figures are exactly as good as the assumptions underneath them. Check the rates, the periods and the tax treatment before you rely on the result.
Reading the Result Sensibly
A small change in an input can move the result by much more than you would expect, particularly where the calculation divides by one of the figures you supplied. That is worth understanding before you rely on a figure.
For anything that will be committed to, write the inputs down beside the result. A number you can reproduce is worth far more than one you cannot explain.
A Worked Example
Working through an example, with down payment set to 10, monthly hoa fees set to 5, annual homeowner insurance set to 2, the calculator returns eq p of 0.1487, and n of 100, and n monthly of 120. Substitute your own figures and the same steps produce the same kind of answer.
Frequently Asked Questions
What do I need to work out down payment in percentage?
Enter down payment, monthly hoa fees, annual homeowner insurance, home value, pmi, property tax, interest calculation method, ct1, ct2, starting from, paid on, periodic prepayment, one the day of, yearly increase in payments, g t, interest rate, other monthly costs, payment frequency, q2, q3, lump sum prepayment, loan term and one way. The calculator then works through the relationship and reports down payment in percentage, ori mortgage payoff date and total periodic payment.
What does the mortgage prepayment actually calculate?
It takes down payment, monthly hoa fees, annual homeowner insurance, home value, pmi, property tax, interest calculation method, ct1, ct2, starting from, paid on, periodic prepayment, one the day of, yearly increase in payments, g t, interest rate, other monthly costs, payment frequency, q2, q3, lump sum prepayment, loan term and one way and converts them into down payment in percentage, ori mortgage payoff date and total periodic payment using the standard relationship for this problem. Each step is applied in turn, so every output is traceable back to the numbers you typed in.
How should I enter down payment?
Use the value you actually have, in the unit shown next to the field. Enter every value in the same unit system. The calculator assumes the figures you supply are consistent, so it cannot correct a mistake that happens before the calculation starts.
Do I have to fill in every field?
Only the fields a particular result depends on. If you leave one blank, the results that need it simply show a note instead of a number, and everything else still works.
Does anything you type get stored?
No. The whole calculation runs inside your browser, and nothing you enter is uploaded, logged or sent anywhere.