A design demonstration. Ropewalk is not a real lender.

(401) 555-0137
RopewalkMortgage Co.

Where does each payment actually go?

Amortisation schedule

Where each payment actually goes. The early ones are almost all interest, and the month that stops being true is further out than most people expect.

Principal and interest only. Taxes, insurance and mortgage insurance are on the monthly payment calculator, because they are not part of what amortises.

Your inputs

Anything here shortens the schedule below. The extra-payment calculator goes further.

Your result

Scheduled payment

$2,401.86

The whole term

Paid off in30 years
Interest$484,668
Total paid$864,668

The first payment

Goes to interest$2,058.33
Goes to principal$343.53
Principal overtakes interestPayment 233
Half the balance gone—

Because of the extra

Interest avoided—
Time removed—
Balance and interest
Interest against principal, payment by payment

The crossing point is the whole story of a long mortgage.

The schedule

Every payment, paginated twelve at a time, with the running interest total. The year view sums each twelve.

Every payment, paginated twelve at a time, with the running interest total. The year view sums each twelve.
MonthPaymentInterestPrincipalInsuranceBalanceInterest to date

Take this with you

Every number you entered is in the address bar. Copy the link and it opens with your inputs restored — that is how everything else here shares.

Nothing is sent from this site. This is a demonstration: when you press the button it builds a message you can send yourself from your own mail app, which is the only honest version of this feature here.

What this assumes

  • A fixed nominal annual rate compounded monthly, unchanged for the whole term.
  • Payments rounded to the cent, with the final payment absorbing the remainder, so the balance lands exactly on zero and the principal column sums to the loan.
  • Extra principal is applied in the same month it is paid, with no prepayment penalty.
  • No escrow, no mortgage insurance, no fees — this is the note, not the bill.

Demonstration form

Have someone look at it

If this were a working site, this is where the conversation would start.

Only used to call you back — and on this demonstration, not even that.

This form does not send anything. It validates what you type, shows you a confirmation, and stops there. Nothing is stored, nothing is transmitted, and nobody will call you. There is no consent box here because there is nothing to consent to.