Request to bank for extension of time

Our next payment will be due on [date]. Due to an
unexpected emergency that has occurred, we will be
unable to make this payment by the [date] due date.
We are requesting an extension of [time] to make this
payment.

If you review our file, you will find that payments have,
for the most part, been made on time. Our relationship
with your bank is very important to us, as well as my
desire to maintain a good credit rating.

Thank you very much for your consideration of this
request.

Very truly yours,