Take a look at the promise to pay letter written to a company or bank when you have not paid at the exact time. The sample business letter can help you frame a promise to pay agreement template.
Sample Letter Of Promise To Pay
It is not through oversight that your bills have not been paid so far and so long. In fact, it was owing to my inability to collect my own outstanding amounting to a considerable sum of money.
I am likely to receive a payment of large sum of money within two-three days. This payment is quite assured and so reliable. Therefore, I will settle your bills within this week although I am in urgent need of money for my own personal requirements.