1. Your apology letter should be to the point. You should give immediate attention to the matter because it's the question of your reputation and credit as a customer. Focus on how you can rectify the problem. Tackling the problem with a sincere apology is the best strategy.
  2. In your letter, explain the actions you have taken for the pending payment.
  3. Apologize for the delay in the payment.
  4. End on a positive note.


[Senders Name]
[Address line]
[State, ZIP Code]

[Letter Date]

[Recipients Name]
[Address line]
[State, ZIP Code]

[Subject: Normally bold, summarizes the intention of the letter] -Optional-

Dear [Recipients Name],

I am enclosing a check for the 1/3rd amount of rent that I owe to you. Due to unfortunate circumstances, I lost the job and am now on a new job hunt. Therefore, I have not been able to pay your full rent on time. I hope it has not troubled you, and I shall make it a point to be better from the next time.


[Senders Name]
[Senders Title] -Optional-

[Enclosures: number] - Optional -
cc: [Name of copy recipient] - Optional -