late payments

late payments

So I was wondering about bills and late payments. There has been a couple of times where my bills were a little late, or I forgot to pay a utility bill one month and wondered why my bill had doubled the next month. Soon, I'm going to have to start looking and applying for new apartments. Right now my credit is okay(a medical bill and one charge that should not be there and is in dispute), and my rental history is good(no late payments). I have been late on a couple bills, that's pretty much it. My question is, some companies will look at your billing history to see how well you keep up with payments. What counts as a late payment? Is it a payment that is a month late, or is it a late payment when the account is considered delinquent, like if it hasn't been paid in months? I'm not sure what 'late' payments get recorded.
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