Rolling late payment

When you miss a mortgage payment by thirty days and do not make it up the next month by making a double payment you will have a rolling 30 day late payment showing on your mortgage payment history.

When qualifying for an Alt-A or subprime mortgage, most lenders will allow up to six rolling 30 day late payments to only count as a 1X30(one 30 day late). This is for loan qualifying purposes only, keep in mind that having a series of rolling late payments will also have a very detrimental impact on your credit score

Most lenders will allow Rolling 30 day lates. However some don't.