I am doing an OIC for a married taxpayer (he is solely liable) and I am in the process of finishing 433-A OIC. He has several expenses that do not fit in any of the categories listed and there is no place to put them on the form anywhere.
For example, he has income from the sale of his business assets. That income is being mailed already to the IRS lien unit. Additionally, he was loaned money by family to pay for my services.
What other expenses? You mention an income item and a family loan, neither are expenses. Your fees are a reduction of TP’s assets unless paid under an installment basis. For example, if you have an agreement with TP to prepare his personal tax returns for $600 a year for the next 5 years to be compliant with OIC offer, you have a $50 per month expense.