How do I set up a payment plan with the IRS? This is one of the most common questions that I'm asked, and unfortunately, it's not a very simple question to answer. I'm attorney Darren Mishit, and I've been representing clients before the IRS since 1999. When you want to set up a payment plan with the IRS, which is also known as an installment agreement, one of the big factors in determining the size of your payment is the amount that you owe to the IRS. If you owe $50,000 or less and can pay equal monthly installments over 72 months, you might be in really good shape. Assuming you can't readily pay them back from a liquid asset like cash in your bank account, they'll likely grant you an installment agreement. Assuming you owe less than $50,000 and can full pay it within 72 months, in this example, that payment would likely be around $700 to $750 per month. Penalties and interest continue to accrue, so it could be quite some time before you see much movement in the principle if you enter into such an installment agreement. Second, if you owe more than $50,000, the IRS is going to want to look at your monthly income and monthly allowable expenses. The difference between your monthly income and monthly allowable expenses is called your monthly disposable income. The IRS looks at your monthly disposable income, and that's what they want you to pay on a monthly basis for your installment agreement. This may not sound like a problem, but the monthly allowable expenses that they actually allow are draconian in nature and don't really reflect reality at all. So for example, you may actually pay $2,500 per month in rent, but the IRS monthly allowable amount for your county might...