I was looking for a 2nd Opinion on some past tax years. I went through a divorce recently and my ex wife has not come up with information I need to file taxes in 2011 and 2012. I have filed all other years. With that being my accountant recently did a return for both years and came up with a rough figure of what I would owe. I have already been hit with the 25% late payment penalty but still am accruing interest on the amount owed. I want to just send them some money for those 2 years based on that calculation just to stop the interest from continue to pile up. When we file it will be a less number because there are items that will drastically reduce the amount owed.

Could I just send the IRS a check and peg it for certain years?

Thanks for any suggestions.