<prompt> Human: My uncle hasnt filed taxes in many years and we were running under the assumption that because he makes very little he wouldnt owe a while lot. so we started working from 2017 backwards. We went through the turbotax small business and heres the rough breakdown:He owns his own consulting firm that is barely successful.he made about 24000 from client income,his expenses for his business were about 4000.he owns a house and pays all the statelocal taxes from escrow.it seems that the big hit here is the small business tax which makes him end up owing about 2500.This seems like a high take for someone who makes very little. I know Im looking for ballpark figures here, but does this all seem in the ball park? The types of things that lower my tax rate such as my home and healthcare, didnt seem to affect his because the main tax was that small business tax. are there any things to read or look into that might help our situation.If he owes this x the years he hasnt filed, this could get very expensive very quick. hes close to retirement age and has enough credit to get social security, so we were hoping to float him until then, but this could throw a monkey wrench into that. At this rate we are debating going to a CPA in hopes he will be able to save us some money.  <response>: How many years without filing are we talking about here? Three? Five? Ten?2,500 tax on a 24,000 income is only a 10 effective tax rate, so no, that doesnt seem high at all. And if your uncle has been ducking his tax bill for a couple years hes probably looking a decent sized bill and fees. You can talk to a CPA but hell probably only be able to save you peanuts since your uncle rightfully owes the U.S. government money. 