<prompt> Human: It all started off because I was e-filing and couldnt find my previous years adjusted gross incomerequired to submit the e-file, so I put them off. Then I was dealing with depression, social anxiety, and other medical issues for quite a while and simply didnt file them. Now, 5 years later, Id like to hopefully catch up and become a normal citizen again.Some details: I was making between 100k-230k per year over those 5 years. Almost all of my income came from a salary, I have some long term stock holdings but I am still holding them. I am a single individual with no dependents. The last time I filed my taxes, I received approximately 3k as a tax return, and nothing much has changed in my filing since that timethis was part of my messed up mental process for not filing - that since the IRS owed me money, I didnt need to bother.Can anyone tell me how I should go about rectifying this situation, and what any possible repercussions are?  <response>: IRS employee here:I assume the last federal return you filed was for tax year 2008, and you have not filed for 2009 - 2013.I recommend you visit your local Taxpayer Assistance Center TAC and obtain transcripts of your wage and income documents for the years you have not filed, and an account transcript for the last year you did file.Assuming you havent received any notices asking you to file any of the five federal returns from 2009 - 2013, your thought process may have been correct: our Very Old Computer ran the numbers with your income for each year, computed the maximum possible tax liability, and determined you would have owed little to no tax after applying your federal withholding.If you are due a refund on all five returns, there will be no penalties assessed for filing late. You will, however, have passed the statutory timeframes for claiming refunds on 2009 and 2010.I recommend you prioritize the 2011 return, as this refund statutory deadline elapses on 4152015. Then prepare and file 2012 and 2013, and then back to 2009 and 2010. Please be sure each return is complete and correct, and each return has your current address. Attach your Forms W-2 or the transcripts to the returns.Sign and date the returns.All returns will need to be mailed, and I strongly recommend you mail them separately, or revisit your local TAC and bring them in.After the Service receives the 2011 - 2013 returns, you should expect to receive the refund checks after about 8 to 10 weeks.After you file the 2009 and 2010 returns, you should expect to receive letters denying the refund claims after about 12 - 16 weeks. These letters will contain your appeals rights for the refunds. If you can establish you were financially disabled during these years, you may be able to pursue the appeal and claim the refunds.If the timeframes above elapse, and you dont receive the refunds or the correspondence, I recommend you contact IRS customer service at 1-800-829-1040 M - F 7am - 7pm and speak with a representative. They will ask some verification questions and research the status of your claims.If you identify a balance due on any return, prioritize and file it as soon as possible. Then file the refund returns for any of the 2011 - 2013 tax years, and the overpayments will be applied to the balance due. There will be significant assessments of interest, the Failure To File FTF penalty, and the Failure To Pay FTP penalty on any tax year with a balance due.Thank you for reading. 