<prompt> Human: I cannot finish filing my taxes because my previous employer went bankrupt and is out of business. There is no location to send a W2 request to, no employeeemployer to contact. How can I file my taxes and calculate my tax withholding?  <response>: That the business is out of business does not relieve them from their reporting requirements. Attempt to contact them at their last known address to confirm they are providing your W-2.After February 14, if you havent received a complete and correct Form W-2 from the employer, you can request that an IRS representative initiate a Form W-2 complaint. Call the IRS toll free at 800-829-1040 M - F 7am - 7pm local time, or make an appointment to visit an IRS Taxpayer Assistance Center TAC in person.A letter will be sent to the employer requesting that they furnish your Form W-2 within ten days. The letter advises the employer of their responsibilities to provide a correct Form W-2 and of the penalties for failure to do so.You will be sent a letter that provides instructions and Form 4852, Substitute for Form W-2, Wage and Tax Statement, or Form 1099-R, Distributions from Pensions, Annuities, Retirement or Profit-Sharing Plans, IRAs, Insurance Contracts, etc The Form 4852 may be used in the event that the employer does not provide you with the corrected Form W-2 in time to file your tax return.When you call the IRS or visit an IRS Taxpayer Assistance Center TAC, please have the following information available: Your employers name and complete address, including ZIP code, employer identification number if known - see prior years Form W-2 if you worked for the same employer, and telephone number, Your name, address, including ZIP code, social security number, and telephone number; and An estimate of the wages you earned, the federal income tax withheld, and the period you worked for that employer. The estimate should be based on year-to-date information from your final pay stub or leave-and-earnings statement, if possible.If you file your return and attach the Form 4852 to support the withholding amount claimed instead of a Form W-2, your refund can be delayed while the information you gave us is verified.If you receive a corrected Form W-2 after you file your return and it does not agree with the income or withheld tax you reported on your return, file an amended return on Form 1040X PDF, Amended U.S. Individual Income Tax Return. 