It now costs $299 to file for bankruptcy under chapter 7 and $274 to file for bankruptcy under chapter 13, whetherfor one person or a married couple.  The cost to hire an attorney to prepare your bankruptcy petition and represent you at your hearings depends on the complexity of your case. Chapter 7 bankruptcies require less work than a Chapter13. Attorneys generally charge $1,000 to $2,500 to prepare a Chapter 7 bankruptcy petition and represent you at your 341 hearing. It cost $4,000 to hire an attorney to prepare a Chapter 13 bankruptcy petition and represent you at your required hearings.