A Somerville woman who owned a tax preparation business for about six years was sentenced on Jan. 29 to 61 months in prison. She has been convicted of identity theft and tax fraud following a string of tax crimes. According to the District of Massachusetts United States Attorney's office, the woman prepared false tax returns on her behalf and the behalf of the clients of her Somerville business. In some instances, she used clients' identities without their consent or knowledge. She pleaded guilty to 32 counts, including charges for aggravated identity theft, filing false returns with the Internal Revenue Service and forging United States Treasury check endorsements.