She faces maximum sentence of three years in prison for each count of aiding and assisting in the preparation of a false return, a period of supervised release, restitution and monetary penalties.
Her tools for boosting refunds included false charitable deductions, unreimbursed employee expenses, education credits, medical and dental expenses and business expenses.
An El Cajon, Calif.-based tax preparer has pleaded guilty to preparing returns that cheated the Internal Revenue Service of more than $1.2 million.