Our Flat Rate tax rebate service is a no win no fee. If you don’t get any tax back, you don’t pay us anything. If you do receive a tax rebate, we charge the higher of our admin fee £40 (+VAT) or 40% of the rebate value (+VAT). If your repayment is less than £40 (+VAT), Vortex Accountants will keep the repayment as the chargeable fee and will not invoice you for anything further.