Renewal Premiums 24th February 2017 Tax Investigation Insurance: Premiums for 2017-18 policy year. Prices unchanged from the previous year: Limited companies with turnover >£20m POA Limited companies with turnover £10m to £20m £540 Limited companies with turnover < £10m £185 Partnerships and LLP’s £155 Sole traders £100 Private clients £40 Our tax investigation insurance business is administered from our Bury St Edmunds office (Contact: Jill Holt). full details. Related Services Tax Investigation Insurance Business Tax Private Client Tax