Gill Tallon

Gill Tallon is a member of the Chartered Institute of Taxation and is a highly experienced private client specialist. Additionally, Gill is a Director and shareholder of Mercer & Hole Trustees Ltd, the firm’s Trust Corporation and heads up Mercer & Hole’s Financial Planning team.

Gill’s has acted for individuals, their families and their trusts, some of whom she has known for many years. She acts as a trustee and advises on all aspects of personal financial planning, particularly involving trust and estate tax planning strategies. She also takes a special interest in acting for non-domiciled individuals and offshore trusts.

Gill has acted as an Expert Witness, including for a high profile case regarding judicial pensions, where tax consequences of the application of the lifetime and annual allowances were relevant. In addition, Gill has supported divorce lawyers with reports commenting on domicile and capital gains tax issues with proposed solutions to minimise the taxation on a split of assets on divorce.

Gill’s career in taxation began in 1979, when she joined the Inland Revenue. She then went on to work as a Manager for Binder Hamlyn, specialising in the private client and trust field, and then as a Worldwide Manager for Andersens when the two firms merged in 1994. In 1998 she joined Mercer & Hole where part of the private client work of Andersens was transferred. Gill was a Partner at Mercer & Hole from 1999 until October 2025.

Outside of work, Gill enjoys having fun with friends. She likes to spend time with her daughters and going to music concerts, with a bit of dancing if she can.