What is the tax liability that is showing on my account?

This is highlighting your estimated PIE tax liability if you were to sell all your multi-rate PIE holdings today. P

IE tax is paid in two instances – when you sell units during the year, or at the end of the tax year (March 31st).

Each PIE Fund attributes its income/loss from its investments, expenses and tax credits across each day in the year. The net taxable income and tax credits are divided up among all of the units of the fund, and a share of the income and credits is attributed to everyone investing in the fund. PIE tax is then calculated based on each investors PIR. This is why it will increase each day.