Mutual funds, closed-end funds and ETFs have a percentage of assets deducted periodically to cover the fund’s expenses.
With Portfolio Lab, you can keep track of the overall expense for the portfolio and rank funds by their expense ratio.

The overall portfolio expense is measured by the average expense ratio. This average is asset weighted, i.e. the fund with the highest position value in the portfolio have the most impact in the average expense ratio.
The estimated expenses is the estimated amount of annual expenses for all fund positions in the portfolio. As for other views in Portfolio Lab, you can take a snapshot of the chart or export the data to Excel.
 
The expense ratio for each fund is also displayed in the Asset Profile view: