Fixed Assets: Auto Calculate the Depreciation Rate from the Effective Life
At the moment Xero doesn't auto calculate the depreciation rate from the effective life. This means when we run the depreciation report the rate column shows up as blank if we've entered the effective life into the asset register rather than the rate. We should be able to enter the effective life and Xero auto calculates the depreciation rate for the depreciation report.

Thanks for sharing your needs for Fixed Assets, here. While we appreciate it could be confusing to see a blank percentage in the rate column, we want to upfront that this isn't something we have plans of implementing in the near term.
As you may already be across if this is something you do need to track, the best option right now would be to export the Depreciation Schedule report and make adjustments as required outside of Xero in Excel or Google sheets. I know this isn't the ideal solution and if any change is planned we'll let you know here.