The OPTI method lets you choose between two calculation approaches depending on how long-term trades are taxed in your country. You can configure this preference directly in the tax report settings.
Option 1: Long-term trades are completely tax-free (e.g., Germany)
In this case, the OPTI method calculates the lowest possible tax result by prioritizing taxable and tax-free transactions as shown below:
Option 2: Long-term trades taxed at a reduced rate (e.g., USA)
Here, the method calculates results by factoring in the reduced tax rate and optimizes accordingly:
Explanation of Sorting by Cost Basis
Short losses, Short gains, Long losses, Long gains → refer to transaction categories.
Ascending means sorting from the smallest cost basis to the largest, while descending means the reverse.
Important Notes
If the OPTI method was used before July 30, 2025, you must generate a new reallocation report before using it again.
The update on July 30, 2025, introduced changes regarding tax-free transactions, which makes this step necessary.
For detailed assistance, see: Navigating through the reallocation report.
Legacy OPTI Method
For reporting purposes, you can switch to the legacy OPTI calculation:
Enable it using this link: Legacy setting on.
The option appears only if OPTI is selected as the method.
Once enabled, you will see an extra option in your settings.
Next, select the date until when the legacy calculation should be applied. All trades before this date will use the old calculation method, helping you replicate earlier results.
After finishing your calculations, deactivate the legacy setting via the same link: Legacy setting off.
The legacy calculation can be used for traceability of previously created reports but should no longer be applied for official reports.