Loss certificate required
To claim the losses for tax purposes, you need a loss certificate from your bank or broker. This must be applied for by 15 December of the respective year at the latest.
Only with this certificate can you:
- declare losses in the tax return
- offset losses across different banks
Note on share losses
Losses from share sales may only be offset against profits from share sales (sect. 20 para. 6 of the Income Tax Act (EStG)). Offsetting against interest or fund gains is not permitted.