Users Feature Request: Users should be given a notice that a change they are making will affect tax calculations from a previous year. We should be able to lock in past tax year data/transactions if a user wants to Note: At the moment, changes made to a CoinTracker account (for example, editing transactions or changing cost basis methods) can affect past tax calculations. Related : Ultra users can set their cost basis method by year . As a user, what can I do? You can 🔼 upvote this feedback post to indicate you would like this feature added! The post status will be changed to Complete should we pursue this feature. Up-voters will be notified of the status change. I need additional assistance, who can I contact? For further assistance, please contact our support team directly . Thank you for your feedback and cooperation as we work to enhance your CoinTracker experience! Keywords: tax lots, transactions, lock, freeze, historical transactions