Describe the problem:
so, use koinly for calculating tax , works perfect have all taxes up to 2022 done/koinly tax reports saved/ tax returns submitted to tax authorities, koinly gives me a detailed breakdown of my dates/times/local currency value and matches the notes I do (but they are not detailed enough) for tax returns
so keeping up to date, I synced my binance wallet this week to get the transactions for 2023 so far imported to keep an eye on figures, 2023 tax numbers are correct, now when I go back and check online the tax report for 2022, its showing now that I have way more tax to pay even though I have 2022 done and dusted with the right amounts paid and accounted for, I have the 2022 tax reports saved pdf but the online reports are now wrong
Which exchange/wallet is this regarding?
binance api sync
How did you import data into this wallet?
api
What have you tried to fix this so far?
so I did a full recalculate but its showing that same wrong figures
on one coin its lost the ability to carry the losses through 4-week rule and now the costings to that coin are wrong + the loss has disapperead, i think thats were the extra tax is coming from
Hi @Alan_Foster,
Thank you for shining a light on this issue! 
We really appreciate this and our apologies for these discrepancies. I’ve just checked our feedback portal to see if this has been reported prior to your mention (nothing showing at this time). Would you please connect with our support team so they can further investigate this issue?
We’re keen to dispel confusion and find a resolve quickly. We look forward to connecting with you, Alan!
Have a wonderful day!
@Alan_Foster Which cost-basis method are you using?
@Alan_Foster
Does the following apply? These are the wash sale rules which Koinly adheres to for that cost-basis method.
Part 1 When a person makes a disposal of shares within 4 weeks of a purchase of the same shares, the ordinary FIFO rules are ignored and the disposal is treated as if it was a disposal of the shares acquired within the previous 4 weeks, LIFO is used.If the disposal is greater than the number of shares, acquired in the last 4 weeks, FIFO is used for the additional shares disposed.Part 2
Where an individual makes a disposal of shares giving rise to a loss and repurchases shares of the same class within 4 weeks of the date of disposal, the loss arising on the initial disposal will not be available for relief against other gains. The loss will be restricted to future gains on the disposal of the shares repurchased.