DistroKid is unable to help with any tax issues, as we are not tax professionals.
You'll want to consult a tax professional for help with anything tax-reated, but here is some information that you might find useful:
You can find detailed information about all charges by going to More (top right on the upper menu bar) > Account Settings > Receipts.
You can also find details about all earnings under Bank > See Excruciating Detail.
You might also check out your PayPal account, or Bank Tab which shows your earnings. We pass along 100% of earnings from stores, minus banking fees/applicable taxes, to you.