Your paperwork.
WHAT YOU RECEIVE
An invoice for each purchase A record for each sale, showing the breakdown
WHERE TO FIND THEM
Your marketplace dashboard.
WHAT THEY SHOW
The name The price Commission, for sellers Tax, where it applies The net figure
WHY TO KEEP THEM
Your own accounts Tax records Evidence of what you own and what you paid
THAT LAST POINT
An invoice is evidence of purchase if ownership is ever questioned.
WHAT TO DO WITH THEM
Download and store them with your business records.
WHAT NOT TO DO
Rely on them remaining accessible indefinitely.
Keep your own copies.
WHAT ELSE TO RECORD
What you paid, what you sold for, and what you spent on renewals.
That is what tells you whether your domain activity is profitable.
WHAT TO GIVE YOUR ACCOUNTANT
All of it, organised by period.