Ebay don't have a tax year.
Can you explain what you want to know and why?
If you want to know about Ebay reporting your sales to HMRC, for example, it is 30 items or about £1700 over a calendar year, January to December.
"There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true.”
Søren Kierkegaard, Danish philosopher (1813 - 1855)
