"Has CRA had any training in how the whole eBay thing works ?"
They may have got some training from me!
😞
When my 2004 and 2005 GST/HST and income tax returns were audited last year, the auditor explained they had little knowledge about eBay/PayPal. They were looking for an education which explained why so much time was spent on my audit (it lasted six months).
When asked why so much time was spent on that file with little chance of re-assessment, the auditor explained it was a learning experience for herself and her local manager.
On the other hand, from an income tax point-of-view, the point of sale (eBay, other online venue or brick and mortar store) does not really change how the bookkeeping must be done, how files must be maintained and available when requested.
From an tax audit viewpoint, they are trying to find where money could have gone missing and unreported. They were concerned with the ability to withdraw from PayPal without reporting. After having gone through every single PayPal transactions in my account for several months, they have a better understanding of the system.
The basics are always the same: a merchant adds his sales, substract his cost of goods and business related expenses and report the net profit (sales minus cost minus expenses) as a business income on his tax return.
Ar the end of the day, a taxpayer better not try to file yearly net income of only $20,000 when spending $40,000 a year after year to live on.
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