Originally posted by BlasterBates
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Do I Have To Pay Tax On My Online Gambling Winnings? | BingoPort
As for testing, I've worked on projects to implement commercial payments systems where payments might run into the many thousands or even millions. To test it properly, we used to make actual real payments in the live system but these were nominal amounts, so called 'live penny testing.' Live testing on a betting exchange might be more tricky as liquidity starts becoming affected with larger bet sizes, depending on the market.
I worked in the gambling sector many years ago and I recall a famous test case in the 1950s where HMRC's forerunner wanted to make betting winnings taxable. The defendant was a gambler called Alex Bird who used to bet over £2m p.a (nearly £100m in today's money.) He argued that his losses should also be tax deductible. HMRC lost the case as around 98% of bets are losers which would open the floodgates for the vast number of losing punters.
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