sir1963:
How about businesses that expect their staff to wear black pants (no jeans/trackies etc), black shoes, etc. The business can deduct the cost of the tops as a business expense the workers can't, shall we take that deduction from businesses ?
Thank you for noticing that sometimes we treat things differently in the tax system. That is entirely my point. The absolutist consistency people demand when it comes to interest deductions on property investment is a fantasy.
Again, it doesn't exist and never has done. Investors just don't like this one because they feel their on the wrong side of it. I can't claim a portion of my mortgage for my salaried job that I do from a home office, but contractors can - and indeed, some property investors as well.
Sorry, but this sudden panic about consistency in the tax system needs to be seen as what it is - extremely convenient moralising at best, and cynical tantrum-throwing at worst.