I've cross checked the OECD numbers many times, and they are very precise. Any discrepancy tend to be year to year changes in deductions etc.

> Oh: A source of great injustice in Sweden is that renters (predominantly low income earners) don't deduct interest rate expenses of those who own property (their landlords) while those who own their property deduct a crapload of interest

This is interesting. Norway has that for a long time as well, and I believe the US allows it, but very few other countries in the world does and didn't realise Sweden also allowed it. Norway allows deductions of all debt interest, which makes it one of the most extreme examples of this, and is one of the big confounding factors when people look at tax rates without taking into account that e.g. even credit card interest paid gives a deduction towards taxable income...

In Norway at least I believe it's largely been seen as an incentive to reward home ownership, and making the average worker a home owner has been as one of the big goals of the labour movement, to the extent that any growth in proportion of population renting has come to be seen as a sign of collective failure.