Apologies if this has already been said, I can't be arsed to read thru' all 21 pages here.
Second stamp duty is pretty penal as it is, and a lot of tax breaks have been reduced and even eliminated for landlords. CGT is charged on disposal and income tax is charged on the rental income. Essentially, by doing this the government is gently disincentivising residential property investment by private landlords. For what it's worth I wholeheartedly agree with this.
Harsh to penalise investors retrospectively when in the past BTLs have been encouraged by the government, but in this day and age with the property market being so overheated and difficult to get in to for first time buyers, new investments should be discouraged to help owner-occupiers.
I'm not sure an arbitrary 3 property tax is the way to go, i mean what if someone lets 2 mansions for £10k each per month, compared to 3 bedsits for £200 each. If I was the boss i'd levy top rate tax (45%) on all residential property income, with no reliefs. Some of this money would be used towards affordable housing initiatives and schemes to help the homeless. This wouldn't stop BTLs all together but would push investors away and into more productive schemes such as EISs and VCTs where fledgling industries can benefit
I don't want to slate private landlords, most are reputable and decent folk just trying to invest for the future, but overall the practice needs some strong disincentivising.