After a bit of a shocking budget in our country where the middle class got truly clobbered it got me thinking about progressive income tax, and thought it would make a good topic for debate.
In the UK progressive income tax has existed as long as I've been alive, and it now is accepted without question. It works as follows - beneath a certain level (currently ~£12.5k p/a) no tax at is all is taken, and then between this level and ~£50k p/a ( an above average, but by no means affluent income) tax is levied at 20%, above this level up to 125k (a good income in the UK) tax is then levied at 40%, and finally above this level it is 45%. On top of all of these is National insurance which is an additional ~12% tax on income*.
The government's latest trick to help fill the fiscal black hole caused by the Ukraine war, is to freeze the levels at which these taxes kick in so that inflation pushes more people into taxation, middle earners into the 40% band, and moderately high earners into the 45% band.
There is worse too - between £50k and £60k child benefit, a previously universal benefit is withdrawn meaning the marginal tax rate between these bands is very high indeed, and people whose income might fall into this region do things like working reduced hours or put money into a pension to reduce their income.
My contention is that progressive taxation is a bad policy, and that a flat tax would be both a fairer and more pragmatic option.
My issues with progressive taxation are as follows :
1) It is a disincentive to work. People who could earn a little more money, but at the risk of stepping into a higher tax bracket , by working more hours or taking a better job will be less motivated to do this because they will see only a fraction of the benefit. This is clearly bad both on a personal level, but even more so for the economy. We should want our best people to be maximising their added value.
2) It's unfair. Most people can reasonably agree that those with the broadest shoulders pay the most, but this already occurs with a flat tax - the more you earn, the more you pay. When you go beyond this and ask people on higher incomes to pay a higher share of their income too, it instead looks like punishment, a sort of 'sin' tax on something we should consider laudable.
3) Linked to the previous point, the perceived unfairness and economic reality of high tax rates encourages people on higher incomes to seek ways to avoid tax in a variety of ways, most of which harm the economy, and some meaning less revenue is received than if a lower flax tax was instead in place.
4) It penalises traditional family structures, where one parent works in a demanding but high paying job , while the spouse puts their career on hold to look after children and consequently earns much less. Instead the system encourages both parents are encouraged to work, putting kids in childcare, with all the disadvantages this approach entails.
There are a few benefits of a progressive tax system, one being that it better recognises that unavoidable basic costs (like food, energy etc) also scale inversely with income, and thus in theory being better able to tax truly 'disposible' income. Overall though, I think a flat tax system is far superior, even if I don't see the UK going in this direction any time soon.
* this one is capped