You are expected to evaluate/examine (AO3) the role of taxation and other policies in reducing poverty and income and wealth inequalities (SL/HL)
Love them or hate them, taxes are one of the most effective ways to redistribute wealth by the government. There are 3 ways to classify taxes:
Progressive taxes: The more you earn, the higher of a percentage you will pay as taxes (for example 10% if you earn $10K, 30% if you earn $1M).
Regressive taxes: The more you earn, the lower of a percentage you will pay as taxes (for example 40% if you earn $10K, 10% if you earn $1M).
Proportional: Everyone pays the same tax rate (for example 20%).
The table below illustrates what these 3 types result in taxes.
Notice how the progressive system not only results in more overall taxes, but is also fairer for poorer people as less money is taken away from them?
This is why most countries have a progressive system, instead of a regressive, where the government makes less revenue, and disproportionately takes more money from people already struggling.
If you are an HL student, you are also expected to know what average and marginal tax rate means, and that can be read on the tax calculations page.
Direct taxes are imposed on income rather than expenditure (indirect). There are 3 types the syllabus want you to know:
Personal income taxes
Corporate income taxes
Wealth taxes: Taxes belongings such as houses or capital gains (when you cash out from stocks). This affects rich people more (because they own a lot).
Direct taxes are relatively fair ways to redistribute wealth, but overtaxing will lead to households and firms avoiding taxes, and disincentivize hard work.
Indirect taxes are imposed on expenditure, such as a tax on groceries. It can be effective as it is harder to avoid, and wealthier people may spend more, generating more tax revenue.
However, it will affect poor people more, as they will need the same amount of groceries as a rich person, thereby paying the same amount of tax, which is hard when you have little money to go by.
Reduce inequalities of opportunities/investment in human capital: Ensure everyone has the same access to education
Transfer payments: Give out money or other resources (food banks) to people that need it
Targeted spending on goods and services: The government could invest in education or healthcare to increase their quality, decreasing inequalities in opportunities and quality-of-life
Universal Basic Income (UBI): Give everyone a guaranteed monthly income. While this would eradicate poverty, it would raise inflation as everyone can afford things, and potentially increase government debt by a lot. It is therefore not implemented in any countries.
Policies to reduce discrimination: Make laws against discriminating and actively enforce these laws. However, it is sometimes hard to prove whether or not someone didn't get a job because of their race.
Minimum wages: Establish a minimum amount of money an employer has to pay people. This gets rid of very low-paying jobs, but will raise labor costs, decreasing Aggregate Supply.