The level of taxation
Pigouvian taxes in action
Standard economic theory says that if consuming goods or
services causes harm, a tax should be applied to them until
the value of the tax matches the cost of the harm done –
for example, a tax on sugar should match the cost to public
health services of obesity. This is a “Pigouvian tax”, named
after Arthur Pigou, the economist who proposed the idea.
How it works
Governments can impose taxes on a person’s earnings,
their buildings and homes, savings and investments,
pensions, inherited property, or on what they spend.
Most governments rely heavily on income taxes,
usually with different proportionate levels for different
levels of earnings. This makes the tax system fairer;
however, introducing more complexity also increases
the chances of tax avoidance. Some taxes are also
levied in order to change behaviour. By taxing
something viewed as negative or unhealthy, such
as tobacco or alcohol, the government can help to
persuade people to consume less of those things.
It is difficult for governments to establish how much tax to levy. Too
low and the government cannot provide the services people want.
Too high and people will be unwilling to pay the tax.
Drinks with over 8g of sugar
per 100ml are taxed at 8p per
can/carton – or 24p per litre.
Drinks with 5-8g of sugar per
100ml are taxed at 6p per can/
carton – or 18p per litre.
Milk- and fruit-based drinks,
teas, and coffees are not taxed,
regardless of sugar content.
Carib
Ginger
Ale
No
Bull
Sug
Nite
Fiasco Peppy Bro
Uvena
Dextrozade
- 2g
10.3g
11g
10.6g 10.6g
Dr
Jones Orango
Cafteen
Sea
Mist
Honesto
smoothie
Juniper
juice
Lifta
Schmoozer
6.3g 6.5g
- 5 g
11g
13.6g
6.6g
5.1g
10.6g
9.9g
11g
Chocolate
milk
Smooch Skydosh Monkey
Frothacino Chai latte
9.3g
13.7g 13. 8g
£££
❯❯Effective tax rate Many tax systems allow different
“reliefs” – such as investment relief to encourage
investment. More than one tax may also be levied at
once, for example income and corporation tax. As a
result, the effective (average) tax rate may differ from
the headline (basic) rate.
❯❯Marginal tax rate Describes the additional tax paid for
undertaking a small amount of extra activity – for
example the extra tax paid in earning £1 more. Decisions
made “at the margin” influence the behaviour of
individuals and businesses, such as whether it is worth
working longer hours.
❯❯Grey economy People who work for cash wages or
fees and do not declare their income, in order to avoid
paying tax.
NEED TO KNOW
126-127_Setting_Taxation_levels.indd 126 13/10/2016 15:36