The new measure, created to tackle the obesity crisis, will apply a levy of 18p a litre to drinks with more than 5g of sugar per 100ml and 24p for those containing more than 8g per 100ml.
Backed by a mountain of scientific evidence, the World Health Organization says that society needs to curb its consumption of sugar to fight the upcoming obesity pandemic - and this is where the sugar tax comes in.
Meanwhile, 51pc confessed they aren't aware of how much sugar they should be consuming each day. And how much sugar is in the most popular drinks? For example, the price of a 1.75-litre bottle of supermarket cola could increase by 25%. They cost in the region of 70p. Its 250ml cans, which usually retail for around the £1.20 mark, will now cost 6p more. "This new tax gives fraudsters an opportunity to move into another commodity".
Why is the sugar tax imposed? Top-selling brands such as Fanta, Ribena and Lucozade have cut down the sugar content to avoid the tax already.
What is the sugar tax?
The tax was first announced in the 2016 budget but has only just come into force, along with minimum pricing rules for alcohol in Scotland next month.
Debate has raged about how effective the levy will be, especially in relation to obesity rates - something which the Government has consistently cited as the main reason for the tax.
TAXES ON UNHEALTHY goods can reduce the level of consumption for people in lower socio-economic groups, a new report has found. We're delighted that the soft drinks industry have risen to the challenge and taken tonnes of sugar out of their products.
Tesco, Co-op, and Asda have all opted to do this - although they will still be stocking branded soft-drinks, which may still carry the levy. With the tax mostly on all the fizzy drinks, the pure fruit juices and milkshakes based drinks will comparatively sell higher as these do not have added sugar. This could also increase their prices in pubs and restaurants too.
Will it apply to all drinks? Irn-Bru now has four teaspoons of sugar in a can compared to the 8.5 teaspoons previously.
The amount each brand goes up by depends on the amount of sugar in the drink.
It's the government's response to childhood obesity, and proceeds from the tax will be used to fund healthy school breakfast clubs as well as school sports.
But dentists are calling for a portion of the estimated £280 million it will generate in 2018/19 to be spent on promoting oral health.
A Coca-Cola Great Britain spokeswoman explained their decision to WalesOnline.
But more than 50% of manufacturers have changed their formulas to cut sugar, according to figures last month from the Treasury. It is the most common reason for children aged 5 to 9 to be admitted to hospital, causing 60,000 missed days of school each year.
But the tax will solve neither obesity nor tooth decay and PHE is urging parents to change their children's eating and drinking habits.
Experts say cutting down on sugar would drive down obesity and slash hospital admissions.