The number of calories to eat per day depends on the number of calories burned per day. For example, an adolescent boy requires far more of a calorie intake than an adult. This is because; young people burn more calories a day as their metabolism is high.
At the end of the tax year, you will get a form P60 which sets out the total amounts paid to you and deducted from you for the previous tax year. A tax year runs from 6 April one year to 5 April the following year.
If you use a fiscal year (a year ending on the last day of any month except December, or a 52-53-week year), your income tax return is due by the 15th day of the 4th month after the close of your fiscal year.