how much tax will i pay?

Morning Guys,

I am confused what tax & NI i will pay this month...

my tax code for the year is 383L due to company benefits against my tax and last year I earned £27k putting me in the 20% code bracket.

This month I am due to be paid £4526.33 before tax, usually putting me in the 40% bracket obviously. However I do not (and nor do my company) expect to earn enough within the financial year to put me in the 40% bracket.

If anyone could tell me what I will get after tax this month and how it is worked out I would be eternally grateful.

Thanks in advance,

Lee