It makes me laugh that people think that we pay tax before we have earnt it.
Me too!
For anyone thinking of starting up right from day one of starting, put away monies for tax, if anyone tells you that you don't pay tax in the first year of trading, they are wrong

Don't get into the mindset of payments are on 31st Jan and 31st July. These are dates are when the payment should be paid by, so you can make them at any time during that year