management accounts. Printing P&l and COA

Hi all, I’m returning to work from a career break.

The role I’m in has been left and not updated.

im trying to get an upto date P&L and COA.

its hard as the p& l does not equal nor does the other Reports.

how can I get it to equal or how can I check the following are correct.

revenues

P&L 

HMRC figures

before And after Taxes

Im still trying to get to grips with the reports and not having yr end since 2017 nor month ends.

I really am hoping to get the Business Owners the right figures and the whole system upto date.

I don’t know where to start.

How can I get firstly the Income reports for instance?