If you are using HMRC’s online software for the joint Companies house submission and the HMRC tax return submission they both require a specific format. Their box numbers (fields) will combine some of your nominal accounts together as they have less field than you have of standard accounts (nominal numbers), so this is what I do to convert a standard P&L and Balance Sheet nomnals into the fields companies house and the HMRC’s tax returns fields (boxes).
Save Quickfiles P&L and Balance Sheet as csv’s and save them as xls spreadsheets.
On the P&L spreadsheet, to the right of the figures enter 1 new column named C/hs for companies house fields(box numbers) and another named C/tax for HMRC’s corp tax return fields(box numbers)
In these columns enter the box number of each companies house category against the coresponding P&L nominal acc number. You will find that quite a few of your separate nominals will have the same box number entered beside them which means they are added together and entered on the online software.
To find out which of your nominal accounts go into which field you need to read the companies house notes for that box.
The same applies for the balance sheet, an the 2nd column is for the 2nd part of the joint software which is for the HMRC’s C/tax return
I hope you can understand what I have wrote as this is a tricky subject to put into words.