We've looked at the Premier League finances, now it's time for the Football League Championship clubs' accounts to get the same treatment. Guardian analysis of the most recent accounts for the Championship clubs shows a combined net debt of almost £1bn.

Of the clubs in the Championship during 2012-13, only four made a profit, of £8.3m in total. The largest profit was recorded by Blackpool (£4.6m profit before tax) followed by Barnsley at £1.9m. Crystal Palace reported profits of 1.6m and Watford's accounts show a profit of £190,000.

Bolton Wanderers made the biggest loss at £50.6m before tax, followed by Blackburn Rovers at £36.5m. Leicester City, Wolverhampton Wanderers and Cardiff City all reported losses of more than £30m.

David Conn writes today:

The dire financial state of the Football League Championship has been revealed by a Guardian analysis of the 24 clubs' most recent accounts, which shows they owed a combined debt of almost £1bn.

The division's severe difficulties are caused principally by the financial chasm between the Championship and the Premier League, which means promotion, which will be claimed by either Derby County or Queens Park Rangers in Saturday's Wembley play-off final, is worth at least £120m.

Shaun Harvey, the Football League's chief executive, pointed out that means that the winner of Saturday’s match will receive the same from one season in the Premier League as “from playing in the Championship for the next 30 years

You can see the net debt by club in the Datawrapper chart below. Net debt is as stated in the annual accounts of each club; debts minus cash held at the bank.

The combined turnover of the 24 clubs in the Football League Championship amounts to almost £430m, the combined wage bill, in comparison comes in close to £460m. Bolton Wanderers had the biggest wage bill of all the clubs at £37.4m, followed by Blackburn Rovers who forked out almost £37m on wages for the year to June 30 2013.

If we look at wages as a proportion of turnover, Cardiff City and Bristol City are top of the list (190%). The chart below shows how the clubs compare by turnover, wage bill and wages as a proportion of turnover.

You can find the financial figures for 2012-13 for the 24 clubs in the downloadable spreadsheet below. The table below is an edited table of the full account details in the spreadsheet and only shows turnover, wage bill, wages as a proportion of turnover, loss before tax and profit before tax.

All data was researched and compiled by sports writer, David Conn from the most recently published annual reports at Companies House. The separate categories of turnover are rounded down or up, so added together do not always tally with the total turnover figure. Financial figures for 2012-13, for the 24 clubs which were in the Championship during 2012-13. Net debt is as stated in the accounts; debts minus cash held at the bank.

Download the data

DATA: download the full spreadsheet

More open data

Data journalism and data visualisations from the Guardian

Development and aid data

Search the world’s global development data with our gateway

Can you do more with this data?

• Contact us at data@theguardian.com
Follow us on Twitter
Like us on Facebook