Hi
Depends on the type of non profit legal structure you choose. Remember with any event you cannot spend exactly the amount brought in so there is often a shortfall or a surplus and its what for example happens to that surplus that is key to anyone organisation/individual who needs to monitor such organisations. So yes there are accounting responsibilities - even with the smallest unincorporated association (which might just consist of a few pals getting together, paying subs and using subs to further the groups aims) - all monies in and out MUST be accounted for (and in that event independent examination of the books is all that is required each year, but no report to HMRC for example). But other extreme is a Limited company, CIC, Provident society - these do have to be reported to HMRC. Charities obviously to the Charities Comm, over certain amounts, but must follow still follow all their other rules if reporting is not required.

Any group has to be formed by a constitution, when the legal structure is decided and thereafter what they choose governs their reporting responsibilities. They have to be fully open to scrutiny at any time #.

Anyone selling tickets for an event has a duty to the public it is selling to and must be able to prove that such an event did what it advertised it would do and did with any surplus what it promised to do # (so suggest this is built into the organisations rules). Care though - often such will be set up to claim its not a business, when reality it is actually such, or at the very least a on off way to get out of paying tax.

Sorry - bit rushed as due to go out. HTH