Use the SA356 to appeal against a late submission penalty of a partnership tax return.
Use the SA356 to appeal against a penalty for late submission of a partnership tax return for the current and previous tax years. The form includes notes on what counts as legitimate grounds for appeal.
Self Assessment: penalty for a late tax return (SA355)
Use form SA355 to appeal against a penalty for late submission of your tax return for the 2009 to 2010 tax year and earlier tax years.