Copy rows from master sheet to other sheets based on criteria

Hi,

It's been many years since I did any significant work using Excel and I seem to have forgotten everything despite at one point being able to create quite detailed macros. Now I'm struggling even with formulas!

I have set up a workbook with a master sheet called Transactions. This is effectively a continuous bank statement so a transaction is entered with date, description etc. and a value is placed in either the income or expenditure column. What I would like to be able to do is that every time I enter a transaction a copy of that transaction row is either put on an Income sheet or Expenditure sheet depending which it is rather than having to enter it manually twice.

I'm sure this is possible but I can't quite work out how so I was wondering if anybody here would be able to give me some assistance please?

I'm using Excel 2011 for Mac.

Many thanks.