Offsetting means balancing money that you are owed with money that you owe.
When it comes to tax, it can mean a few things:
- subtracting a capital loss from a capital gain and paying less tax. For example, you had two shares, sold one for profit and one for a loss: you only pay Capital Gains Tax on the difference
- same for rental income if you have multiple properties
- you can also offset profits this year by bringing forward losses from the previous year – but only for the same type of income.