why is offsetting one years losses against another years profits even allowed?
In mind I have it that a company's accounts run from dd/mm/yyyy to dd/mm/yyyy+1 each year and aside from assets nothing should be carried over?
One reason may be because otherwise there is a strong disincentive to invest heavily.
Companies can't just plan on an annual, arbitary time frame if then want to succeed in an international market. Investments need to be consider over much long time frames 5,10 maybe 25+ years.
Let's say I own a factory and wish to install some new machinery to keep the factory competitive against my international competitors.
I can't do this piecemeal as its a modern linked production line so my only option is to spend many millions of pounds in one year to buy and install the modern machinery. The minimum period before this new machinery will break even is at least 5 years let's say.
Buying that machinery will mean my company will make a significant loss this financial year but will keep by business competitive and ensure that my employees stand a good chance of keeping thier jobs as otherwise my factory would become uncompetitive and loss making with the old equipment.
If I can't offset that investment over more than one year I, and other companies, have a significant disincentive when it comes to making large investments to grow and maintain our business's