If you are talking about contribution of investment in ASSOCIATES to Investor’s net income” you are spot on. Yes you take your share of income from associates and multiple by 1- tax rate. However in most cases the questions are worded as follows “what is the income from associates in XX income statement for year ended …” in which case we should just work out the contribution to income (ignoring taxes) but its pretty clear you need to include taxes if they ask for contribution from associates to equity. The same should be applied for any questions on contribution to net income or equity whether its amortisation of assets, inventory, pensions etc…ALWAYS NET OF TAXES!. To illustrate my answer see example here.
Lets say our share of Associate net assets at begging of the year is $100. And our share of income this year is $20 and tax rate is 30%. We also assume no other assets of liabilities, the balance sheets last year and this year is as follows:
No, the Associate’s net income is already net of tax. You’re taxing the associate’s net income at the corporate level twice if you do that, on net income that the investor didn’t even actually receive in the form of cash.
Gents & ladies, most corporation tax, certainly here in UK is not cash based. A company is taxed on total income from its worldwide operations including associates income. However in most jurisdictions tax suffered at subsidiary level or overseas operations, associates etc can be netted off as a tax credit under double taxation only if there is a double tax agreement or allowed the law.
Anyway this is certainly beyond the scope of this discussion.