Rookie ... the first thing you need to understand is that income trusts do not pay dividends ... they issue distributions ... there is a difference ... occasionally, there is a tiny amount of dividend included in a distribution, but the key word there is “tiny” ... in most cases, distributions are composed of some combination of income, capital gain, and return of capital ... each of those components is taxed differently.
The ROC portion you seem to have down ... the examples you posted are correct ... of course, if you didn’t sell 1 year later, then those amounts wouldn’t become taxable until some time in the future when you actually do sell.
The capital gain portion of the distribution is taxed exactly the same as any other realized capital gain ... half the gain is added to your income, and that half is taxed as ordinary income ... a capital gain distribution has no effect on your adjusted cost base ... there is no capital gain distribution in the example you are citing.
The income portion of the distribution is NOT taxed at your marginal rate ... it is taxed as ordinary income ... there is a difference ... there could actually be several sub-categories of income distribution that are all treated the same, taxwise ... domestic business income, domestic royalty income, interest income, foreign non-business income, foreign business income, etc., are all taxed the same way ... as ordinary income.
Sometimes, if there was any foreign income, there may also be a foreign tax withheld from the trust ... in that case, the foreign tax withholdings would also show up on your T-slip, and those can be entered as credits on your tax return.
Cdn dividends are in a whole separate category, tax-wise, but you generally won’t have to worry about that with income trusts, since so few of them distribute any dividends at all, and when they do, it is usually just a tiny, tiny fraction of the total ... there are no dividends in the example you are citing.
So in your example, the 97% that is income would simply be taxed as ordinary income. That's all there is to it.